./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi010.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/rfi010.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/rfi010.i ./goblint.2024-05-21_14-57-05.files/protection/rfi010.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 12:47:12,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:47:12,854 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:47:12,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:47:12,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:47:12,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:47:12,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:47:12,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:47:12,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:47:12,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:47:12,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:47:12,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:47:12,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:47:12,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:47:12,885 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:47:12,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:47:12,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:47:12,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:47:12,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:47:12,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:47:12,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:47:12,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:47:12,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:47:12,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:47:12,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:47:12,887 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:47:12,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:47:12,888 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:47:12,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:47:12,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:47:12,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:47:12,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:47:12,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:47:12,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:47:12,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:47:12,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:47:12,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:47:12,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:47:12,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:47:12,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:47:12,890 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:47:12,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:47:12,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:47:12,890 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:47:13,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:47:13,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:47:13,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:47:13,104 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:47:13,104 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:47:13,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-14 12:47:14,042 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:47:14,256 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:47:14,256 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-14 12:47:14,275 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e928a4ac/827437c22e9c4db4a480184653cc4627/FLAG72595a990 [2024-06-14 12:47:14,285 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e928a4ac/827437c22e9c4db4a480184653cc4627 [2024-06-14 12:47:14,287 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:47:14,287 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:47:14,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi010.yml/witness.yml [2024-06-14 12:47:14,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:47:14,430 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:47:14,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:47:14,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:47:14,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:47:14,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:47:14" (1/2) ... [2024-06-14 12:47:14,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a09c348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:47:14, skipping insertion in model container [2024-06-14 12:47:14,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:47:14" (1/2) ... [2024-06-14 12:47:14,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@778bd8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:47:14, skipping insertion in model container [2024-06-14 12:47:14,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:47:14" (2/2) ... [2024-06-14 12:47:14,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a09c348 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:14, skipping insertion in model container [2024-06-14 12:47:14,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:47:14" (2/2) ... [2024-06-14 12:47:14,440 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:47:14,494 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:47:14,495 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 12:47:14,495 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] (((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 12:47:14,495 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:47:14,495 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-14 12:47:14,531 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:47:14,869 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:47:14,878 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:47:14,972 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:47:15,006 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:47:15,006 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15 WrapperNode [2024-06-14 12:47:15,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:47:15,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:47:15,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:47:15,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:47:15,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,049 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-14 12:47:15,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:47:15,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:47:15,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:47:15,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:47:15,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,061 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,072 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 12:47:15,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:47:15,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:47:15,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:47:15,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:47:15,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (1/1) ... [2024-06-14 12:47:15,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:47:15,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:47:15,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 12:47:15,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 12:47:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:47:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:47:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:47:15,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:47:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:47:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:47:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:47:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:47:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:47:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:47:15,144 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:47:15,275 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:47:15,277 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:47:15,625 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:47:15,625 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:47:15,768 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:47:15,768 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:47:15,770 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:47:15 BoogieIcfgContainer [2024-06-14 12:47:15,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:47:15,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:47:15,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:47:15,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:47:15,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:47:14" (1/4) ... [2024-06-14 12:47:15,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cfbff01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:47:15, skipping insertion in model container [2024-06-14 12:47:15,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:47:14" (2/4) ... [2024-06-14 12:47:15,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cfbff01 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:47:15, skipping insertion in model container [2024-06-14 12:47:15,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:47:15" (3/4) ... [2024-06-14 12:47:15,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cfbff01 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:47:15, skipping insertion in model container [2024-06-14 12:47:15,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:47:15" (4/4) ... [2024-06-14 12:47:15,781 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi010.i [2024-06-14 12:47:15,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:47:15,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:47:15,795 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:47:15,829 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:47:15,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:47:15,881 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 12:47:15,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:47:15,883 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 42 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:47:15,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:47:15,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 12:47:15,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:47:15,903 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;@327872e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:47:15,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:47:15,908 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:47:15,908 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:47:15,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:47:15,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:15,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:47:15,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:15,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1790250860, now seen corresponding path program 1 times [2024-06-14 12:47:15,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:15,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493573867] [2024-06-14 12:47:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:15,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:16,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:16,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493573867] [2024-06-14 12:47:16,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493573867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:16,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:16,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:47:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969083929] [2024-06-14 12:47:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:16,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:47:16,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:47:16,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:47:16,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-14 12:47:16,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:16,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:16,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-14 12:47:16,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:16,780 INFO L124 PetriNetUnfolderBase]: 131/262 cut-off events. [2024-06-14 12:47:16,780 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 12:47:16,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 262 events. 131/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1035 event pairs, 75 based on Foata normal form. 1/251 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-14 12:47:16,785 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 22 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 12:47:16,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 119 flow [2024-06-14 12:47:16,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:47:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:47:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-06-14 12:47:16,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-14 12:47:16,794 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 57 transitions. [2024-06-14 12:47:16,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 119 flow [2024-06-14 12:47:16,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:47:16,797 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 12:47:16,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 12:47:16,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 12:47:16,801 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 12:47:16,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:16,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:16,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:16,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:47:16,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:16,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:16,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1850839667, now seen corresponding path program 1 times [2024-06-14 12:47:16,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:16,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436180447] [2024-06-14 12:47:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:16,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:17,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436180447] [2024-06-14 12:47:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436180447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:17,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:17,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:47:17,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777682547] [2024-06-14 12:47:17,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:17,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:47:17,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:47:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:47:17,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:47:17,315 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 12:47:17,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:17,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:47:17,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:17,418 INFO L124 PetriNetUnfolderBase]: 147/281 cut-off events. [2024-06-14 12:47:17,418 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-14 12:47:17,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 281 events. 147/281 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1054 event pairs, 59 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 628. Up to 244 conditions per place. [2024-06-14 12:47:17,422 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-14 12:47:17,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 167 flow [2024-06-14 12:47:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:47:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:47:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-06-14 12:47:17,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-14 12:47:17,426 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 71 transitions. [2024-06-14 12:47:17,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 167 flow [2024-06-14 12:47:17,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:47:17,430 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 12:47:17,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-14 12:47:17,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 12:47:17,430 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 12:47:17,431 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 12:47:17,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:17,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:17,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:47:17,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:17,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash -956028385, now seen corresponding path program 1 times [2024-06-14 12:47:17,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:17,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284183140] [2024-06-14 12:47:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:18,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284183140] [2024-06-14 12:47:18,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284183140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:18,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:18,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:47:18,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689288792] [2024-06-14 12:47:18,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:18,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:47:18,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:18,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:47:18,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:47:18,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:47:18,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:18,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:18,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:47:18,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:18,232 INFO L124 PetriNetUnfolderBase]: 123/247 cut-off events. [2024-06-14 12:47:18,232 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-06-14 12:47:18,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 247 events. 123/247 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 933 event pairs, 62 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 611. Up to 219 conditions per place. [2024-06-14 12:47:18,233 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 24 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-14 12:47:18,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 175 flow [2024-06-14 12:47:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:47:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:47:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-14 12:47:18,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-14 12:47:18,235 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 74 transitions. [2024-06-14 12:47:18,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 175 flow [2024-06-14 12:47:18,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 166 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:47:18,236 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-14 12:47:18,236 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-14 12:47:18,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-14 12:47:18,237 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-14 12:47:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:18,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:18,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:18,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:47:18,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:18,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2044248265, now seen corresponding path program 1 times [2024-06-14 12:47:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:18,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824575426] [2024-06-14 12:47:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:18,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:19,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824575426] [2024-06-14 12:47:19,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824575426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:19,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:19,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:47:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107642690] [2024-06-14 12:47:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:19,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:47:19,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:19,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:47:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:47:19,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:47:19,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:19,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:19,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:47:19,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:19,406 INFO L124 PetriNetUnfolderBase]: 141/270 cut-off events. [2024-06-14 12:47:19,406 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-06-14 12:47:19,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 270 events. 141/270 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 994 event pairs, 24 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 723. Up to 215 conditions per place. [2024-06-14 12:47:19,407 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-14 12:47:19,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 231 flow [2024-06-14 12:47:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:47:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:47:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-14 12:47:19,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-14 12:47:19,411 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 95 transitions. [2024-06-14 12:47:19,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 231 flow [2024-06-14 12:47:19,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 220 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:47:19,414 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-14 12:47:19,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-14 12:47:19,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-14 12:47:19,415 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-14 12:47:19,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:19,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:19,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:19,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:47:19,415 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 12:47:19,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:19,416 INFO L85 PathProgramCache]: Analyzing trace with hash 427891856, now seen corresponding path program 1 times [2024-06-14 12:47:19,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:19,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143701064] [2024-06-14 12:47:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:19,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:20,075 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 12:47:20,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:20,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143701064] [2024-06-14 12:47:20,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143701064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:20,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:20,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:47:20,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409903831] [2024-06-14 12:47:20,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:20,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:47:20,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:47:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:47:20,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:47:20,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:20,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:20,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:47:20,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:20,252 INFO L124 PetriNetUnfolderBase]: 115/237 cut-off events. [2024-06-14 12:47:20,253 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-06-14 12:47:20,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 237 events. 115/237 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 882 event pairs, 32 based on Foata normal form. 2/238 useless extension candidates. Maximal degree in co-relation 675. Up to 199 conditions per place. [2024-06-14 12:47:20,254 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 27 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-14 12:47:20,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 223 flow [2024-06-14 12:47:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:47:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:47:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-14 12:47:20,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-14 12:47:20,256 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 86 transitions. [2024-06-14 12:47:20,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 223 flow [2024-06-14 12:47:20,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 207 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:47:20,258 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-14 12:47:20,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-14 12:47:20,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-14 12:47:20,259 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-14 12:47:20,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:20,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:20,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:20,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:47:20,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:20,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash 841772222, now seen corresponding path program 1 times [2024-06-14 12:47:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:20,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945595356] [2024-06-14 12:47:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:20,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:20,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945595356] [2024-06-14 12:47:20,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945595356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:20,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:20,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:47:20,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216289284] [2024-06-14 12:47:20,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:20,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:47:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:47:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:47:20,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:20,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:20,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:20,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:20,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:20,916 INFO L124 PetriNetUnfolderBase]: 141/275 cut-off events. [2024-06-14 12:47:20,916 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-14 12:47:20,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 275 events. 141/275 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1032 event pairs, 38 based on Foata normal form. 2/276 useless extension candidates. Maximal degree in co-relation 839. Up to 237 conditions per place. [2024-06-14 12:47:20,918 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-14 12:47:20,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 262 flow [2024-06-14 12:47:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:47:20,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:47:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-14 12:47:20,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-14 12:47:20,919 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 84 transitions. [2024-06-14 12:47:20,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 262 flow [2024-06-14 12:47:20,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 245 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:47:20,921 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 162 flow [2024-06-14 12:47:20,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-14 12:47:20,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-14 12:47:20,921 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 162 flow [2024-06-14 12:47:20,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:20,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:20,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:20,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:47:20,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:20,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash 379737470, now seen corresponding path program 2 times [2024-06-14 12:47:20,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:20,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168302360] [2024-06-14 12:47:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:21,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:21,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168302360] [2024-06-14 12:47:21,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168302360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:21,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:21,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:47:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55383428] [2024-06-14 12:47:21,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:21,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:47:21,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:21,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:47:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:47:21,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:21,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:21,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:21,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:21,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:21,564 INFO L124 PetriNetUnfolderBase]: 142/276 cut-off events. [2024-06-14 12:47:21,564 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-06-14 12:47:21,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 276 events. 142/276 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1033 event pairs, 42 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 894. Up to 230 conditions per place. [2024-06-14 12:47:21,566 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 30 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-14 12:47:21,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 278 flow [2024-06-14 12:47:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:47:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:47:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-14 12:47:21,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-14 12:47:21,567 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 162 flow. Second operand 6 states and 84 transitions. [2024-06-14 12:47:21,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 278 flow [2024-06-14 12:47:21,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 261 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:47:21,569 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 188 flow [2024-06-14 12:47:21,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-14 12:47:21,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 12:47:21,571 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 188 flow [2024-06-14 12:47:21,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:21,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:21,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:21,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:47:21,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:21,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1014541167, now seen corresponding path program 1 times [2024-06-14 12:47:21,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:21,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031662783] [2024-06-14 12:47:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:21,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:22,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:22,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031662783] [2024-06-14 12:47:22,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031662783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:22,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:22,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:47:22,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915638870] [2024-06-14 12:47:22,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:22,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:47:22,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:47:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:47:22,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:22,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 188 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:22,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:22,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:22,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:22,439 INFO L124 PetriNetUnfolderBase]: 158/309 cut-off events. [2024-06-14 12:47:22,439 INFO L125 PetriNetUnfolderBase]: For 917/917 co-relation queries the response was YES. [2024-06-14 12:47:22,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 309 events. 158/309 cut-off events. For 917/917 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1222 event pairs, 38 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 1054. Up to 258 conditions per place. [2024-06-14 12:47:22,441 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 39 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2024-06-14 12:47:22,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 370 flow [2024-06-14 12:47:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 12:47:22,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 12:47:22,443 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 188 flow. Second operand 8 states and 108 transitions. [2024-06-14 12:47:22,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 370 flow [2024-06-14 12:47:22,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 335 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:47:22,445 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 250 flow [2024-06-14 12:47:22,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=250, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-14 12:47:22,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-14 12:47:22,446 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 250 flow [2024-06-14 12:47:22,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:22,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:22,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:22,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:47:22,446 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:22,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash 325135825, now seen corresponding path program 2 times [2024-06-14 12:47:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907745477] [2024-06-14 12:47:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:22,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:23,176 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 12:47:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907745477] [2024-06-14 12:47:23,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907745477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:23,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:23,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:47:23,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69217766] [2024-06-14 12:47:23,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:23,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:47:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:23,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:47:23,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:47:23,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:23,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:23,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:23,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:23,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:23,404 INFO L124 PetriNetUnfolderBase]: 164/319 cut-off events. [2024-06-14 12:47:23,404 INFO L125 PetriNetUnfolderBase]: For 1191/1191 co-relation queries the response was YES. [2024-06-14 12:47:23,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 319 events. 164/319 cut-off events. For 1191/1191 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1264 event pairs, 37 based on Foata normal form. 2/320 useless extension candidates. Maximal degree in co-relation 1188. Up to 256 conditions per place. [2024-06-14 12:47:23,406 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 36 selfloop transitions, 18 changer transitions 0/58 dead transitions. [2024-06-14 12:47:23,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 408 flow [2024-06-14 12:47:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:47:23,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:47:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 12:47:23,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:47:23,407 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 250 flow. Second operand 7 states and 96 transitions. [2024-06-14 12:47:23,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 408 flow [2024-06-14 12:47:23,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 381 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:47:23,409 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 295 flow [2024-06-14 12:47:23,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-06-14 12:47:23,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-14 12:47:23,410 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 295 flow [2024-06-14 12:47:23,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:23,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:23,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:23,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:47:23,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:23,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:23,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1113039599, now seen corresponding path program 3 times [2024-06-14 12:47:23,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:23,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940924745] [2024-06-14 12:47:23,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:23,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:24,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:24,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940924745] [2024-06-14 12:47:24,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940924745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:24,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:24,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:47:24,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477508582] [2024-06-14 12:47:24,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:24,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:47:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:24,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:47:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:47:24,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:24,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 295 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:24,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:24,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:24,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:24,337 INFO L124 PetriNetUnfolderBase]: 170/329 cut-off events. [2024-06-14 12:47:24,337 INFO L125 PetriNetUnfolderBase]: For 1556/1556 co-relation queries the response was YES. [2024-06-14 12:47:24,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 329 events. 170/329 cut-off events. For 1556/1556 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1307 event pairs, 40 based on Foata normal form. 2/327 useless extension candidates. Maximal degree in co-relation 1338. Up to 263 conditions per place. [2024-06-14 12:47:24,339 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 18 changer transitions 0/60 dead transitions. [2024-06-14 12:47:24,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 467 flow [2024-06-14 12:47:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:47:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:47:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 12:47:24,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:47:24,340 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 295 flow. Second operand 7 states and 96 transitions. [2024-06-14 12:47:24,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 467 flow [2024-06-14 12:47:24,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 413 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 12:47:24,342 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 319 flow [2024-06-14 12:47:24,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-14 12:47:24,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-14 12:47:24,343 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 319 flow [2024-06-14 12:47:24,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:24,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:24,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:24,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:47:24,343 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:24,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:24,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1112772689, now seen corresponding path program 4 times [2024-06-14 12:47:24,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:24,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754525496] [2024-06-14 12:47:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:24,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:25,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:25,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754525496] [2024-06-14 12:47:25,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754525496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:25,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:25,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:47:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507395130] [2024-06-14 12:47:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:25,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:47:25,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:47:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:47:25,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:25,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:25,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:25,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:25,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:25,212 INFO L124 PetriNetUnfolderBase]: 168/326 cut-off events. [2024-06-14 12:47:25,212 INFO L125 PetriNetUnfolderBase]: For 1472/1472 co-relation queries the response was YES. [2024-06-14 12:47:25,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 326 events. 168/326 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1320 event pairs, 40 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 1315. Up to 242 conditions per place. [2024-06-14 12:47:25,214 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 32 selfloop transitions, 27 changer transitions 0/63 dead transitions. [2024-06-14 12:47:25,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 487 flow [2024-06-14 12:47:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:47:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:47:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 12:47:25,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:47:25,215 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 319 flow. Second operand 7 states and 96 transitions. [2024-06-14 12:47:25,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 487 flow [2024-06-14 12:47:25,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 441 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 12:47:25,217 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 377 flow [2024-06-14 12:47:25,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-06-14 12:47:25,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-14 12:47:25,218 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 377 flow [2024-06-14 12:47:25,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:25,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:25,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:25,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:47:25,218 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:25,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:25,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1395542115, now seen corresponding path program 1 times [2024-06-14 12:47:25,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:25,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309599257] [2024-06-14 12:47:25,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:25,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:25,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309599257] [2024-06-14 12:47:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309599257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:25,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:25,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:47:25,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298463621] [2024-06-14 12:47:25,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:25,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:47:25,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:25,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:47:25,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:47:25,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:25,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 377 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:25,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:25,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:25,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:26,119 INFO L124 PetriNetUnfolderBase]: 166/325 cut-off events. [2024-06-14 12:47:26,119 INFO L125 PetriNetUnfolderBase]: For 1742/1742 co-relation queries the response was YES. [2024-06-14 12:47:26,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 325 events. 166/325 cut-off events. For 1742/1742 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1315 event pairs, 36 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1390. Up to 269 conditions per place. [2024-06-14 12:47:26,121 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 53 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-14 12:47:26,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 561 flow [2024-06-14 12:47:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:47:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:47:26,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-14 12:47:26,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-14 12:47:26,122 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 377 flow. Second operand 7 states and 97 transitions. [2024-06-14 12:47:26,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 561 flow [2024-06-14 12:47:26,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 533 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 12:47:26,126 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 402 flow [2024-06-14 12:47:26,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=402, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-14 12:47:26,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 12:47:26,126 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 402 flow [2024-06-14 12:47:26,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:47:26,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:26,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:26,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:47:26,127 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:26,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2039189501, now seen corresponding path program 1 times [2024-06-14 12:47:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:26,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115579859] [2024-06-14 12:47:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:26,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:26,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115579859] [2024-06-14 12:47:26,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115579859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:26,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:26,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:26,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094194498] [2024-06-14 12:47:26,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:26,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:26,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:26,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 402 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:26,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:26,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:26,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:27,087 INFO L124 PetriNetUnfolderBase]: 172/337 cut-off events. [2024-06-14 12:47:27,087 INFO L125 PetriNetUnfolderBase]: For 2038/2038 co-relation queries the response was YES. [2024-06-14 12:47:27,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 337 events. 172/337 cut-off events. For 2038/2038 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1366 event pairs, 35 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 1494. Up to 260 conditions per place. [2024-06-14 12:47:27,089 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 46 selfloop transitions, 21 changer transitions 0/71 dead transitions. [2024-06-14 12:47:27,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 598 flow [2024-06-14 12:47:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 12:47:27,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 12:47:27,091 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 402 flow. Second operand 8 states and 108 transitions. [2024-06-14 12:47:27,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 598 flow [2024-06-14 12:47:27,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 561 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:47:27,094 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 446 flow [2024-06-14 12:47:27,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-06-14 12:47:27,095 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-14 12:47:27,095 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 446 flow [2024-06-14 12:47:27,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:27,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:27,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:27,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:47:27,096 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:27,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:27,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2083048895, now seen corresponding path program 2 times [2024-06-14 12:47:27,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:27,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357705442] [2024-06-14 12:47:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:27,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:27,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:27,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357705442] [2024-06-14 12:47:27,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357705442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:27,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:27,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825417429] [2024-06-14 12:47:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:27,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:27,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:27,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:27,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:27,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 446 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:27,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:27,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:27,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:28,096 INFO L124 PetriNetUnfolderBase]: 175/342 cut-off events. [2024-06-14 12:47:28,096 INFO L125 PetriNetUnfolderBase]: For 2388/2388 co-relation queries the response was YES. [2024-06-14 12:47:28,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 342 events. 175/342 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1402 event pairs, 39 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1605. Up to 298 conditions per place. [2024-06-14 12:47:28,098 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 56 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-14 12:47:28,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 628 flow [2024-06-14 12:47:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-14 12:47:28,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:47:28,100 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 446 flow. Second operand 8 states and 102 transitions. [2024-06-14 12:47:28,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 628 flow [2024-06-14 12:47:28,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 571 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:28,104 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 453 flow [2024-06-14 12:47:28,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=453, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-06-14 12:47:28,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-14 12:47:28,104 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 453 flow [2024-06-14 12:47:28,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:28,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:28,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:28,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:47:28,105 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:28,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1661997263, now seen corresponding path program 3 times [2024-06-14 12:47:28,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:28,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495994989] [2024-06-14 12:47:28,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:28,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:28,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:28,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495994989] [2024-06-14 12:47:28,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495994989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:28,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:28,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:28,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430546346] [2024-06-14 12:47:28,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:28,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:28,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:28,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:28,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:29,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:29,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 453 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:29,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:29,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:29,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:29,175 INFO L124 PetriNetUnfolderBase]: 183/353 cut-off events. [2024-06-14 12:47:29,175 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-14 12:47:29,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 353 events. 183/353 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1425 event pairs, 38 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 1704. Up to 240 conditions per place. [2024-06-14 12:47:29,177 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 40 selfloop transitions, 35 changer transitions 0/79 dead transitions. [2024-06-14 12:47:29,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 721 flow [2024-06-14 12:47:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-14 12:47:29,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4296875 [2024-06-14 12:47:29,179 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 453 flow. Second operand 8 states and 110 transitions. [2024-06-14 12:47:29,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 721 flow [2024-06-14 12:47:29,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 678 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 12:47:29,183 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 568 flow [2024-06-14 12:47:29,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-06-14 12:47:29,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-14 12:47:29,184 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 568 flow [2024-06-14 12:47:29,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:29,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:29,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:29,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:47:29,184 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:29,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:29,185 INFO L85 PathProgramCache]: Analyzing trace with hash -144488451, now seen corresponding path program 4 times [2024-06-14 12:47:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:29,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363368249] [2024-06-14 12:47:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:29,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:29,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:29,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363368249] [2024-06-14 12:47:29,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363368249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:29,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:29,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:29,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182723597] [2024-06-14 12:47:29,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:29,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:29,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:29,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:29,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:29,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:29,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 568 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:29,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:29,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:29,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:30,187 INFO L124 PetriNetUnfolderBase]: 179/347 cut-off events. [2024-06-14 12:47:30,187 INFO L125 PetriNetUnfolderBase]: For 3481/3481 co-relation queries the response was YES. [2024-06-14 12:47:30,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1846 conditions, 347 events. 179/347 cut-off events. For 3481/3481 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1413 event pairs, 38 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1807. Up to 273 conditions per place. [2024-06-14 12:47:30,189 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 54 selfloop transitions, 21 changer transitions 0/79 dead transitions. [2024-06-14 12:47:30,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 774 flow [2024-06-14 12:47:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:30,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 12:47:30,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 12:47:30,191 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 568 flow. Second operand 8 states and 108 transitions. [2024-06-14 12:47:30,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 774 flow [2024-06-14 12:47:30,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 718 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-14 12:47:30,195 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 560 flow [2024-06-14 12:47:30,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=560, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-06-14 12:47:30,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-14 12:47:30,196 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 560 flow [2024-06-14 12:47:30,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:30,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:30,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:30,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:47:30,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:30,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:30,200 INFO L85 PathProgramCache]: Analyzing trace with hash -135906659, now seen corresponding path program 1 times [2024-06-14 12:47:30,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:30,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797037512] [2024-06-14 12:47:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:30,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:31,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:31,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797037512] [2024-06-14 12:47:31,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797037512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:31,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:31,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:31,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263949634] [2024-06-14 12:47:31,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:31,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:31,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:31,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:31,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:31,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:31,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 560 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:31,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:31,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:31,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:31,529 INFO L124 PetriNetUnfolderBase]: 176/344 cut-off events. [2024-06-14 12:47:31,529 INFO L125 PetriNetUnfolderBase]: For 3520/3520 co-relation queries the response was YES. [2024-06-14 12:47:31,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 344 events. 176/344 cut-off events. For 3520/3520 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1397 event pairs, 38 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1796. Up to 294 conditions per place. [2024-06-14 12:47:31,531 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 13 changer transitions 0/79 dead transitions. [2024-06-14 12:47:31,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 734 flow [2024-06-14 12:47:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:31,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:47:31,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:47:31,532 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 560 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:47:31,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 734 flow [2024-06-14 12:47:31,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 654 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:31,537 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 510 flow [2024-06-14 12:47:31,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=510, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-06-14 12:47:31,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-14 12:47:31,537 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 510 flow [2024-06-14 12:47:31,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:31,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:31,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:31,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:47:31,538 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:31,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:31,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1357459054, now seen corresponding path program 1 times [2024-06-14 12:47:31,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:31,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223427938] [2024-06-14 12:47:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:31,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:32,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:32,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223427938] [2024-06-14 12:47:32,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223427938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:32,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:32,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:32,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056416363] [2024-06-14 12:47:32,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:32,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:32,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:32,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:32,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:32,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:32,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 510 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:32,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:32,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:32,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:32,599 INFO L124 PetriNetUnfolderBase]: 179/351 cut-off events. [2024-06-14 12:47:32,599 INFO L125 PetriNetUnfolderBase]: For 3541/3541 co-relation queries the response was YES. [2024-06-14 12:47:32,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 351 events. 179/351 cut-off events. For 3541/3541 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1421 event pairs, 33 based on Foata normal form. 1/351 useless extension candidates. Maximal degree in co-relation 1784. Up to 288 conditions per place. [2024-06-14 12:47:32,602 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2024-06-14 12:47:32,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 732 flow [2024-06-14 12:47:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 12:47:32,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 12:47:32,604 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 510 flow. Second operand 8 states and 108 transitions. [2024-06-14 12:47:32,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 732 flow [2024-06-14 12:47:32,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 678 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:32,611 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 519 flow [2024-06-14 12:47:32,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=519, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-06-14 12:47:32,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-14 12:47:32,612 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 519 flow [2024-06-14 12:47:32,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:32,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:32,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:32,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:47:32,612 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:32,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1209642064, now seen corresponding path program 2 times [2024-06-14 12:47:32,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:32,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356801237] [2024-06-14 12:47:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:32,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:33,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:33,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356801237] [2024-06-14 12:47:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356801237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:33,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:33,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618771126] [2024-06-14 12:47:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:33,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:33,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:33,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:33,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:33,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:33,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:33,809 INFO L124 PetriNetUnfolderBase]: 182/358 cut-off events. [2024-06-14 12:47:33,809 INFO L125 PetriNetUnfolderBase]: For 3971/3971 co-relation queries the response was YES. [2024-06-14 12:47:33,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 358 events. 182/358 cut-off events. For 3971/3971 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1466 event pairs, 33 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1831. Up to 282 conditions per place. [2024-06-14 12:47:33,812 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-14 12:47:33,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 753 flow [2024-06-14 12:47:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 12:47:33,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-14 12:47:33,815 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 519 flow. Second operand 8 states and 107 transitions. [2024-06-14 12:47:33,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 753 flow [2024-06-14 12:47:33,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 706 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:33,827 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 552 flow [2024-06-14 12:47:33,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=552, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-06-14 12:47:33,828 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-14 12:47:33,828 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 552 flow [2024-06-14 12:47:33,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:33,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:33,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:33,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:47:33,829 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:33,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:33,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1209634128, now seen corresponding path program 1 times [2024-06-14 12:47:33,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:33,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042407881] [2024-06-14 12:47:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:33,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:34,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:34,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042407881] [2024-06-14 12:47:34,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042407881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:34,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:34,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:34,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465427212] [2024-06-14 12:47:34,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:34,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:34,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:34,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:34,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:34,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:34,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 552 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:34,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:34,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:34,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:34,821 INFO L124 PetriNetUnfolderBase]: 188/368 cut-off events. [2024-06-14 12:47:34,821 INFO L125 PetriNetUnfolderBase]: For 4727/4727 co-relation queries the response was YES. [2024-06-14 12:47:34,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 368 events. 188/368 cut-off events. For 4727/4727 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1516 event pairs, 32 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1936. Up to 281 conditions per place. [2024-06-14 12:47:34,823 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 60 selfloop transitions, 23 changer transitions 0/87 dead transitions. [2024-06-14 12:47:34,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 806 flow [2024-06-14 12:47:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 12:47:34,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-14 12:47:34,825 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 552 flow. Second operand 8 states and 109 transitions. [2024-06-14 12:47:34,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 806 flow [2024-06-14 12:47:34,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 744 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:34,830 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 595 flow [2024-06-14 12:47:34,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=595, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-06-14 12:47:34,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-14 12:47:34,831 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 595 flow [2024-06-14 12:47:34,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:34,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:34,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:34,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:47:34,831 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:34,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:34,832 INFO L85 PathProgramCache]: Analyzing trace with hash -25051204, now seen corresponding path program 3 times [2024-06-14 12:47:34,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:34,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014636302] [2024-06-14 12:47:34,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:34,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:35,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:35,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014636302] [2024-06-14 12:47:35,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014636302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:35,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:35,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:35,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232765702] [2024-06-14 12:47:35,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:35,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:35,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:35,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:35,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:35,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:35,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:35,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:35,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:35,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:36,015 INFO L124 PetriNetUnfolderBase]: 191/373 cut-off events. [2024-06-14 12:47:36,015 INFO L125 PetriNetUnfolderBase]: For 5144/5144 co-relation queries the response was YES. [2024-06-14 12:47:36,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 373 events. 191/373 cut-off events. For 5144/5144 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1547 event pairs, 35 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 2038. Up to 296 conditions per place. [2024-06-14 12:47:36,017 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 20 changer transitions 0/88 dead transitions. [2024-06-14 12:47:36,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 859 flow [2024-06-14 12:47:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 12:47:36,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-14 12:47:36,018 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 595 flow. Second operand 8 states and 107 transitions. [2024-06-14 12:47:36,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 859 flow [2024-06-14 12:47:36,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 790 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:36,024 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 611 flow [2024-06-14 12:47:36,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-14 12:47:36,025 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-14 12:47:36,025 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 611 flow [2024-06-14 12:47:36,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:36,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:36,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:36,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:47:36,025 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:36,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash 72318670, now seen corresponding path program 4 times [2024-06-14 12:47:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:36,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001249399] [2024-06-14 12:47:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:36,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:36,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001249399] [2024-06-14 12:47:36,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001249399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:36,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:36,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:36,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832360115] [2024-06-14 12:47:36,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:36,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:36,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:36,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:37,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:37,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 611 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:37,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:37,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:37,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:37,229 INFO L124 PetriNetUnfolderBase]: 189/370 cut-off events. [2024-06-14 12:47:37,229 INFO L125 PetriNetUnfolderBase]: For 5336/5336 co-relation queries the response was YES. [2024-06-14 12:47:37,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 370 events. 189/370 cut-off events. For 5336/5336 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1546 event pairs, 35 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 2007. Up to 267 conditions per place. [2024-06-14 12:47:37,231 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 30 changer transitions 0/89 dead transitions. [2024-06-14 12:47:37,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 861 flow [2024-06-14 12:47:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 12:47:37,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-14 12:47:37,232 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 611 flow. Second operand 8 states and 107 transitions. [2024-06-14 12:47:37,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 861 flow [2024-06-14 12:47:37,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 792 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:37,238 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 651 flow [2024-06-14 12:47:37,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-14 12:47:37,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-14 12:47:37,239 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 651 flow [2024-06-14 12:47:37,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:37,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:37,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:37,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:47:37,239 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 12:47:37,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:37,240 INFO L85 PathProgramCache]: Analyzing trace with hash -24841458, now seen corresponding path program 2 times [2024-06-14 12:47:37,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:37,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069139714] [2024-06-14 12:47:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:37,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:38,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:38,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069139714] [2024-06-14 12:47:38,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069139714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:38,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:38,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536995144] [2024-06-14 12:47:38,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:38,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:38,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:38,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:38,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:38,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:38,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 651 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:38,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:38,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:38,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:38,324 INFO L124 PetriNetUnfolderBase]: 195/382 cut-off events. [2024-06-14 12:47:38,324 INFO L125 PetriNetUnfolderBase]: For 6161/6161 co-relation queries the response was YES. [2024-06-14 12:47:38,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 382 events. 195/382 cut-off events. For 6161/6161 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1622 event pairs, 35 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 2116. Up to 294 conditions per place. [2024-06-14 12:47:38,327 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-14 12:47:38,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 943 flow [2024-06-14 12:47:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 12:47:38,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-14 12:47:38,328 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 651 flow. Second operand 8 states and 109 transitions. [2024-06-14 12:47:38,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 943 flow [2024-06-14 12:47:38,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 850 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:38,334 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 672 flow [2024-06-14 12:47:38,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=672, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-06-14 12:47:38,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 12:47:38,335 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 672 flow [2024-06-14 12:47:38,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:38,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:38,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:38,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:47:38,335 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:38,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 81849806, now seen corresponding path program 3 times [2024-06-14 12:47:38,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:38,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164073944] [2024-06-14 12:47:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:38,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:39,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:39,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164073944] [2024-06-14 12:47:39,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164073944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:39,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:39,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742849148] [2024-06-14 12:47:39,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:39,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:39,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:39,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:39,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:39,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 672 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:39,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:39,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:39,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:39,548 INFO L124 PetriNetUnfolderBase]: 198/389 cut-off events. [2024-06-14 12:47:39,548 INFO L125 PetriNetUnfolderBase]: For 6450/6450 co-relation queries the response was YES. [2024-06-14 12:47:39,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 389 events. 198/389 cut-off events. For 6450/6450 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1644 event pairs, 36 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 2174. Up to 329 conditions per place. [2024-06-14 12:47:39,551 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 75 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-14 12:47:39,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 95 transitions, 908 flow [2024-06-14 12:47:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:47:39,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:47:39,552 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 672 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:47:39,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 95 transitions, 908 flow [2024-06-14 12:47:39,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 818 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:39,559 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 654 flow [2024-06-14 12:47:39,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=654, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-06-14 12:47:39,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-14 12:47:39,560 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 654 flow [2024-06-14 12:47:39,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:39,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:39,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:39,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:47:39,560 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:39,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:39,560 INFO L85 PathProgramCache]: Analyzing trace with hash 72326606, now seen corresponding path program 4 times [2024-06-14 12:47:39,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:39,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176072212] [2024-06-14 12:47:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:39,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:40,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:40,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176072212] [2024-06-14 12:47:40,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176072212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:40,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:40,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:40,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415702877] [2024-06-14 12:47:40,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:40,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:40,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:40,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:40,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:40,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:40,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 654 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:40,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:40,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:40,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:40,837 INFO L124 PetriNetUnfolderBase]: 196/382 cut-off events. [2024-06-14 12:47:40,838 INFO L125 PetriNetUnfolderBase]: For 6137/6137 co-relation queries the response was YES. [2024-06-14 12:47:40,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 382 events. 196/382 cut-off events. For 6137/6137 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1599 event pairs, 35 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 2081. Up to 262 conditions per place. [2024-06-14 12:47:40,840 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 56 selfloop transitions, 37 changer transitions 0/97 dead transitions. [2024-06-14 12:47:40,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 920 flow [2024-06-14 12:47:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 12:47:40,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 12:47:40,842 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 654 flow. Second operand 9 states and 120 transitions. [2024-06-14 12:47:40,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 920 flow [2024-06-14 12:47:40,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 866 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:40,849 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 717 flow [2024-06-14 12:47:40,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=717, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2024-06-14 12:47:40,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-14 12:47:40,850 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 717 flow [2024-06-14 12:47:40,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:40,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:40,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:40,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:47:40,850 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:40,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:40,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1089015044, now seen corresponding path program 1 times [2024-06-14 12:47:40,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:40,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718097180] [2024-06-14 12:47:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:40,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:41,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:41,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718097180] [2024-06-14 12:47:41,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718097180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:41,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:41,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485066091] [2024-06-14 12:47:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:41,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:41,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:41,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:41,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 717 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:41,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:41,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:41,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:41,809 INFO L124 PetriNetUnfolderBase]: 200/394 cut-off events. [2024-06-14 12:47:41,809 INFO L125 PetriNetUnfolderBase]: For 6894/6894 co-relation queries the response was YES. [2024-06-14 12:47:41,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 394 events. 200/394 cut-off events. For 6894/6894 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1674 event pairs, 13 based on Foata normal form. 2/395 useless extension candidates. Maximal degree in co-relation 2191. Up to 305 conditions per place. [2024-06-14 12:47:41,812 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 87 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2024-06-14 12:47:41,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 965 flow [2024-06-14 12:47:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 12:47:41,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-14 12:47:41,813 INFO L175 Difference]: Start difference. First operand has 95 places, 87 transitions, 717 flow. Second operand 8 states and 107 transitions. [2024-06-14 12:47:41,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 965 flow [2024-06-14 12:47:41,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 103 transitions, 864 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:41,820 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 656 flow [2024-06-14 12:47:41,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=656, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-06-14 12:47:41,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 12:47:41,820 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 656 flow [2024-06-14 12:47:41,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:41,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:41,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:41,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:47:41,820 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:41,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash 865641566, now seen corresponding path program 2 times [2024-06-14 12:47:41,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:41,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127171536] [2024-06-14 12:47:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:41,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:42,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127171536] [2024-06-14 12:47:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127171536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:42,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393409247] [2024-06-14 12:47:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:42,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:42,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:42,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:42,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:42,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:42,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:42,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:42,767 INFO L124 PetriNetUnfolderBase]: 204/402 cut-off events. [2024-06-14 12:47:42,767 INFO L125 PetriNetUnfolderBase]: For 7246/7246 co-relation queries the response was YES. [2024-06-14 12:47:42,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 402 events. 204/402 cut-off events. For 7246/7246 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1723 event pairs, 30 based on Foata normal form. 2/403 useless extension candidates. Maximal degree in co-relation 2177. Up to 330 conditions per place. [2024-06-14 12:47:42,770 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 86 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2024-06-14 12:47:42,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 904 flow [2024-06-14 12:47:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 12:47:42,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 12:47:42,771 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 656 flow. Second operand 8 states and 108 transitions. [2024-06-14 12:47:42,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 904 flow [2024-06-14 12:47:42,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 874 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:42,778 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 670 flow [2024-06-14 12:47:42,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=670, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-06-14 12:47:42,779 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-14 12:47:42,779 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 670 flow [2024-06-14 12:47:42,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:42,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:42,779 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 12:47:42,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:47:42,779 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:42,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:42,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1665659900, now seen corresponding path program 1 times [2024-06-14 12:47:42,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:42,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320392362] [2024-06-14 12:47:42,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:43,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:43,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320392362] [2024-06-14 12:47:43,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320392362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:43,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:43,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:43,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473952887] [2024-06-14 12:47:43,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:43,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:43,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:43,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:43,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:43,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:43,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 670 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:43,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:43,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:43,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:43,921 INFO L124 PetriNetUnfolderBase]: 210/412 cut-off events. [2024-06-14 12:47:43,922 INFO L125 PetriNetUnfolderBase]: For 8048/8048 co-relation queries the response was YES. [2024-06-14 12:47:43,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 412 events. 210/412 cut-off events. For 8048/8048 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1776 event pairs, 29 based on Foata normal form. 2/413 useless extension candidates. Maximal degree in co-relation 2283. Up to 337 conditions per place. [2024-06-14 12:47:43,924 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 86 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-14 12:47:43,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 960 flow [2024-06-14 12:47:43,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 12:47:43,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 12:47:43,925 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 670 flow. Second operand 9 states and 120 transitions. [2024-06-14 12:47:43,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 960 flow [2024-06-14 12:47:43,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 106 transitions, 926 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:43,934 INFO L231 Difference]: Finished difference. Result has 101 places, 91 transitions, 719 flow [2024-06-14 12:47:43,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=719, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2024-06-14 12:47:43,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-14 12:47:43,935 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 719 flow [2024-06-14 12:47:43,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:43,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:43,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:43,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:47:43,936 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:43,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:43,936 INFO L85 PathProgramCache]: Analyzing trace with hash 798536606, now seen corresponding path program 3 times [2024-06-14 12:47:43,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:43,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581563999] [2024-06-14 12:47:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:43,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:44,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:44,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581563999] [2024-06-14 12:47:44,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581563999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:44,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:44,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:44,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597110022] [2024-06-14 12:47:44,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:44,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:44,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:44,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:44,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 719 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:44,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:44,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:44,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:44,811 INFO L124 PetriNetUnfolderBase]: 214/420 cut-off events. [2024-06-14 12:47:44,811 INFO L125 PetriNetUnfolderBase]: For 8660/8660 co-relation queries the response was YES. [2024-06-14 12:47:44,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2405 conditions, 420 events. 214/420 cut-off events. For 8660/8660 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1809 event pairs, 29 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 2356. Up to 349 conditions per place. [2024-06-14 12:47:44,814 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 86 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-14 12:47:44,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 1011 flow [2024-06-14 12:47:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 12:47:44,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-14 12:47:44,815 INFO L175 Difference]: Start difference. First operand has 101 places, 91 transitions, 719 flow. Second operand 8 states and 105 transitions. [2024-06-14 12:47:44,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 1011 flow [2024-06-14 12:47:44,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 946 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:44,824 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 760 flow [2024-06-14 12:47:44,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=760, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2024-06-14 12:47:44,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-14 12:47:44,826 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 760 flow [2024-06-14 12:47:44,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:44,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:44,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:44,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:47:44,826 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:44,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 970609790, now seen corresponding path program 2 times [2024-06-14 12:47:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137035031] [2024-06-14 12:47:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:44,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137035031] [2024-06-14 12:47:45,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137035031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:45,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:45,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:45,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692594947] [2024-06-14 12:47:45,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:45,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:45,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:46,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:46,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 760 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:46,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:46,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:46,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:46,441 INFO L124 PetriNetUnfolderBase]: 231/451 cut-off events. [2024-06-14 12:47:46,442 INFO L125 PetriNetUnfolderBase]: For 9499/9499 co-relation queries the response was YES. [2024-06-14 12:47:46,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 451 events. 231/451 cut-off events. For 9499/9499 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2013 event pairs, 30 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 2542. Up to 369 conditions per place. [2024-06-14 12:47:46,445 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-14 12:47:46,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 1225 flow [2024-06-14 12:47:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:47:46,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:47:46,447 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 760 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:47:46,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 1225 flow [2024-06-14 12:47:46,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 118 transitions, 1134 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-14 12:47:46,458 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 919 flow [2024-06-14 12:47:46,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=919, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-06-14 12:47:46,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-14 12:47:46,459 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 919 flow [2024-06-14 12:47:46,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:46,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:46,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:47:46,459 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:46,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:46,459 INFO L85 PathProgramCache]: Analyzing trace with hash -510544450, now seen corresponding path program 3 times [2024-06-14 12:47:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:46,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830822920] [2024-06-14 12:47:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:46,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:47,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830822920] [2024-06-14 12:47:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830822920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:47,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:47,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094017879] [2024-06-14 12:47:47,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:47,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:47,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 919 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:47,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:47,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:47,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:47,745 INFO L124 PetriNetUnfolderBase]: 255/497 cut-off events. [2024-06-14 12:47:47,745 INFO L125 PetriNetUnfolderBase]: For 12029/12029 co-relation queries the response was YES. [2024-06-14 12:47:47,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3057 conditions, 497 events. 255/497 cut-off events. For 12029/12029 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2271 event pairs, 28 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 3001. Up to 391 conditions per place. [2024-06-14 12:47:47,748 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 98 selfloop transitions, 30 changer transitions 0/132 dead transitions. [2024-06-14 12:47:47,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 132 transitions, 1492 flow [2024-06-14 12:47:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:47:47,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-14 12:47:47,749 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 919 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:47:47,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 132 transitions, 1492 flow [2024-06-14 12:47:47,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 132 transitions, 1442 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-14 12:47:47,763 INFO L231 Difference]: Finished difference. Result has 121 places, 117 transitions, 1125 flow [2024-06-14 12:47:47,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1125, PETRI_PLACES=121, PETRI_TRANSITIONS=117} [2024-06-14 12:47:47,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-14 12:47:47,764 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 117 transitions, 1125 flow [2024-06-14 12:47:47,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:47,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:47,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:47,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:47:47,764 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:47,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1704980616, now seen corresponding path program 4 times [2024-06-14 12:47:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279223820] [2024-06-14 12:47:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:47,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279223820] [2024-06-14 12:47:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279223820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:48,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:48,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204363909] [2024-06-14 12:47:48,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:48,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:48,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:48,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:48,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 117 transitions, 1125 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:48,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:48,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:48,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:49,257 INFO L124 PetriNetUnfolderBase]: 253/494 cut-off events. [2024-06-14 12:47:49,257 INFO L125 PetriNetUnfolderBase]: For 12437/12437 co-relation queries the response was YES. [2024-06-14 12:47:49,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3108 conditions, 494 events. 253/494 cut-off events. For 12437/12437 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2259 event pairs, 28 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 3049. Up to 406 conditions per place. [2024-06-14 12:47:49,260 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2024-06-14 12:47:49,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 1450 flow [2024-06-14 12:47:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:47:49,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:47:49,261 INFO L175 Difference]: Start difference. First operand has 121 places, 117 transitions, 1125 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:47:49,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 1450 flow [2024-06-14 12:47:49,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 131 transitions, 1369 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:49,276 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 1137 flow [2024-06-14 12:47:49,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1137, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2024-06-14 12:47:49,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-14 12:47:49,277 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 1137 flow [2024-06-14 12:47:49,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:49,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:49,277 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 12:47:49,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:47:49,277 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:49,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1704971688, now seen corresponding path program 1 times [2024-06-14 12:47:49,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:49,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812811753] [2024-06-14 12:47:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:49,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:50,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:50,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812811753] [2024-06-14 12:47:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812811753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:50,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:50,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551237035] [2024-06-14 12:47:50,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:50,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:50,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:50,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:50,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:50,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:50,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 1137 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:50,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:50,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:50,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:50,661 INFO L124 PetriNetUnfolderBase]: 273/538 cut-off events. [2024-06-14 12:47:50,661 INFO L125 PetriNetUnfolderBase]: For 18024/18024 co-relation queries the response was YES. [2024-06-14 12:47:50,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3364 conditions, 538 events. 273/538 cut-off events. For 18024/18024 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2535 event pairs, 32 based on Foata normal form. 12/549 useless extension candidates. Maximal degree in co-relation 3304. Up to 405 conditions per place. [2024-06-14 12:47:50,664 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 106 selfloop transitions, 22 changer transitions 6/138 dead transitions. [2024-06-14 12:47:50,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 138 transitions, 1536 flow [2024-06-14 12:47:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:50,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:47:50,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-14 12:47:50,665 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 1137 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:47:50,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 138 transitions, 1536 flow [2024-06-14 12:47:50,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 138 transitions, 1459 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:50,682 INFO L231 Difference]: Finished difference. Result has 129 places, 117 transitions, 1115 flow [2024-06-14 12:47:50,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1115, PETRI_PLACES=129, PETRI_TRANSITIONS=117} [2024-06-14 12:47:50,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-14 12:47:50,683 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 117 transitions, 1115 flow [2024-06-14 12:47:50,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:50,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:50,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:50,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:47:50,684 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:50,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:50,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1156039580, now seen corresponding path program 5 times [2024-06-14 12:47:50,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:50,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539890128] [2024-06-14 12:47:50,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:50,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:51,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:51,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539890128] [2024-06-14 12:47:51,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539890128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:51,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:51,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:51,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708287397] [2024-06-14 12:47:51,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:51,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:51,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:51,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:51,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 117 transitions, 1115 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:51,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:51,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:51,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:52,091 INFO L124 PetriNetUnfolderBase]: 265/529 cut-off events. [2024-06-14 12:47:52,092 INFO L125 PetriNetUnfolderBase]: For 15265/15265 co-relation queries the response was YES. [2024-06-14 12:47:52,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 529 events. 265/529 cut-off events. For 15265/15265 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2508 event pairs, 32 based on Foata normal form. 3/531 useless extension candidates. Maximal degree in co-relation 3258. Up to 380 conditions per place. [2024-06-14 12:47:52,095 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 46 changer transitions 0/132 dead transitions. [2024-06-14 12:47:52,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 132 transitions, 1563 flow [2024-06-14 12:47:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 12:47:52,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-14 12:47:52,096 INFO L175 Difference]: Start difference. First operand has 129 places, 117 transitions, 1115 flow. Second operand 9 states and 122 transitions. [2024-06-14 12:47:52,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 132 transitions, 1563 flow [2024-06-14 12:47:52,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 132 transitions, 1437 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:52,116 INFO L231 Difference]: Finished difference. Result has 130 places, 121 transitions, 1203 flow [2024-06-14 12:47:52,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1203, PETRI_PLACES=130, PETRI_TRANSITIONS=121} [2024-06-14 12:47:52,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-14 12:47:52,117 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 121 transitions, 1203 flow [2024-06-14 12:47:52,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:52,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:52,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:52,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:47:52,118 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:52,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1421103044, now seen corresponding path program 4 times [2024-06-14 12:47:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:52,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438228863] [2024-06-14 12:47:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:52,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:52,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:52,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438228863] [2024-06-14 12:47:52,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438228863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:52,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:52,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:47:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961303065] [2024-06-14 12:47:52,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:52,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:47:52,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:47:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:47:52,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:52,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 121 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:52,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:52,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:52,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:53,026 INFO L124 PetriNetUnfolderBase]: 262/522 cut-off events. [2024-06-14 12:47:53,026 INFO L125 PetriNetUnfolderBase]: For 14241/14241 co-relation queries the response was YES. [2024-06-14 12:47:53,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 522 events. 262/522 cut-off events. For 14241/14241 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2487 event pairs, 34 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 3190. Up to 432 conditions per place. [2024-06-14 12:47:53,029 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 106 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2024-06-14 12:47:53,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 131 transitions, 1512 flow [2024-06-14 12:47:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:47:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:47:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 12:47:53,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-14 12:47:53,030 INFO L175 Difference]: Start difference. First operand has 130 places, 121 transitions, 1203 flow. Second operand 8 states and 105 transitions. [2024-06-14 12:47:53,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 131 transitions, 1512 flow [2024-06-14 12:47:53,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 1431 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-14 12:47:53,049 INFO L231 Difference]: Finished difference. Result has 134 places, 123 transitions, 1210 flow [2024-06-14 12:47:53,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1210, PETRI_PLACES=134, PETRI_TRANSITIONS=123} [2024-06-14 12:47:53,050 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-14 12:47:53,050 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 123 transitions, 1210 flow [2024-06-14 12:47:53,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:53,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:53,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:53,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:47:53,050 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:53,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1414431844, now seen corresponding path program 6 times [2024-06-14 12:47:53,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:53,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800082579] [2024-06-14 12:47:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:53,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:54,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800082579] [2024-06-14 12:47:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800082579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:54,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792892683] [2024-06-14 12:47:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:54,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:54,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:54,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:54,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 123 transitions, 1210 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:54,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:54,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:54,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:54,471 INFO L124 PetriNetUnfolderBase]: 278/552 cut-off events. [2024-06-14 12:47:54,471 INFO L125 PetriNetUnfolderBase]: For 16276/16276 co-relation queries the response was YES. [2024-06-14 12:47:54,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3607 conditions, 552 events. 278/552 cut-off events. For 16276/16276 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2684 event pairs, 34 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 3543. Up to 426 conditions per place. [2024-06-14 12:47:54,474 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 101 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-14 12:47:54,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 138 transitions, 1694 flow [2024-06-14 12:47:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 12:47:54,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-14 12:47:54,475 INFO L175 Difference]: Start difference. First operand has 134 places, 123 transitions, 1210 flow. Second operand 9 states and 122 transitions. [2024-06-14 12:47:54,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 138 transitions, 1694 flow [2024-06-14 12:47:54,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 138 transitions, 1597 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:54,495 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 1314 flow [2024-06-14 12:47:54,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1314, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2024-06-14 12:47:54,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-14 12:47:54,496 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 1314 flow [2024-06-14 12:47:54,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:54,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:54,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:54,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:47:54,496 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:54,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash -540404704, now seen corresponding path program 7 times [2024-06-14 12:47:54,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:54,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65539173] [2024-06-14 12:47:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:54,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65539173] [2024-06-14 12:47:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65539173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:55,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697647621] [2024-06-14 12:47:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:55,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:55,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:55,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 1314 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:55,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:55,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:55,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:55,707 INFO L124 PetriNetUnfolderBase]: 289/576 cut-off events. [2024-06-14 12:47:55,707 INFO L125 PetriNetUnfolderBase]: For 18644/18644 co-relation queries the response was YES. [2024-06-14 12:47:55,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3907 conditions, 576 events. 289/576 cut-off events. For 18644/18644 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2837 event pairs, 80 based on Foata normal form. 2/576 useless extension candidates. Maximal degree in co-relation 3842. Up to 484 conditions per place. [2024-06-14 12:47:55,710 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-06-14 12:47:55,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 142 transitions, 1808 flow [2024-06-14 12:47:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:47:55,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 12:47:55,711 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 1314 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:47:55,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 142 transitions, 1808 flow [2024-06-14 12:47:55,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 1714 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-14 12:47:55,735 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 1405 flow [2024-06-14 12:47:55,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1405, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-06-14 12:47:55,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-14 12:47:55,736 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 1405 flow [2024-06-14 12:47:55,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:55,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:55,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:55,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:47:55,736 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:55,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -770330464, now seen corresponding path program 8 times [2024-06-14 12:47:55,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:55,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877782328] [2024-06-14 12:47:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:55,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:56,594 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 12:47:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877782328] [2024-06-14 12:47:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877782328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:56,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881865758] [2024-06-14 12:47:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:56,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:56,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:56,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:56,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 1405 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:56,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:56,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:56,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:56,980 INFO L124 PetriNetUnfolderBase]: 287/571 cut-off events. [2024-06-14 12:47:56,981 INFO L125 PetriNetUnfolderBase]: For 17785/17785 co-relation queries the response was YES. [2024-06-14 12:47:56,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3835 conditions, 571 events. 287/571 cut-off events. For 17785/17785 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2791 event pairs, 34 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 3768. Up to 443 conditions per place. [2024-06-14 12:47:56,984 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 35 changer transitions 0/144 dead transitions. [2024-06-14 12:47:56,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 144 transitions, 1825 flow [2024-06-14 12:47:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 12:47:56,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-14 12:47:56,989 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 1405 flow. Second operand 9 states and 123 transitions. [2024-06-14 12:47:56,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 144 transitions, 1825 flow [2024-06-14 12:47:57,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 144 transitions, 1727 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-14 12:47:57,014 INFO L231 Difference]: Finished difference. Result has 145 places, 135 transitions, 1436 flow [2024-06-14 12:47:57,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1436, PETRI_PLACES=145, PETRI_TRANSITIONS=135} [2024-06-14 12:47:57,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-14 12:47:57,015 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 135 transitions, 1436 flow [2024-06-14 12:47:57,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:57,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:57,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:57,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:47:57,016 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:57,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2052850626, now seen corresponding path program 9 times [2024-06-14 12:47:57,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:57,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170198690] [2024-06-14 12:47:57,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:57,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:57,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170198690] [2024-06-14 12:47:57,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170198690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:57,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:57,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333069869] [2024-06-14 12:47:57,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:57,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:57,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:57,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:57,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:57,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 135 transitions, 1436 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:57,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:57,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:57,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:58,240 INFO L124 PetriNetUnfolderBase]: 290/576 cut-off events. [2024-06-14 12:47:58,240 INFO L125 PetriNetUnfolderBase]: For 18012/18012 co-relation queries the response was YES. [2024-06-14 12:47:58,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3876 conditions, 576 events. 290/576 cut-off events. For 18012/18012 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2801 event pairs, 34 based on Foata normal form. 1/573 useless extension candidates. Maximal degree in co-relation 3807. Up to 393 conditions per place. [2024-06-14 12:47:58,243 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 56 changer transitions 0/150 dead transitions. [2024-06-14 12:47:58,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 150 transitions, 1946 flow [2024-06-14 12:47:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 12:47:58,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-14 12:47:58,253 INFO L175 Difference]: Start difference. First operand has 145 places, 135 transitions, 1436 flow. Second operand 9 states and 123 transitions. [2024-06-14 12:47:58,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 150 transitions, 1946 flow [2024-06-14 12:47:58,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 1838 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:58,284 INFO L231 Difference]: Finished difference. Result has 150 places, 141 transitions, 1622 flow [2024-06-14 12:47:58,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1622, PETRI_PLACES=150, PETRI_TRANSITIONS=141} [2024-06-14 12:47:58,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-14 12:47:58,286 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 141 transitions, 1622 flow [2024-06-14 12:47:58,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:58,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:58,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:58,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:47:58,286 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:58,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2053087776, now seen corresponding path program 10 times [2024-06-14 12:47:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:58,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578638246] [2024-06-14 12:47:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:58,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:59,288 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 12:47:59,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:59,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578638246] [2024-06-14 12:47:59,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578638246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:59,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:59,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:59,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604716957] [2024-06-14 12:47:59,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:59,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:59,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:59,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:47:59,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 141 transitions, 1622 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:59,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:59,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:47:59,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:59,654 INFO L124 PetriNetUnfolderBase]: 293/579 cut-off events. [2024-06-14 12:47:59,654 INFO L125 PetriNetUnfolderBase]: For 19035/19035 co-relation queries the response was YES. [2024-06-14 12:47:59,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 579 events. 293/579 cut-off events. For 19035/19035 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2830 event pairs, 34 based on Foata normal form. 1/576 useless extension candidates. Maximal degree in co-relation 3997. Up to 326 conditions per place. [2024-06-14 12:47:59,657 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 76 changer transitions 0/156 dead transitions. [2024-06-14 12:47:59,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 156 transitions, 2298 flow [2024-06-14 12:47:59,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-14 12:47:59,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 12:47:59,665 INFO L175 Difference]: Start difference. First operand has 150 places, 141 transitions, 1622 flow. Second operand 9 states and 128 transitions. [2024-06-14 12:47:59,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 156 transitions, 2298 flow [2024-06-14 12:47:59,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 156 transitions, 2168 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-14 12:47:59,695 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 1785 flow [2024-06-14 12:47:59,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1785, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-06-14 12:47:59,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-14 12:47:59,697 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 1785 flow [2024-06-14 12:47:59,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:59,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:59,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:59,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:47:59,698 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:47:59,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash -798547652, now seen corresponding path program 2 times [2024-06-14 12:47:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:59,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654261968] [2024-06-14 12:47:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:00,450 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 12:48:00,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:00,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654261968] [2024-06-14 12:48:00,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654261968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:00,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:00,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024284016] [2024-06-14 12:48:00,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:00,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:00,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:00,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 1785 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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 12:48:00,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:00,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:00,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:00,780 INFO L124 PetriNetUnfolderBase]: 313/625 cut-off events. [2024-06-14 12:48:00,780 INFO L125 PetriNetUnfolderBase]: For 28007/28007 co-relation queries the response was YES. [2024-06-14 12:48:00,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4469 conditions, 625 events. 313/625 cut-off events. For 28007/28007 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3125 event pairs, 35 based on Foata normal form. 12/636 useless extension candidates. Maximal degree in co-relation 4395. Up to 430 conditions per place. [2024-06-14 12:48:00,783 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 30 changer transitions 6/161 dead transitions. [2024-06-14 12:48:00,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 161 transitions, 2245 flow [2024-06-14 12:48:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:00,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 12:48:00,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-14 12:48:00,784 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 1785 flow. Second operand 9 states and 124 transitions. [2024-06-14 12:48:00,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 161 transitions, 2245 flow [2024-06-14 12:48:00,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 161 transitions, 2040 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:00,817 INFO L231 Difference]: Finished difference. Result has 157 places, 144 transitions, 1666 flow [2024-06-14 12:48:00,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1666, PETRI_PLACES=157, PETRI_TRANSITIONS=144} [2024-06-14 12:48:00,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-14 12:48:00,818 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 144 transitions, 1666 flow [2024-06-14 12:48:00,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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 12:48:00,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:00,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:00,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:48:00,818 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:00,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:00,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2052841698, now seen corresponding path program 3 times [2024-06-14 12:48:00,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:00,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504047204] [2024-06-14 12:48:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:00,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:02,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504047204] [2024-06-14 12:48:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504047204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:02,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:02,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:02,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080431580] [2024-06-14 12:48:02,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:02,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:02,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:02,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:02,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 144 transitions, 1666 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:02,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:02,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:02,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:02,439 INFO L124 PetriNetUnfolderBase]: 305/611 cut-off events. [2024-06-14 12:48:02,439 INFO L125 PetriNetUnfolderBase]: For 21499/21499 co-relation queries the response was YES. [2024-06-14 12:48:02,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 611 events. 305/611 cut-off events. For 21499/21499 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3064 event pairs, 38 based on Foata normal form. 2/609 useless extension candidates. Maximal degree in co-relation 4136. Up to 461 conditions per place. [2024-06-14 12:48:02,443 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 43 changer transitions 0/155 dead transitions. [2024-06-14 12:48:02,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 2024 flow [2024-06-14 12:48:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:02,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:48:02,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:48:02,457 INFO L175 Difference]: Start difference. First operand has 157 places, 144 transitions, 1666 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:48:02,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 2024 flow [2024-06-14 12:48:02,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 155 transitions, 1946 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:02,491 INFO L231 Difference]: Finished difference. Result has 160 places, 145 transitions, 1714 flow [2024-06-14 12:48:02,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1714, PETRI_PLACES=160, PETRI_TRANSITIONS=145} [2024-06-14 12:48:02,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-14 12:48:02,494 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 145 transitions, 1714 flow [2024-06-14 12:48:02,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:02,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:02,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:02,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:48:02,495 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:02,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1767741828, now seen corresponding path program 4 times [2024-06-14 12:48:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:02,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381823301] [2024-06-14 12:48:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:02,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:03,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:03,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381823301] [2024-06-14 12:48:03,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381823301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:03,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:03,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:03,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736522307] [2024-06-14 12:48:03,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:03,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:03,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:03,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:03,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 145 transitions, 1714 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:03,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:03,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:03,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:03,746 INFO L124 PetriNetUnfolderBase]: 312/628 cut-off events. [2024-06-14 12:48:03,746 INFO L125 PetriNetUnfolderBase]: For 21741/21741 co-relation queries the response was YES. [2024-06-14 12:48:03,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4313 conditions, 628 events. 312/628 cut-off events. For 21741/21741 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3207 event pairs, 84 based on Foata normal form. 2/628 useless extension candidates. Maximal degree in co-relation 4239. Up to 545 conditions per place. [2024-06-14 12:48:03,750 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-06-14 12:48:03,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 2095 flow [2024-06-14 12:48:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:48:03,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:48:03,751 INFO L175 Difference]: Start difference. First operand has 160 places, 145 transitions, 1714 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:48:03,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 2095 flow [2024-06-14 12:48:03,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 158 transitions, 1981 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:03,788 INFO L231 Difference]: Finished difference. Result has 163 places, 148 transitions, 1696 flow [2024-06-14 12:48:03,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1696, PETRI_PLACES=163, PETRI_TRANSITIONS=148} [2024-06-14 12:48:03,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-14 12:48:03,789 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 148 transitions, 1696 flow [2024-06-14 12:48:03,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:03,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:03,789 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 12:48:03,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:48:03,789 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:03,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1757622498, now seen corresponding path program 5 times [2024-06-14 12:48:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:03,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834269635] [2024-06-14 12:48:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:03,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:04,784 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 12:48:04,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:04,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834269635] [2024-06-14 12:48:04,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834269635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:04,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:04,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:04,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152672374] [2024-06-14 12:48:04,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:04,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:04,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:04,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:04,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:04,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:04,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 148 transitions, 1696 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:04,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:04,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:04,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:05,165 INFO L124 PetriNetUnfolderBase]: 316/636 cut-off events. [2024-06-14 12:48:05,165 INFO L125 PetriNetUnfolderBase]: For 22599/22599 co-relation queries the response was YES. [2024-06-14 12:48:05,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4318 conditions, 636 events. 316/636 cut-off events. For 22599/22599 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3244 event pairs, 84 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 4242. Up to 541 conditions per place. [2024-06-14 12:48:05,169 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 135 selfloop transitions, 21 changer transitions 0/160 dead transitions. [2024-06-14 12:48:05,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 160 transitions, 2068 flow [2024-06-14 12:48:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:48:05,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:48:05,177 INFO L175 Difference]: Start difference. First operand has 163 places, 148 transitions, 1696 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:48:05,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 160 transitions, 2068 flow [2024-06-14 12:48:05,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 2009 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:05,224 INFO L231 Difference]: Finished difference. Result has 167 places, 149 transitions, 1723 flow [2024-06-14 12:48:05,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1723, PETRI_PLACES=167, PETRI_TRANSITIONS=149} [2024-06-14 12:48:05,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-14 12:48:05,224 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 149 transitions, 1723 flow [2024-06-14 12:48:05,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:05,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:05,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:05,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:48:05,226 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:05,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1414422916, now seen corresponding path program 6 times [2024-06-14 12:48:05,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:05,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061525603] [2024-06-14 12:48:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:06,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:06,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061525603] [2024-06-14 12:48:06,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061525603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:06,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:06,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:06,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445880404] [2024-06-14 12:48:06,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:06,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:06,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:06,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:06,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:06,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:06,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 149 transitions, 1723 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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 12:48:06,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:06,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:06,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:06,401 INFO L124 PetriNetUnfolderBase]: 336/682 cut-off events. [2024-06-14 12:48:06,401 INFO L125 PetriNetUnfolderBase]: For 31694/31694 co-relation queries the response was YES. [2024-06-14 12:48:06,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4603 conditions, 682 events. 336/682 cut-off events. For 31694/31694 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3552 event pairs, 44 based on Foata normal form. 12/691 useless extension candidates. Maximal degree in co-relation 4526. Up to 520 conditions per place. [2024-06-14 12:48:06,405 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 26 changer transitions 6/163 dead transitions. [2024-06-14 12:48:06,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 163 transitions, 2175 flow [2024-06-14 12:48:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:06,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 12:48:06,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-14 12:48:06,408 INFO L175 Difference]: Start difference. First operand has 167 places, 149 transitions, 1723 flow. Second operand 9 states and 124 transitions. [2024-06-14 12:48:06,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 163 transitions, 2175 flow [2024-06-14 12:48:06,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 163 transitions, 2099 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:06,449 INFO L231 Difference]: Finished difference. Result has 167 places, 148 transitions, 1722 flow [2024-06-14 12:48:06,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1649, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=167, PETRI_TRANSITIONS=148} [2024-06-14 12:48:06,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-14 12:48:06,450 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 148 transitions, 1722 flow [2024-06-14 12:48:06,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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 12:48:06,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:06,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:06,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:48:06,450 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:06,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:06,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1469867160, now seen corresponding path program 7 times [2024-06-14 12:48:06,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:06,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688131847] [2024-06-14 12:48:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:06,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:07,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:07,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688131847] [2024-06-14 12:48:07,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688131847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:07,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:07,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:07,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026121025] [2024-06-14 12:48:07,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:07,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:07,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:07,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:07,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:07,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 148 transitions, 1722 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:07,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:07,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:07,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:07,759 INFO L124 PetriNetUnfolderBase]: 321/659 cut-off events. [2024-06-14 12:48:07,759 INFO L125 PetriNetUnfolderBase]: For 22201/22201 co-relation queries the response was YES. [2024-06-14 12:48:07,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 659 events. 321/659 cut-off events. For 22201/22201 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3462 event pairs, 87 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4239. Up to 546 conditions per place. [2024-06-14 12:48:07,763 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 134 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-06-14 12:48:07,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 160 transitions, 2060 flow [2024-06-14 12:48:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:48:07,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:48:07,764 INFO L175 Difference]: Start difference. First operand has 167 places, 148 transitions, 1722 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:48:07,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 160 transitions, 2060 flow [2024-06-14 12:48:07,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 160 transitions, 1988 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:07,808 INFO L231 Difference]: Finished difference. Result has 171 places, 148 transitions, 1698 flow [2024-06-14 12:48:07,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1698, PETRI_PLACES=171, PETRI_TRANSITIONS=148} [2024-06-14 12:48:07,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-14 12:48:07,808 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 148 transitions, 1698 flow [2024-06-14 12:48:07,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:07,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:07,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:07,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:48:07,809 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:07,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:07,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1036543951, now seen corresponding path program 1 times [2024-06-14 12:48:07,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:07,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953738370] [2024-06-14 12:48:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:07,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:08,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:08,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953738370] [2024-06-14 12:48:08,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953738370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:08,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:08,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:08,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064240528] [2024-06-14 12:48:08,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:08,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:08,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:08,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:08,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:08,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:08,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 148 transitions, 1698 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:08,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:08,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:08,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:09,007 INFO L124 PetriNetUnfolderBase]: 342/702 cut-off events. [2024-06-14 12:48:09,007 INFO L125 PetriNetUnfolderBase]: For 22593/22593 co-relation queries the response was YES. [2024-06-14 12:48:09,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4437 conditions, 702 events. 342/702 cut-off events. For 22593/22593 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3711 event pairs, 38 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4358. Up to 581 conditions per place. [2024-06-14 12:48:09,011 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 19 changer transitions 0/173 dead transitions. [2024-06-14 12:48:09,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 173 transitions, 2132 flow [2024-06-14 12:48:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:48:09,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 12:48:09,018 INFO L175 Difference]: Start difference. First operand has 171 places, 148 transitions, 1698 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:48:09,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 173 transitions, 2132 flow [2024-06-14 12:48:09,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 173 transitions, 2039 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-06-14 12:48:09,058 INFO L231 Difference]: Finished difference. Result has 172 places, 156 transitions, 1718 flow [2024-06-14 12:48:09,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1718, PETRI_PLACES=172, PETRI_TRANSITIONS=156} [2024-06-14 12:48:09,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-14 12:48:09,059 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 156 transitions, 1718 flow [2024-06-14 12:48:09,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:09,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:09,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:09,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:48:09,059 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:09,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash -802953907, now seen corresponding path program 2 times [2024-06-14 12:48:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:09,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367885624] [2024-06-14 12:48:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:10,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:10,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367885624] [2024-06-14 12:48:10,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367885624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:10,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:10,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617416911] [2024-06-14 12:48:10,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:10,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:10,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:10,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:10,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:10,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:10,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 156 transitions, 1718 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:10,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:10,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:10,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:10,531 INFO L124 PetriNetUnfolderBase]: 352/720 cut-off events. [2024-06-14 12:48:10,531 INFO L125 PetriNetUnfolderBase]: For 23030/23030 co-relation queries the response was YES. [2024-06-14 12:48:10,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 720 events. 352/720 cut-off events. For 23030/23030 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3826 event pairs, 40 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 4401. Up to 613 conditions per place. [2024-06-14 12:48:10,535 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 21 changer transitions 0/175 dead transitions. [2024-06-14 12:48:10,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 2135 flow [2024-06-14 12:48:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:48:10,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:48:10,536 INFO L175 Difference]: Start difference. First operand has 172 places, 156 transitions, 1718 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:48:10,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 2135 flow [2024-06-14 12:48:10,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 175 transitions, 2105 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 12:48:10,577 INFO L231 Difference]: Finished difference. Result has 181 places, 161 transitions, 1789 flow [2024-06-14 12:48:10,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1789, PETRI_PLACES=181, PETRI_TRANSITIONS=161} [2024-06-14 12:48:10,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-14 12:48:10,577 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 161 transitions, 1789 flow [2024-06-14 12:48:10,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:10,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:10,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:10,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:48:10,578 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:10,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:10,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1776561237, now seen corresponding path program 3 times [2024-06-14 12:48:10,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:10,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79414842] [2024-06-14 12:48:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:10,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:11,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79414842] [2024-06-14 12:48:11,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79414842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:11,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:11,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:11,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485444133] [2024-06-14 12:48:11,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:11,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:11,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:11,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:11,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 161 transitions, 1789 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:11,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:11,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:11,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:11,850 INFO L124 PetriNetUnfolderBase]: 360/736 cut-off events. [2024-06-14 12:48:11,850 INFO L125 PetriNetUnfolderBase]: For 24024/24024 co-relation queries the response was YES. [2024-06-14 12:48:11,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4593 conditions, 736 events. 360/736 cut-off events. For 24024/24024 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3983 event pairs, 38 based on Foata normal form. 2/737 useless extension candidates. Maximal degree in co-relation 4510. Up to 624 conditions per place. [2024-06-14 12:48:11,854 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 20 changer transitions 0/178 dead transitions. [2024-06-14 12:48:11,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 178 transitions, 2198 flow [2024-06-14 12:48:11,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:48:11,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:48:11,856 INFO L175 Difference]: Start difference. First operand has 181 places, 161 transitions, 1789 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:48:11,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 178 transitions, 2198 flow [2024-06-14 12:48:11,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 178 transitions, 2148 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:48:11,903 INFO L231 Difference]: Finished difference. Result has 186 places, 163 transitions, 1812 flow [2024-06-14 12:48:11,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1812, PETRI_PLACES=186, PETRI_TRANSITIONS=163} [2024-06-14 12:48:11,903 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-14 12:48:11,903 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 163 transitions, 1812 flow [2024-06-14 12:48:11,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:11,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:11,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:11,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:48:11,903 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:11,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1521450155, now seen corresponding path program 4 times [2024-06-14 12:48:11,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:11,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510013747] [2024-06-14 12:48:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:12,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510013747] [2024-06-14 12:48:12,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510013747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:12,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:12,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:12,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301633543] [2024-06-14 12:48:12,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:12,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:12,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:12,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:12,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:12,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:12,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 163 transitions, 1812 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:12,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:12,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:12,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:13,228 INFO L124 PetriNetUnfolderBase]: 364/744 cut-off events. [2024-06-14 12:48:13,229 INFO L125 PetriNetUnfolderBase]: For 25177/25177 co-relation queries the response was YES. [2024-06-14 12:48:13,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 744 events. 364/744 cut-off events. For 25177/25177 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4039 event pairs, 54 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4576. Up to 650 conditions per place. [2024-06-14 12:48:13,233 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 157 selfloop transitions, 17 changer transitions 1/179 dead transitions. [2024-06-14 12:48:13,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 179 transitions, 2234 flow [2024-06-14 12:48:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:48:13,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:48:13,234 INFO L175 Difference]: Start difference. First operand has 186 places, 163 transitions, 1812 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:48:13,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 179 transitions, 2234 flow [2024-06-14 12:48:13,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 179 transitions, 2180 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:13,288 INFO L231 Difference]: Finished difference. Result has 191 places, 165 transitions, 1833 flow [2024-06-14 12:48:13,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1833, PETRI_PLACES=191, PETRI_TRANSITIONS=165} [2024-06-14 12:48:13,288 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-14 12:48:13,289 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 165 transitions, 1833 flow [2024-06-14 12:48:13,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:13,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:13,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:13,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:48:13,289 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:13,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1001854949, now seen corresponding path program 5 times [2024-06-14 12:48:13,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:13,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619029871] [2024-06-14 12:48:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:13,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:14,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:14,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619029871] [2024-06-14 12:48:14,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619029871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:14,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:14,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:14,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805440516] [2024-06-14 12:48:14,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:14,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:14,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:14,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:14,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:14,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 165 transitions, 1833 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:14,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:14,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:14,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:14,749 INFO L124 PetriNetUnfolderBase]: 360/732 cut-off events. [2024-06-14 12:48:14,749 INFO L125 PetriNetUnfolderBase]: For 25527/25527 co-relation queries the response was YES. [2024-06-14 12:48:14,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4573 conditions, 732 events. 360/732 cut-off events. For 25527/25527 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3952 event pairs, 48 based on Foata normal form. 2/733 useless extension candidates. Maximal degree in co-relation 4485. Up to 633 conditions per place. [2024-06-14 12:48:14,754 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 160 selfloop transitions, 17 changer transitions 0/181 dead transitions. [2024-06-14 12:48:14,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 181 transitions, 2248 flow [2024-06-14 12:48:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:48:14,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:48:14,755 INFO L175 Difference]: Start difference. First operand has 191 places, 165 transitions, 1833 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:48:14,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 181 transitions, 2248 flow [2024-06-14 12:48:14,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 181 transitions, 2188 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 12:48:14,807 INFO L231 Difference]: Finished difference. Result has 196 places, 167 transitions, 1844 flow [2024-06-14 12:48:14,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1844, PETRI_PLACES=196, PETRI_TRANSITIONS=167} [2024-06-14 12:48:14,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-14 12:48:14,808 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 167 transitions, 1844 flow [2024-06-14 12:48:14,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:14,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:14,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:14,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:48:14,808 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:14,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:14,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1322148365, now seen corresponding path program 6 times [2024-06-14 12:48:14,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:14,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89057188] [2024-06-14 12:48:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:14,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:16,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:16,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89057188] [2024-06-14 12:48:16,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89057188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:16,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:16,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:16,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709910282] [2024-06-14 12:48:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:16,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:16,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:16,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:16,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 167 transitions, 1844 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:16,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:16,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:16,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:16,422 INFO L124 PetriNetUnfolderBase]: 364/740 cut-off events. [2024-06-14 12:48:16,423 INFO L125 PetriNetUnfolderBase]: For 26433/26433 co-relation queries the response was YES. [2024-06-14 12:48:16,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4619 conditions, 740 events. 364/740 cut-off events. For 26433/26433 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4000 event pairs, 54 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 4529. Up to 640 conditions per place. [2024-06-14 12:48:16,427 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 157 selfloop transitions, 20 changer transitions 0/181 dead transitions. [2024-06-14 12:48:16,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 181 transitions, 2256 flow [2024-06-14 12:48:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:48:16,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:48:16,428 INFO L175 Difference]: Start difference. First operand has 196 places, 167 transitions, 1844 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:48:16,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 181 transitions, 2256 flow [2024-06-14 12:48:16,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 181 transitions, 2204 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:16,484 INFO L231 Difference]: Finished difference. Result has 199 places, 168 transitions, 1864 flow [2024-06-14 12:48:16,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1864, PETRI_PLACES=199, PETRI_TRANSITIONS=168} [2024-06-14 12:48:16,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-14 12:48:16,484 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 168 transitions, 1864 flow [2024-06-14 12:48:16,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:16,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:16,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:16,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:48:16,485 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:16,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash 18619471, now seen corresponding path program 1 times [2024-06-14 12:48:16,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010300746] [2024-06-14 12:48:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:16,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:17,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:17,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010300746] [2024-06-14 12:48:17,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010300746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:17,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:17,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:17,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442982088] [2024-06-14 12:48:17,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:17,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:17,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:17,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:17,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:17,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:17,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 168 transitions, 1864 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:17,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:17,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:17,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:18,117 INFO L124 PetriNetUnfolderBase]: 367/745 cut-off events. [2024-06-14 12:48:18,117 INFO L125 PetriNetUnfolderBase]: For 26415/26415 co-relation queries the response was YES. [2024-06-14 12:48:18,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 745 events. 367/745 cut-off events. For 26415/26415 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4019 event pairs, 54 based on Foata normal form. 1/745 useless extension candidates. Maximal degree in co-relation 4587. Up to 639 conditions per place. [2024-06-14 12:48:18,121 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 26 changer transitions 0/183 dead transitions. [2024-06-14 12:48:18,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 183 transitions, 2310 flow [2024-06-14 12:48:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:48:18,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:48:18,122 INFO L175 Difference]: Start difference. First operand has 199 places, 168 transitions, 1864 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:48:18,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 183 transitions, 2310 flow [2024-06-14 12:48:18,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 183 transitions, 2245 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:18,179 INFO L231 Difference]: Finished difference. Result has 202 places, 170 transitions, 1916 flow [2024-06-14 12:48:18,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1916, PETRI_PLACES=202, PETRI_TRANSITIONS=170} [2024-06-14 12:48:18,180 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-14 12:48:18,180 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 170 transitions, 1916 flow [2024-06-14 12:48:18,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:18,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:18,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:18,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:48:18,180 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:18,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1322142413, now seen corresponding path program 2 times [2024-06-14 12:48:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:18,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39589295] [2024-06-14 12:48:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39589295] [2024-06-14 12:48:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39589295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:19,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:19,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:19,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137844914] [2024-06-14 12:48:19,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:19,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:19,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:19,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 170 transitions, 1916 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:19,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:19,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:19,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:19,769 INFO L124 PetriNetUnfolderBase]: 365/742 cut-off events. [2024-06-14 12:48:19,769 INFO L125 PetriNetUnfolderBase]: For 25908/25908 co-relation queries the response was YES. [2024-06-14 12:48:19,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4586 conditions, 742 events. 365/742 cut-off events. For 25908/25908 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4025 event pairs, 54 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 4494. Up to 627 conditions per place. [2024-06-14 12:48:19,773 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 148 selfloop transitions, 31 changer transitions 0/183 dead transitions. [2024-06-14 12:48:19,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 183 transitions, 2306 flow [2024-06-14 12:48:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:48:19,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-14 12:48:19,774 INFO L175 Difference]: Start difference. First operand has 202 places, 170 transitions, 1916 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:48:19,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 183 transitions, 2306 flow [2024-06-14 12:48:19,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 183 transitions, 2183 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:19,831 INFO L231 Difference]: Finished difference. Result has 204 places, 170 transitions, 1860 flow [2024-06-14 12:48:19,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1860, PETRI_PLACES=204, PETRI_TRANSITIONS=170} [2024-06-14 12:48:19,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-14 12:48:19,832 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 170 transitions, 1860 flow [2024-06-14 12:48:19,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:19,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:19,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:19,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:48:19,833 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:19,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:19,833 INFO L85 PathProgramCache]: Analyzing trace with hash 469135317, now seen corresponding path program 7 times [2024-06-14 12:48:19,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:19,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971622269] [2024-06-14 12:48:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:19,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:20,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:20,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971622269] [2024-06-14 12:48:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971622269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:20,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:20,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:20,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932753129] [2024-06-14 12:48:20,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:20,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:20,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:20,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:20,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:20,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:20,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 170 transitions, 1860 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:20,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:20,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:20,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:21,102 INFO L124 PetriNetUnfolderBase]: 378/771 cut-off events. [2024-06-14 12:48:21,103 INFO L125 PetriNetUnfolderBase]: For 27800/27800 co-relation queries the response was YES. [2024-06-14 12:48:21,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 771 events. 378/771 cut-off events. For 27800/27800 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4242 event pairs, 50 based on Foata normal form. 2/772 useless extension candidates. Maximal degree in co-relation 4581. Up to 648 conditions per place. [2024-06-14 12:48:21,107 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 167 selfloop transitions, 20 changer transitions 0/191 dead transitions. [2024-06-14 12:48:21,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 191 transitions, 2320 flow [2024-06-14 12:48:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:21,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:48:21,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 12:48:21,108 INFO L175 Difference]: Start difference. First operand has 204 places, 170 transitions, 1860 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:48:21,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 191 transitions, 2320 flow [2024-06-14 12:48:21,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 191 transitions, 2234 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 12:48:21,176 INFO L231 Difference]: Finished difference. Result has 206 places, 173 transitions, 1868 flow [2024-06-14 12:48:21,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1868, PETRI_PLACES=206, PETRI_TRANSITIONS=173} [2024-06-14 12:48:21,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-14 12:48:21,177 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 173 transitions, 1868 flow [2024-06-14 12:48:21,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:21,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:21,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:21,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:48:21,177 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:21,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash 114760927, now seen corresponding path program 8 times [2024-06-14 12:48:21,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:21,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785683947] [2024-06-14 12:48:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:22,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:22,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785683947] [2024-06-14 12:48:22,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785683947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:22,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:22,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:22,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738202473] [2024-06-14 12:48:22,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:22,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:22,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:22,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:22,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:22,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:22,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 173 transitions, 1868 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:22,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:22,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:22,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:22,460 INFO L124 PetriNetUnfolderBase]: 388/789 cut-off events. [2024-06-14 12:48:22,461 INFO L125 PetriNetUnfolderBase]: For 29121/29121 co-relation queries the response was YES. [2024-06-14 12:48:22,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4803 conditions, 789 events. 388/789 cut-off events. For 29121/29121 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4369 event pairs, 59 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 4707. Up to 680 conditions per place. [2024-06-14 12:48:22,466 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 167 selfloop transitions, 22 changer transitions 0/193 dead transitions. [2024-06-14 12:48:22,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 193 transitions, 2343 flow [2024-06-14 12:48:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:48:22,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:48:22,467 INFO L175 Difference]: Start difference. First operand has 206 places, 173 transitions, 1868 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:48:22,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 193 transitions, 2343 flow [2024-06-14 12:48:22,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 193 transitions, 2271 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 12:48:22,535 INFO L231 Difference]: Finished difference. Result has 212 places, 178 transitions, 1919 flow [2024-06-14 12:48:22,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1919, PETRI_PLACES=212, PETRI_TRANSITIONS=178} [2024-06-14 12:48:22,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-14 12:48:22,536 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 178 transitions, 1919 flow [2024-06-14 12:48:22,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:22,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:22,536 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 12:48:22,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:48:22,536 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:22,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:22,537 INFO L85 PathProgramCache]: Analyzing trace with hash -622152367, now seen corresponding path program 9 times [2024-06-14 12:48:22,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:22,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979130463] [2024-06-14 12:48:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:23,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:23,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979130463] [2024-06-14 12:48:23,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979130463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:23,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:23,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:23,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834037426] [2024-06-14 12:48:23,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:23,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:23,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:23,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:23,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 178 transitions, 1919 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:23,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:23,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:23,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:23,869 INFO L124 PetriNetUnfolderBase]: 396/805 cut-off events. [2024-06-14 12:48:23,869 INFO L125 PetriNetUnfolderBase]: For 30190/30190 co-relation queries the response was YES. [2024-06-14 12:48:23,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4897 conditions, 805 events. 396/805 cut-off events. For 30190/30190 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4495 event pairs, 60 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 4798. Up to 691 conditions per place. [2024-06-14 12:48:23,874 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 171 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2024-06-14 12:48:23,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 196 transitions, 2380 flow [2024-06-14 12:48:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:48:23,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:48:23,875 INFO L175 Difference]: Start difference. First operand has 212 places, 178 transitions, 1919 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:48:23,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 196 transitions, 2380 flow [2024-06-14 12:48:23,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 196 transitions, 2308 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-14 12:48:23,944 INFO L231 Difference]: Finished difference. Result has 217 places, 180 transitions, 1936 flow [2024-06-14 12:48:23,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1936, PETRI_PLACES=217, PETRI_TRANSITIONS=180} [2024-06-14 12:48:23,945 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-14 12:48:23,945 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 180 transitions, 1936 flow [2024-06-14 12:48:23,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:23,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:23,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:23,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:48:23,945 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:23,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1868861579, now seen corresponding path program 10 times [2024-06-14 12:48:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:23,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615199976] [2024-06-14 12:48:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:23,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:24,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:24,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615199976] [2024-06-14 12:48:24,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615199976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:24,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:24,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:24,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928119355] [2024-06-14 12:48:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:24,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:24,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:24,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:24,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:24,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 180 transitions, 1936 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:24,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:24,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:24,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:25,142 INFO L124 PetriNetUnfolderBase]: 409/832 cut-off events. [2024-06-14 12:48:25,142 INFO L125 PetriNetUnfolderBase]: For 31310/31310 co-relation queries the response was YES. [2024-06-14 12:48:25,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 832 events. 409/832 cut-off events. For 31310/31310 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4674 event pairs, 32 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 4921. Up to 674 conditions per place. [2024-06-14 12:48:25,147 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 23 changer transitions 0/201 dead transitions. [2024-06-14 12:48:25,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 201 transitions, 2424 flow [2024-06-14 12:48:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:48:25,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:48:25,148 INFO L175 Difference]: Start difference. First operand has 217 places, 180 transitions, 1936 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:48:25,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 201 transitions, 2424 flow [2024-06-14 12:48:25,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 201 transitions, 2354 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:25,218 INFO L231 Difference]: Finished difference. Result has 221 places, 183 transitions, 1972 flow [2024-06-14 12:48:25,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1972, PETRI_PLACES=221, PETRI_TRANSITIONS=183} [2024-06-14 12:48:25,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-14 12:48:25,219 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 183 transitions, 1972 flow [2024-06-14 12:48:25,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:25,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:25,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:25,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:48:25,219 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:25,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:25,220 INFO L85 PathProgramCache]: Analyzing trace with hash 92034897, now seen corresponding path program 11 times [2024-06-14 12:48:25,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:25,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359369298] [2024-06-14 12:48:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:25,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:26,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:26,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359369298] [2024-06-14 12:48:26,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359369298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:26,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:26,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:26,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669577351] [2024-06-14 12:48:26,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:26,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:26,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:26,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:26,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 183 transitions, 1972 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:26,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:26,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:26,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:26,420 INFO L124 PetriNetUnfolderBase]: 413/840 cut-off events. [2024-06-14 12:48:26,420 INFO L125 PetriNetUnfolderBase]: For 32547/32547 co-relation queries the response was YES. [2024-06-14 12:48:26,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5098 conditions, 840 events. 413/840 cut-off events. For 32547/32547 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4729 event pairs, 36 based on Foata normal form. 2/841 useless extension candidates. Maximal degree in co-relation 4995. Up to 634 conditions per place. [2024-06-14 12:48:26,426 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 167 selfloop transitions, 28 changer transitions 0/199 dead transitions. [2024-06-14 12:48:26,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 199 transitions, 2434 flow [2024-06-14 12:48:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:48:26,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 12:48:26,427 INFO L175 Difference]: Start difference. First operand has 221 places, 183 transitions, 1972 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:48:26,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 199 transitions, 2434 flow [2024-06-14 12:48:26,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 199 transitions, 2337 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:26,493 INFO L231 Difference]: Finished difference. Result has 222 places, 184 transitions, 1979 flow [2024-06-14 12:48:26,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1979, PETRI_PLACES=222, PETRI_TRANSITIONS=184} [2024-06-14 12:48:26,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-14 12:48:26,493 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 184 transitions, 1979 flow [2024-06-14 12:48:26,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:26,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:26,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:26,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:48:26,494 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:26,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:26,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1151777299, now seen corresponding path program 12 times [2024-06-14 12:48:26,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:26,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742379348] [2024-06-14 12:48:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:26,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742379348] [2024-06-14 12:48:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742379348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:27,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:27,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58623954] [2024-06-14 12:48:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:27,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:27,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 184 transitions, 1979 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:27,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:27,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:27,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:27,741 INFO L124 PetriNetUnfolderBase]: 417/848 cut-off events. [2024-06-14 12:48:27,741 INFO L125 PetriNetUnfolderBase]: For 33788/33788 co-relation queries the response was YES. [2024-06-14 12:48:27,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 848 events. 417/848 cut-off events. For 33788/33788 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4800 event pairs, 62 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 5053. Up to 700 conditions per place. [2024-06-14 12:48:27,746 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 167 selfloop transitions, 28 changer transitions 0/199 dead transitions. [2024-06-14 12:48:27,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 199 transitions, 2441 flow [2024-06-14 12:48:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:48:27,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-14 12:48:27,748 INFO L175 Difference]: Start difference. First operand has 222 places, 184 transitions, 1979 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:48:27,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 199 transitions, 2441 flow [2024-06-14 12:48:27,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 199 transitions, 2347 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:27,824 INFO L231 Difference]: Finished difference. Result has 224 places, 185 transitions, 1989 flow [2024-06-14 12:48:27,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1989, PETRI_PLACES=224, PETRI_TRANSITIONS=185} [2024-06-14 12:48:27,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-14 12:48:27,825 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 185 transitions, 1989 flow [2024-06-14 12:48:27,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:27,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:27,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:27,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:48:27,826 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:27,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:27,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1151781019, now seen corresponding path program 13 times [2024-06-14 12:48:27,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:27,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582128786] [2024-06-14 12:48:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:27,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:28,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582128786] [2024-06-14 12:48:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582128786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:28,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:28,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:28,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986284024] [2024-06-14 12:48:28,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:28,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:28,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:28,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:28,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:28,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:28,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 185 transitions, 1989 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:28,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:28,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:28,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:29,229 INFO L124 PetriNetUnfolderBase]: 421/856 cut-off events. [2024-06-14 12:48:29,230 INFO L125 PetriNetUnfolderBase]: For 31408/31408 co-relation queries the response was YES. [2024-06-14 12:48:29,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5138 conditions, 856 events. 421/856 cut-off events. For 31408/31408 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4859 event pairs, 69 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 5035. Up to 723 conditions per place. [2024-06-14 12:48:29,235 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 164 selfloop transitions, 31 changer transitions 0/199 dead transitions. [2024-06-14 12:48:29,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 199 transitions, 2445 flow [2024-06-14 12:48:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:48:29,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-14 12:48:29,237 INFO L175 Difference]: Start difference. First operand has 224 places, 185 transitions, 1989 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:48:29,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 199 transitions, 2445 flow [2024-06-14 12:48:29,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 199 transitions, 2357 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:29,312 INFO L231 Difference]: Finished difference. Result has 226 places, 186 transitions, 2007 flow [2024-06-14 12:48:29,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2007, PETRI_PLACES=226, PETRI_TRANSITIONS=186} [2024-06-14 12:48:29,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-14 12:48:29,313 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 186 transitions, 2007 flow [2024-06-14 12:48:29,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:29,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:29,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:29,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:48:29,313 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:29,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash 436346523, now seen corresponding path program 14 times [2024-06-14 12:48:29,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:29,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433036285] [2024-06-14 12:48:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:29,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:30,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:30,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433036285] [2024-06-14 12:48:30,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433036285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:30,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:30,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:30,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092961249] [2024-06-14 12:48:30,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:30,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:30,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:30,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:30,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:30,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 186 transitions, 2007 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:30,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:30,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:30,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:30,651 INFO L124 PetriNetUnfolderBase]: 425/864 cut-off events. [2024-06-14 12:48:30,651 INFO L125 PetriNetUnfolderBase]: For 30409/30409 co-relation queries the response was YES. [2024-06-14 12:48:30,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5156 conditions, 864 events. 425/864 cut-off events. For 30409/30409 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4908 event pairs, 77 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 5052. Up to 741 conditions per place. [2024-06-14 12:48:30,656 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 166 selfloop transitions, 28 changer transitions 0/198 dead transitions. [2024-06-14 12:48:30,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 198 transitions, 2453 flow [2024-06-14 12:48:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:48:30,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 12:48:30,657 INFO L175 Difference]: Start difference. First operand has 226 places, 186 transitions, 2007 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:48:30,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 198 transitions, 2453 flow [2024-06-14 12:48:30,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 198 transitions, 2361 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:30,727 INFO L231 Difference]: Finished difference. Result has 228 places, 187 transitions, 2011 flow [2024-06-14 12:48:30,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2011, PETRI_PLACES=228, PETRI_TRANSITIONS=187} [2024-06-14 12:48:30,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-14 12:48:30,727 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 187 transitions, 2011 flow [2024-06-14 12:48:30,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:30,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:30,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:30,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:48:30,727 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:30,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1270830001, now seen corresponding path program 15 times [2024-06-14 12:48:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:30,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771041856] [2024-06-14 12:48:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:31,664 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 12:48:31,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:31,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771041856] [2024-06-14 12:48:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771041856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:31,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:31,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37576006] [2024-06-14 12:48:31,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:31,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:31,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 187 transitions, 2011 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:31,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:31,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:31,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:32,022 INFO L124 PetriNetUnfolderBase]: 429/872 cut-off events. [2024-06-14 12:48:32,023 INFO L125 PetriNetUnfolderBase]: For 29215/29215 co-relation queries the response was YES. [2024-06-14 12:48:32,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5153 conditions, 872 events. 429/872 cut-off events. For 29215/29215 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4989 event pairs, 79 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 5048. Up to 761 conditions per place. [2024-06-14 12:48:32,029 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 173 selfloop transitions, 22 changer transitions 1/200 dead transitions. [2024-06-14 12:48:32,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 200 transitions, 2473 flow [2024-06-14 12:48:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:48:32,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-14 12:48:32,030 INFO L175 Difference]: Start difference. First operand has 228 places, 187 transitions, 2011 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:48:32,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 200 transitions, 2473 flow [2024-06-14 12:48:32,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 200 transitions, 2389 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:32,103 INFO L231 Difference]: Finished difference. Result has 231 places, 188 transitions, 2017 flow [2024-06-14 12:48:32,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2017, PETRI_PLACES=231, PETRI_TRANSITIONS=188} [2024-06-14 12:48:32,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-14 12:48:32,104 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 188 transitions, 2017 flow [2024-06-14 12:48:32,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:32,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:32,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:32,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:48:32,104 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:32,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash 430836273, now seen corresponding path program 16 times [2024-06-14 12:48:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:32,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7629654] [2024-06-14 12:48:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:32,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:33,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:33,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7629654] [2024-06-14 12:48:33,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7629654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:33,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:33,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:33,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839039264] [2024-06-14 12:48:33,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:33,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:33,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:33,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:33,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 188 transitions, 2017 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:33,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:33,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:33,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:33,468 INFO L124 PetriNetUnfolderBase]: 421/852 cut-off events. [2024-06-14 12:48:33,468 INFO L125 PetriNetUnfolderBase]: For 28561/28561 co-relation queries the response was YES. [2024-06-14 12:48:33,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5017 conditions, 852 events. 421/852 cut-off events. For 28561/28561 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4824 event pairs, 71 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 4910. Up to 731 conditions per place. [2024-06-14 12:48:33,473 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 175 selfloop transitions, 22 changer transitions 0/201 dead transitions. [2024-06-14 12:48:33,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 201 transitions, 2469 flow [2024-06-14 12:48:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:48:33,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-14 12:48:33,474 INFO L175 Difference]: Start difference. First operand has 231 places, 188 transitions, 2017 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:48:33,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 201 transitions, 2469 flow [2024-06-14 12:48:33,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 201 transitions, 2391 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 12:48:33,538 INFO L231 Difference]: Finished difference. Result has 234 places, 189 transitions, 2021 flow [2024-06-14 12:48:33,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2021, PETRI_PLACES=234, PETRI_TRANSITIONS=189} [2024-06-14 12:48:33,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-14 12:48:33,538 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 189 transitions, 2021 flow [2024-06-14 12:48:33,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:33,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:33,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:33,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:48:33,539 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:33,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:33,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1470137743, now seen corresponding path program 3 times [2024-06-14 12:48:33,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:33,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594244719] [2024-06-14 12:48:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:34,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:34,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594244719] [2024-06-14 12:48:34,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594244719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:34,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:34,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:34,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349237379] [2024-06-14 12:48:34,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:34,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:34,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:34,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:34,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:35,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:35,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 189 transitions, 2021 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:35,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:35,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:35,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:35,524 INFO L124 PetriNetUnfolderBase]: 424/857 cut-off events. [2024-06-14 12:48:35,524 INFO L125 PetriNetUnfolderBase]: For 27186/27186 co-relation queries the response was YES. [2024-06-14 12:48:35,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5024 conditions, 857 events. 424/857 cut-off events. For 27186/27186 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4874 event pairs, 75 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 4916. Up to 722 conditions per place. [2024-06-14 12:48:35,530 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 40 changer transitions 0/202 dead transitions. [2024-06-14 12:48:35,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 202 transitions, 2499 flow [2024-06-14 12:48:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:48:35,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:48:35,531 INFO L175 Difference]: Start difference. First operand has 234 places, 189 transitions, 2021 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:48:35,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 202 transitions, 2499 flow [2024-06-14 12:48:35,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 202 transitions, 2431 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:35,597 INFO L231 Difference]: Finished difference. Result has 237 places, 191 transitions, 2101 flow [2024-06-14 12:48:35,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2101, PETRI_PLACES=237, PETRI_TRANSITIONS=191} [2024-06-14 12:48:35,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 12:48:35,598 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 191 transitions, 2101 flow [2024-06-14 12:48:35,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:35,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:35,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:35,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:48:35,599 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:35,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2075315051, now seen corresponding path program 4 times [2024-06-14 12:48:35,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:35,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157232074] [2024-06-14 12:48:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:37,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157232074] [2024-06-14 12:48:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157232074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:37,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:37,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:37,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125066516] [2024-06-14 12:48:37,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:37,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:37,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:37,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 191 transitions, 2101 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:37,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:37,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:37,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:37,558 INFO L124 PetriNetUnfolderBase]: 422/854 cut-off events. [2024-06-14 12:48:37,559 INFO L125 PetriNetUnfolderBase]: For 25708/25708 co-relation queries the response was YES. [2024-06-14 12:48:37,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4937 conditions, 854 events. 422/854 cut-off events. For 25708/25708 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4854 event pairs, 75 based on Foata normal form. 1/854 useless extension candidates. Maximal degree in co-relation 4828. Up to 719 conditions per place. [2024-06-14 12:48:37,564 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 40 changer transitions 0/202 dead transitions. [2024-06-14 12:48:37,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 202 transitions, 2523 flow [2024-06-14 12:48:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:48:37,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:48:37,565 INFO L175 Difference]: Start difference. First operand has 237 places, 191 transitions, 2101 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:48:37,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 202 transitions, 2523 flow [2024-06-14 12:48:37,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 202 transitions, 2366 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:37,638 INFO L231 Difference]: Finished difference. Result has 238 places, 191 transitions, 2032 flow [2024-06-14 12:48:37,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2032, PETRI_PLACES=238, PETRI_TRANSITIONS=191} [2024-06-14 12:48:37,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-14 12:48:37,638 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 191 transitions, 2032 flow [2024-06-14 12:48:37,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:37,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:37,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:37,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:48:37,639 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:37,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:37,639 INFO L85 PathProgramCache]: Analyzing trace with hash 778783213, now seen corresponding path program 17 times [2024-06-14 12:48:37,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:37,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786486559] [2024-06-14 12:48:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:37,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:38,659 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 12:48:38,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:38,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786486559] [2024-06-14 12:48:38,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786486559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:38,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:38,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:38,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019957546] [2024-06-14 12:48:38,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:38,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:38,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:38,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:38,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:38,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:38,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 191 transitions, 2032 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:38,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:38,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:38,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:38,998 INFO L124 PetriNetUnfolderBase]: 426/860 cut-off events. [2024-06-14 12:48:38,999 INFO L125 PetriNetUnfolderBase]: For 26675/26675 co-relation queries the response was YES. [2024-06-14 12:48:39,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4933 conditions, 860 events. 426/860 cut-off events. For 26675/26675 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4916 event pairs, 78 based on Foata normal form. 2/858 useless extension candidates. Maximal degree in co-relation 4824. Up to 718 conditions per place. [2024-06-14 12:48:39,004 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 160 selfloop transitions, 37 changer transitions 0/201 dead transitions. [2024-06-14 12:48:39,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 201 transitions, 2474 flow [2024-06-14 12:48:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:48:39,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 12:48:39,005 INFO L175 Difference]: Start difference. First operand has 238 places, 191 transitions, 2032 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:48:39,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 201 transitions, 2474 flow [2024-06-14 12:48:39,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 201 transitions, 2365 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:39,075 INFO L231 Difference]: Finished difference. Result has 238 places, 192 transitions, 2031 flow [2024-06-14 12:48:39,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2031, PETRI_PLACES=238, PETRI_TRANSITIONS=192} [2024-06-14 12:48:39,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-14 12:48:39,075 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 192 transitions, 2031 flow [2024-06-14 12:48:39,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:39,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:39,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:39,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:48:39,075 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:39,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:39,076 INFO L85 PathProgramCache]: Analyzing trace with hash -905071025, now seen corresponding path program 18 times [2024-06-14 12:48:39,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:39,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586386940] [2024-06-14 12:48:39,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:39,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:40,113 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 12:48:40,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:40,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586386940] [2024-06-14 12:48:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586386940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:40,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:40,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188218514] [2024-06-14 12:48:40,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:40,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:40,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:40,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:40,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:40,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 192 transitions, 2031 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:40,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:40,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:40,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:40,461 INFO L124 PetriNetUnfolderBase]: 430/868 cut-off events. [2024-06-14 12:48:40,461 INFO L125 PetriNetUnfolderBase]: For 27112/27112 co-relation queries the response was YES. [2024-06-14 12:48:40,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4990 conditions, 868 events. 430/868 cut-off events. For 27112/27112 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4948 event pairs, 78 based on Foata normal form. 2/867 useless extension candidates. Maximal degree in co-relation 4881. Up to 753 conditions per place. [2024-06-14 12:48:40,466 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 173 selfloop transitions, 25 changer transitions 0/202 dead transitions. [2024-06-14 12:48:40,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 202 transitions, 2477 flow [2024-06-14 12:48:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:48:40,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 12:48:40,467 INFO L175 Difference]: Start difference. First operand has 238 places, 192 transitions, 2031 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:48:40,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 202 transitions, 2477 flow [2024-06-14 12:48:40,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 202 transitions, 2379 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:40,528 INFO L231 Difference]: Finished difference. Result has 240 places, 193 transitions, 2019 flow [2024-06-14 12:48:40,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2019, PETRI_PLACES=240, PETRI_TRANSITIONS=193} [2024-06-14 12:48:40,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-14 12:48:40,528 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 193 transitions, 2019 flow [2024-06-14 12:48:40,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:40,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:40,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:40,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:48:40,529 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:40,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:40,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1104372815, now seen corresponding path program 19 times [2024-06-14 12:48:40,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:40,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421935668] [2024-06-14 12:48:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:40,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:41,490 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 12:48:41,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:41,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421935668] [2024-06-14 12:48:41,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421935668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:41,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:41,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:41,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389653942] [2024-06-14 12:48:41,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:41,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:41,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:41,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:41,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 193 transitions, 2019 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:41,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:41,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:41,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:41,847 INFO L124 PetriNetUnfolderBase]: 434/876 cut-off events. [2024-06-14 12:48:41,848 INFO L125 PetriNetUnfolderBase]: For 28040/28040 co-relation queries the response was YES. [2024-06-14 12:48:41,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 876 events. 434/876 cut-off events. For 28040/28040 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5011 event pairs, 80 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 4909. Up to 767 conditions per place. [2024-06-14 12:48:41,854 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 177 selfloop transitions, 22 changer transitions 1/204 dead transitions. [2024-06-14 12:48:41,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 204 transitions, 2482 flow [2024-06-14 12:48:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:48:41,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-14 12:48:41,855 INFO L175 Difference]: Start difference. First operand has 240 places, 193 transitions, 2019 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:48:41,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 204 transitions, 2482 flow [2024-06-14 12:48:41,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 204 transitions, 2404 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:41,933 INFO L231 Difference]: Finished difference. Result has 243 places, 194 transitions, 2029 flow [2024-06-14 12:48:41,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2029, PETRI_PLACES=243, PETRI_TRANSITIONS=194} [2024-06-14 12:48:41,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-14 12:48:41,933 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 194 transitions, 2029 flow [2024-06-14 12:48:41,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:41,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:41,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:41,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:48:41,934 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:41,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:41,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1104520685, now seen corresponding path program 20 times [2024-06-14 12:48:41,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:41,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615017396] [2024-06-14 12:48:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:41,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:42,910 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 12:48:42,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:42,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615017396] [2024-06-14 12:48:42,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615017396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:42,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:42,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:48:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384933419] [2024-06-14 12:48:42,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:42,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:48:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:48:42,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:48:42,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:42,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 194 transitions, 2029 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:42,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:42,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:42,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:43,275 INFO L124 PetriNetUnfolderBase]: 419/843 cut-off events. [2024-06-14 12:48:43,275 INFO L125 PetriNetUnfolderBase]: For 25214/25214 co-relation queries the response was YES. [2024-06-14 12:48:43,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4689 conditions, 843 events. 419/843 cut-off events. For 25214/25214 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4793 event pairs, 73 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 4577. Up to 729 conditions per place. [2024-06-14 12:48:43,280 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 178 selfloop transitions, 22 changer transitions 0/204 dead transitions. [2024-06-14 12:48:43,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 204 transitions, 2451 flow [2024-06-14 12:48:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:48:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:48:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:48:43,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-14 12:48:43,281 INFO L175 Difference]: Start difference. First operand has 243 places, 194 transitions, 2029 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:48:43,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 204 transitions, 2451 flow [2024-06-14 12:48:43,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 204 transitions, 2369 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 12:48:43,355 INFO L231 Difference]: Finished difference. Result has 246 places, 194 transitions, 1995 flow [2024-06-14 12:48:43,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1995, PETRI_PLACES=246, PETRI_TRANSITIONS=194} [2024-06-14 12:48:43,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-14 12:48:43,356 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 194 transitions, 1995 flow [2024-06-14 12:48:43,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:43,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:43,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:43,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:48:43,357 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:43,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash -905065073, now seen corresponding path program 5 times [2024-06-14 12:48:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:43,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531292945] [2024-06-14 12:48:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531292945] [2024-06-14 12:48:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531292945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:44,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:44,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:44,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578390822] [2024-06-14 12:48:44,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:44,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:44,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:44,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 194 transitions, 1995 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:44,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:44,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:44,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:45,213 INFO L124 PetriNetUnfolderBase]: 422/846 cut-off events. [2024-06-14 12:48:45,213 INFO L125 PetriNetUnfolderBase]: For 24379/24379 co-relation queries the response was YES. [2024-06-14 12:48:45,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 846 events. 422/846 cut-off events. For 24379/24379 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4820 event pairs, 64 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 4571. Up to 702 conditions per place. [2024-06-14 12:48:45,217 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 40 changer transitions 0/205 dead transitions. [2024-06-14 12:48:45,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 205 transitions, 2469 flow [2024-06-14 12:48:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:48:45,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 12:48:45,219 INFO L175 Difference]: Start difference. First operand has 246 places, 194 transitions, 1995 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:48:45,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 205 transitions, 2469 flow [2024-06-14 12:48:45,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 205 transitions, 2322 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:45,296 INFO L231 Difference]: Finished difference. Result has 247 places, 196 transitions, 1989 flow [2024-06-14 12:48:45,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1989, PETRI_PLACES=247, PETRI_TRANSITIONS=196} [2024-06-14 12:48:45,297 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-14 12:48:45,297 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 196 transitions, 1989 flow [2024-06-14 12:48:45,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:45,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:45,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:45,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:48:45,298 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:45,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:45,298 INFO L85 PathProgramCache]: Analyzing trace with hash -640509687, now seen corresponding path program 6 times [2024-06-14 12:48:45,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:45,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038274145] [2024-06-14 12:48:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:45,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:46,718 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 12:48:46,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:46,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038274145] [2024-06-14 12:48:46,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038274145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:46,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:46,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:46,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118292256] [2024-06-14 12:48:46,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:46,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:46,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:46,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:46,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:46,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 196 transitions, 1989 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:46,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:46,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:46,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:47,198 INFO L124 PetriNetUnfolderBase]: 420/847 cut-off events. [2024-06-14 12:48:47,199 INFO L125 PetriNetUnfolderBase]: For 23306/23306 co-relation queries the response was YES. [2024-06-14 12:48:47,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 847 events. 420/847 cut-off events. For 23306/23306 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4858 event pairs, 124 based on Foata normal form. 1/846 useless extension candidates. Maximal degree in co-relation 4386. Up to 759 conditions per place. [2024-06-14 12:48:47,204 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 17 changer transitions 0/205 dead transitions. [2024-06-14 12:48:47,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 205 transitions, 2411 flow [2024-06-14 12:48:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:48:47,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:48:47,205 INFO L175 Difference]: Start difference. First operand has 247 places, 196 transitions, 1989 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:48:47,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 205 transitions, 2411 flow [2024-06-14 12:48:47,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 205 transitions, 2229 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:47,272 INFO L231 Difference]: Finished difference. Result has 249 places, 196 transitions, 1846 flow [2024-06-14 12:48:47,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1846, PETRI_PLACES=249, PETRI_TRANSITIONS=196} [2024-06-14 12:48:47,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-14 12:48:47,273 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 196 transitions, 1846 flow [2024-06-14 12:48:47,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:47,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:47,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:47,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:48:47,273 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:47,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:47,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1896911823, now seen corresponding path program 7 times [2024-06-14 12:48:47,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:47,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936394167] [2024-06-14 12:48:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:47,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:48,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:48,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936394167] [2024-06-14 12:48:48,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936394167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:48,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:48,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:48,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614494408] [2024-06-14 12:48:48,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:48,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:48,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:48,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:48,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:48,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:48,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 196 transitions, 1846 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:48,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:48,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:48,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:48,882 INFO L124 PetriNetUnfolderBase]: 418/842 cut-off events. [2024-06-14 12:48:48,882 INFO L125 PetriNetUnfolderBase]: For 21767/21767 co-relation queries the response was YES. [2024-06-14 12:48:48,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4291 conditions, 842 events. 418/842 cut-off events. For 21767/21767 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4805 event pairs, 75 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 4177. Up to 721 conditions per place. [2024-06-14 12:48:48,886 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2024-06-14 12:48:48,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 205 transitions, 2268 flow [2024-06-14 12:48:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:48:48,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:48:48,887 INFO L175 Difference]: Start difference. First operand has 249 places, 196 transitions, 1846 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:48:48,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 205 transitions, 2268 flow [2024-06-14 12:48:48,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 205 transitions, 2184 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:48,960 INFO L231 Difference]: Finished difference. Result has 250 places, 196 transitions, 1829 flow [2024-06-14 12:48:48,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1829, PETRI_PLACES=250, PETRI_TRANSITIONS=196} [2024-06-14 12:48:48,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-14 12:48:48,961 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 196 transitions, 1829 flow [2024-06-14 12:48:48,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:48,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:48,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:48,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:48:48,961 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:48,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1624244925, now seen corresponding path program 8 times [2024-06-14 12:48:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:48,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112151946] [2024-06-14 12:48:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:48,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:50,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112151946] [2024-06-14 12:48:50,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112151946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:50,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:50,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:50,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400628408] [2024-06-14 12:48:50,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:50,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:50,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:50,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:50,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:50,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 196 transitions, 1829 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:50,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:50,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:50,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:50,686 INFO L124 PetriNetUnfolderBase]: 416/839 cut-off events. [2024-06-14 12:48:50,686 INFO L125 PetriNetUnfolderBase]: For 20639/20639 co-relation queries the response was YES. [2024-06-14 12:48:50,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 839 events. 416/839 cut-off events. For 20639/20639 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4805 event pairs, 75 based on Foata normal form. 1/837 useless extension candidates. Maximal degree in co-relation 4091. Up to 646 conditions per place. [2024-06-14 12:48:50,691 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 60 changer transitions 0/207 dead transitions. [2024-06-14 12:48:50,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 207 transitions, 2371 flow [2024-06-14 12:48:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:48:50,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-14 12:48:50,692 INFO L175 Difference]: Start difference. First operand has 250 places, 196 transitions, 1829 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:48:50,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 207 transitions, 2371 flow [2024-06-14 12:48:50,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 207 transitions, 2237 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-14 12:48:50,762 INFO L231 Difference]: Finished difference. Result has 251 places, 196 transitions, 1820 flow [2024-06-14 12:48:50,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1820, PETRI_PLACES=251, PETRI_TRANSITIONS=196} [2024-06-14 12:48:50,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-14 12:48:50,762 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 196 transitions, 1820 flow [2024-06-14 12:48:50,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:50,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:50,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:50,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:48:50,763 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:50,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash -889860357, now seen corresponding path program 9 times [2024-06-14 12:48:50,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:50,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439469419] [2024-06-14 12:48:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:50,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:52,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439469419] [2024-06-14 12:48:52,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439469419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:52,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:52,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:52,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848853116] [2024-06-14 12:48:52,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:52,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:52,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:52,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:52,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:52,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 196 transitions, 1820 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:52,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:52,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:52,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:52,733 INFO L124 PetriNetUnfolderBase]: 419/844 cut-off events. [2024-06-14 12:48:52,734 INFO L125 PetriNetUnfolderBase]: For 21327/21327 co-relation queries the response was YES. [2024-06-14 12:48:52,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 844 events. 419/844 cut-off events. For 21327/21327 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4831 event pairs, 75 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 4168. Up to 660 conditions per place. [2024-06-14 12:48:52,740 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 147 selfloop transitions, 56 changer transitions 0/207 dead transitions. [2024-06-14 12:48:52,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 207 transitions, 2304 flow [2024-06-14 12:48:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:48:52,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-14 12:48:52,741 INFO L175 Difference]: Start difference. First operand has 251 places, 196 transitions, 1820 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:48:52,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 207 transitions, 2304 flow [2024-06-14 12:48:52,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 207 transitions, 2122 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 12:48:52,808 INFO L231 Difference]: Finished difference. Result has 250 places, 198 transitions, 1817 flow [2024-06-14 12:48:52,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1817, PETRI_PLACES=250, PETRI_TRANSITIONS=198} [2024-06-14 12:48:52,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-14 12:48:52,809 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 198 transitions, 1817 flow [2024-06-14 12:48:52,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:52,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:52,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:52,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:48:52,809 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:52,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:52,809 INFO L85 PathProgramCache]: Analyzing trace with hash 170621821, now seen corresponding path program 10 times [2024-06-14 12:48:52,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:52,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871230758] [2024-06-14 12:48:52,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:52,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:54,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871230758] [2024-06-14 12:48:54,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871230758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:54,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:54,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:54,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808373402] [2024-06-14 12:48:54,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:54,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:54,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:54,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:54,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 198 transitions, 1817 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:54,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:54,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:54,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:54,783 INFO L124 PetriNetUnfolderBase]: 417/841 cut-off events. [2024-06-14 12:48:54,783 INFO L125 PetriNetUnfolderBase]: For 20193/20193 co-relation queries the response was YES. [2024-06-14 12:48:54,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 841 events. 417/841 cut-off events. For 20193/20193 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4820 event pairs, 75 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 4023. Up to 657 conditions per place. [2024-06-14 12:48:54,788 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 57 changer transitions 0/207 dead transitions. [2024-06-14 12:48:54,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 207 transitions, 2243 flow [2024-06-14 12:48:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:48:54,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 12:48:54,789 INFO L175 Difference]: Start difference. First operand has 250 places, 198 transitions, 1817 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:48:54,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 207 transitions, 2243 flow [2024-06-14 12:48:54,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 207 transitions, 2056 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:54,854 INFO L231 Difference]: Finished difference. Result has 252 places, 198 transitions, 1749 flow [2024-06-14 12:48:54,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1749, PETRI_PLACES=252, PETRI_TRANSITIONS=198} [2024-06-14 12:48:54,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 12:48:54,854 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 198 transitions, 1749 flow [2024-06-14 12:48:54,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:54,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:54,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:54,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:48:54,855 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:54,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:54,855 INFO L85 PathProgramCache]: Analyzing trace with hash -499459335, now seen corresponding path program 1 times [2024-06-14 12:48:54,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:54,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911942474] [2024-06-14 12:48:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:54,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:56,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:56,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911942474] [2024-06-14 12:48:56,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911942474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:56,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:56,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:56,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808378864] [2024-06-14 12:48:56,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:56,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:56,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:56,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:56,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:56,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:56,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 198 transitions, 1749 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:56,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:56,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:56,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:56,663 INFO L124 PetriNetUnfolderBase]: 424/856 cut-off events. [2024-06-14 12:48:56,663 INFO L125 PetriNetUnfolderBase]: For 22375/22375 co-relation queries the response was YES. [2024-06-14 12:48:56,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 856 events. 424/856 cut-off events. For 22375/22375 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4907 event pairs, 52 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 4037. Up to 744 conditions per place. [2024-06-14 12:48:56,669 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 23 changer transitions 0/216 dead transitions. [2024-06-14 12:48:56,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 216 transitions, 2249 flow [2024-06-14 12:48:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:48:56,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:48:56,670 INFO L175 Difference]: Start difference. First operand has 252 places, 198 transitions, 1749 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:48:56,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 216 transitions, 2249 flow [2024-06-14 12:48:56,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 216 transitions, 2123 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:56,735 INFO L231 Difference]: Finished difference. Result has 255 places, 201 transitions, 1718 flow [2024-06-14 12:48:56,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1718, PETRI_PLACES=255, PETRI_TRANSITIONS=201} [2024-06-14 12:48:56,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:48:56,735 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 201 transitions, 1718 flow [2024-06-14 12:48:56,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:56,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:56,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:56,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:48:56,736 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:56,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:56,736 INFO L85 PathProgramCache]: Analyzing trace with hash 688603705, now seen corresponding path program 2 times [2024-06-14 12:48:56,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:56,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795101429] [2024-06-14 12:48:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:56,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:58,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795101429] [2024-06-14 12:48:58,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795101429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:58,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:58,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:58,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063922569] [2024-06-14 12:48:58,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:58,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:58,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:58,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:58,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:58,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:58,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 201 transitions, 1718 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:58,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:58,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:58,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:58,661 INFO L124 PetriNetUnfolderBase]: 428/864 cut-off events. [2024-06-14 12:48:58,661 INFO L125 PetriNetUnfolderBase]: For 23083/23083 co-relation queries the response was YES. [2024-06-14 12:48:58,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 864 events. 428/864 cut-off events. For 23083/23083 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4981 event pairs, 52 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 4042. Up to 738 conditions per place. [2024-06-14 12:48:58,667 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 24 changer transitions 0/218 dead transitions. [2024-06-14 12:48:58,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 218 transitions, 2204 flow [2024-06-14 12:48:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:48:58,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:48:58,669 INFO L175 Difference]: Start difference. First operand has 255 places, 201 transitions, 1718 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:48:58,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 218 transitions, 2204 flow [2024-06-14 12:48:58,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 218 transitions, 2146 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:58,746 INFO L231 Difference]: Finished difference. Result has 259 places, 202 transitions, 1732 flow [2024-06-14 12:48:58,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1732, PETRI_PLACES=259, PETRI_TRANSITIONS=202} [2024-06-14 12:48:58,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 12:48:58,746 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 202 transitions, 1732 flow [2024-06-14 12:48:58,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:58,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:58,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:48:58,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:48:58,746 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:48:58,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash -737811697, now seen corresponding path program 3 times [2024-06-14 12:48:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:58,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589197924] [2024-06-14 12:48:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:58,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:59,752 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 12:48:59,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:59,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589197924] [2024-06-14 12:48:59,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589197924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:59,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:59,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:59,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145929594] [2024-06-14 12:48:59,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:59,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:59,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:59,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:59,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:59,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:48:59,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 202 transitions, 1732 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:48:59,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:59,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:48:59,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:00,211 INFO L124 PetriNetUnfolderBase]: 432/872 cut-off events. [2024-06-14 12:49:00,211 INFO L125 PetriNetUnfolderBase]: For 24020/24020 co-relation queries the response was YES. [2024-06-14 12:49:00,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 872 events. 432/872 cut-off events. For 24020/24020 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5012 event pairs, 54 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 4113. Up to 750 conditions per place. [2024-06-14 12:49:00,218 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 21 changer transitions 0/220 dead transitions. [2024-06-14 12:49:00,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 220 transitions, 2226 flow [2024-06-14 12:49:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:49:00,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:49:00,219 INFO L175 Difference]: Start difference. First operand has 259 places, 202 transitions, 1732 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:49:00,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 220 transitions, 2226 flow [2024-06-14 12:49:00,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 220 transitions, 2164 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:00,299 INFO L231 Difference]: Finished difference. Result has 261 places, 203 transitions, 1738 flow [2024-06-14 12:49:00,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1738, PETRI_PLACES=261, PETRI_TRANSITIONS=203} [2024-06-14 12:49:00,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-14 12:49:00,299 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 203 transitions, 1738 flow [2024-06-14 12:49:00,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:00,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:00,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:49:00,299 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:00,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2061518825, now seen corresponding path program 4 times [2024-06-14 12:49:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:00,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616887501] [2024-06-14 12:49:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:01,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:01,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616887501] [2024-06-14 12:49:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616887501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:01,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:01,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:01,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276389509] [2024-06-14 12:49:01,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:01,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:01,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:01,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:01,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:01,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:01,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 203 transitions, 1738 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:01,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:01,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:01,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:01,684 INFO L124 PetriNetUnfolderBase]: 436/880 cut-off events. [2024-06-14 12:49:01,684 INFO L125 PetriNetUnfolderBase]: For 24925/24925 co-relation queries the response was YES. [2024-06-14 12:49:01,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4279 conditions, 880 events. 436/880 cut-off events. For 24925/24925 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5086 event pairs, 52 based on Foata normal form. 2/881 useless extension candidates. Maximal degree in co-relation 4157. Up to 749 conditions per place. [2024-06-14 12:49:01,691 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 20 changer transitions 0/223 dead transitions. [2024-06-14 12:49:01,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 223 transitions, 2246 flow [2024-06-14 12:49:01,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:49:01,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:49:01,692 INFO L175 Difference]: Start difference. First operand has 261 places, 203 transitions, 1738 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:49:01,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 223 transitions, 2246 flow [2024-06-14 12:49:01,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 223 transitions, 2188 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:01,787 INFO L231 Difference]: Finished difference. Result has 263 places, 204 transitions, 1748 flow [2024-06-14 12:49:01,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1748, PETRI_PLACES=263, PETRI_TRANSITIONS=204} [2024-06-14 12:49:01,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-14 12:49:01,787 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 204 transitions, 1748 flow [2024-06-14 12:49:01,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:01,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:01,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:01,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:49:01,788 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:01,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash 688788279, now seen corresponding path program 1 times [2024-06-14 12:49:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:01,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761265670] [2024-06-14 12:49:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:01,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:03,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:03,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761265670] [2024-06-14 12:49:03,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761265670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:03,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:03,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:03,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882856118] [2024-06-14 12:49:03,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:03,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:03,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:03,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:03,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 204 transitions, 1748 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:03,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:03,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:03,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:03,512 INFO L124 PetriNetUnfolderBase]: 451/913 cut-off events. [2024-06-14 12:49:03,512 INFO L125 PetriNetUnfolderBase]: For 37649/37649 co-relation queries the response was YES. [2024-06-14 12:49:03,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 913 events. 451/913 cut-off events. For 37649/37649 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5312 event pairs, 80 based on Foata normal form. 8/920 useless extension candidates. Maximal degree in co-relation 4325. Up to 783 conditions per place. [2024-06-14 12:49:03,518 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 194 selfloop transitions, 18 changer transitions 9/225 dead transitions. [2024-06-14 12:49:03,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 225 transitions, 2300 flow [2024-06-14 12:49:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:49:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:49:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:49:03,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:49:03,519 INFO L175 Difference]: Start difference. First operand has 263 places, 204 transitions, 1748 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:49:03,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 225 transitions, 2300 flow [2024-06-14 12:49:03,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 225 transitions, 2242 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:03,608 INFO L231 Difference]: Finished difference. Result has 267 places, 203 transitions, 1727 flow [2024-06-14 12:49:03,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1727, PETRI_PLACES=267, PETRI_TRANSITIONS=203} [2024-06-14 12:49:03,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 12:49:03,609 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 203 transitions, 1727 flow [2024-06-14 12:49:03,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:03,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:03,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:03,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:49:03,609 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:03,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1963252025, now seen corresponding path program 5 times [2024-06-14 12:49:03,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:03,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297371488] [2024-06-14 12:49:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:04,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:04,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297371488] [2024-06-14 12:49:04,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297371488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:04,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:04,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:04,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103042360] [2024-06-14 12:49:04,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:04,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:04,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:04,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 203 transitions, 1727 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:04,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:04,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:04,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:05,103 INFO L124 PetriNetUnfolderBase]: 438/886 cut-off events. [2024-06-14 12:49:05,103 INFO L125 PetriNetUnfolderBase]: For 26324/26324 co-relation queries the response was YES. [2024-06-14 12:49:05,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 886 events. 438/886 cut-off events. For 26324/26324 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5143 event pairs, 78 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 4165. Up to 775 conditions per place. [2024-06-14 12:49:05,110 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 25 changer transitions 0/218 dead transitions. [2024-06-14 12:49:05,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 218 transitions, 2213 flow [2024-06-14 12:49:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:49:05,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:49:05,111 INFO L175 Difference]: Start difference. First operand has 267 places, 203 transitions, 1727 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:49:05,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 218 transitions, 2213 flow [2024-06-14 12:49:05,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 218 transitions, 2171 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:05,206 INFO L231 Difference]: Finished difference. Result has 265 places, 204 transitions, 1765 flow [2024-06-14 12:49:05,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1765, PETRI_PLACES=265, PETRI_TRANSITIONS=204} [2024-06-14 12:49:05,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-14 12:49:05,206 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 204 transitions, 1765 flow [2024-06-14 12:49:05,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:05,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:05,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:05,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:49:05,207 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:05,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:05,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1963074395, now seen corresponding path program 6 times [2024-06-14 12:49:05,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:05,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241832195] [2024-06-14 12:49:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:05,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:06,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241832195] [2024-06-14 12:49:06,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241832195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:06,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:06,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426838188] [2024-06-14 12:49:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:06,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:06,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:06,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:06,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:06,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:06,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 204 transitions, 1765 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:06,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:06,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:06,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:06,890 INFO L124 PetriNetUnfolderBase]: 449/907 cut-off events. [2024-06-14 12:49:06,890 INFO L125 PetriNetUnfolderBase]: For 31021/31021 co-relation queries the response was YES. [2024-06-14 12:49:06,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 907 events. 449/907 cut-off events. For 31021/31021 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5285 event pairs, 79 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 4476. Up to 773 conditions per place. [2024-06-14 12:49:06,897 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 27 changer transitions 0/222 dead transitions. [2024-06-14 12:49:06,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 222 transitions, 2419 flow [2024-06-14 12:49:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:49:06,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-14 12:49:06,897 INFO L175 Difference]: Start difference. First operand has 265 places, 204 transitions, 1765 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:49:06,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 222 transitions, 2419 flow [2024-06-14 12:49:07,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 222 transitions, 2349 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:07,002 INFO L231 Difference]: Finished difference. Result has 267 places, 206 transitions, 1807 flow [2024-06-14 12:49:07,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1807, PETRI_PLACES=267, PETRI_TRANSITIONS=206} [2024-06-14 12:49:07,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 12:49:07,003 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 206 transitions, 1807 flow [2024-06-14 12:49:07,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:07,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:07,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:07,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:49:07,003 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:07,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:07,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1969508135, now seen corresponding path program 7 times [2024-06-14 12:49:07,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:07,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495965359] [2024-06-14 12:49:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:07,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:08,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:08,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495965359] [2024-06-14 12:49:08,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495965359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:08,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:08,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:08,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083925125] [2024-06-14 12:49:08,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:08,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:08,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:08,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:08,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 206 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:08,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:08,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:08,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:08,609 INFO L124 PetriNetUnfolderBase]: 458/930 cut-off events. [2024-06-14 12:49:08,609 INFO L125 PetriNetUnfolderBase]: For 44556/44556 co-relation queries the response was YES. [2024-06-14 12:49:08,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 930 events. 458/930 cut-off events. For 44556/44556 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5439 event pairs, 84 based on Foata normal form. 10/939 useless extension candidates. Maximal degree in co-relation 4464. Up to 775 conditions per place. [2024-06-14 12:49:08,615 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 28 changer transitions 6/223 dead transitions. [2024-06-14 12:49:08,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 223 transitions, 2337 flow [2024-06-14 12:49:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:08,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:49:08,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-14 12:49:08,616 INFO L175 Difference]: Start difference. First operand has 267 places, 206 transitions, 1807 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:49:08,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 223 transitions, 2337 flow [2024-06-14 12:49:08,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 223 transitions, 2259 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 12:49:08,727 INFO L231 Difference]: Finished difference. Result has 271 places, 203 transitions, 1764 flow [2024-06-14 12:49:08,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1764, PETRI_PLACES=271, PETRI_TRANSITIONS=203} [2024-06-14 12:49:08,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-14 12:49:08,728 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 203 transitions, 1764 flow [2024-06-14 12:49:08,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:08,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:08,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:08,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:49:08,728 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:08,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash -988147627, now seen corresponding path program 8 times [2024-06-14 12:49:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:08,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922434578] [2024-06-14 12:49:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:09,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:09,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922434578] [2024-06-14 12:49:09,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922434578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:09,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:09,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:09,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183184189] [2024-06-14 12:49:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:09,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:09,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:09,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 203 transitions, 1764 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:09,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:09,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:09,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:10,091 INFO L124 PetriNetUnfolderBase]: 445/901 cut-off events. [2024-06-14 12:49:10,091 INFO L125 PetriNetUnfolderBase]: For 28085/28085 co-relation queries the response was YES. [2024-06-14 12:49:10,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4423 conditions, 901 events. 445/901 cut-off events. For 28085/28085 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5244 event pairs, 80 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 4296. Up to 799 conditions per place. [2024-06-14 12:49:10,098 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 18 changer transitions 0/219 dead transitions. [2024-06-14 12:49:10,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 219 transitions, 2258 flow [2024-06-14 12:49:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:10,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:49:10,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:49:10,099 INFO L175 Difference]: Start difference. First operand has 271 places, 203 transitions, 1764 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:49:10,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 219 transitions, 2258 flow [2024-06-14 12:49:10,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 219 transitions, 2187 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 12:49:10,195 INFO L231 Difference]: Finished difference. Result has 270 places, 204 transitions, 1763 flow [2024-06-14 12:49:10,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1763, PETRI_PLACES=270, PETRI_TRANSITIONS=204} [2024-06-14 12:49:10,195 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-14 12:49:10,195 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 204 transitions, 1763 flow [2024-06-14 12:49:10,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:10,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:10,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:10,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:49:10,196 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:10,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:10,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1393363463, now seen corresponding path program 9 times [2024-06-14 12:49:10,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:10,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065771442] [2024-06-14 12:49:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:10,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065771442] [2024-06-14 12:49:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065771442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:11,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:11,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:11,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470464759] [2024-06-14 12:49:11,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:11,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:11,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:11,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:11,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:11,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 204 transitions, 1763 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:11,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:11,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:11,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:11,718 INFO L124 PetriNetUnfolderBase]: 457/929 cut-off events. [2024-06-14 12:49:11,719 INFO L125 PetriNetUnfolderBase]: For 41072/41072 co-relation queries the response was YES. [2024-06-14 12:49:11,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4555 conditions, 929 events. 457/929 cut-off events. For 41072/41072 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5403 event pairs, 82 based on Foata normal form. 8/936 useless extension candidates. Maximal degree in co-relation 4428. Up to 798 conditions per place. [2024-06-14 12:49:11,725 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 193 selfloop transitions, 14 changer transitions 12/223 dead transitions. [2024-06-14 12:49:11,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 223 transitions, 2289 flow [2024-06-14 12:49:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:49:11,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:49:11,727 INFO L175 Difference]: Start difference. First operand has 270 places, 204 transitions, 1763 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:49:11,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 223 transitions, 2289 flow [2024-06-14 12:49:11,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 223 transitions, 2229 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:11,844 INFO L231 Difference]: Finished difference. Result has 272 places, 201 transitions, 1707 flow [2024-06-14 12:49:11,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1707, PETRI_PLACES=272, PETRI_TRANSITIONS=201} [2024-06-14 12:49:11,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-14 12:49:11,845 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 201 transitions, 1707 flow [2024-06-14 12:49:11,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:11,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:11,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:11,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:49:11,846 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:11,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:11,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1562627103, now seen corresponding path program 2 times [2024-06-14 12:49:11,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:11,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007056228] [2024-06-14 12:49:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:11,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:13,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:13,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007056228] [2024-06-14 12:49:13,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007056228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:13,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:13,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568932603] [2024-06-14 12:49:13,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:13,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:13,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:13,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:13,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:13,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:13,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 201 transitions, 1707 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:13,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:13,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:13,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:13,784 INFO L124 PetriNetUnfolderBase]: 447/911 cut-off events. [2024-06-14 12:49:13,784 INFO L125 PetriNetUnfolderBase]: For 43317/43317 co-relation queries the response was YES. [2024-06-14 12:49:13,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4452 conditions, 911 events. 447/911 cut-off events. For 43317/43317 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5326 event pairs, 86 based on Foata normal form. 8/918 useless extension candidates. Maximal degree in co-relation 4324. Up to 763 conditions per place. [2024-06-14 12:49:13,790 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 20 changer transitions 13/219 dead transitions. [2024-06-14 12:49:13,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 219 transitions, 2231 flow [2024-06-14 12:49:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:49:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:49:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-14 12:49:13,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:49:13,791 INFO L175 Difference]: Start difference. First operand has 272 places, 201 transitions, 1707 flow. Second operand 12 states and 156 transitions. [2024-06-14 12:49:13,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 219 transitions, 2231 flow [2024-06-14 12:49:13,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 219 transitions, 2197 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:13,897 INFO L231 Difference]: Finished difference. Result has 269 places, 195 transitions, 1667 flow [2024-06-14 12:49:13,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1667, PETRI_PLACES=269, PETRI_TRANSITIONS=195} [2024-06-14 12:49:13,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-14 12:49:13,897 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 195 transitions, 1667 flow [2024-06-14 12:49:13,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:13,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:13,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:13,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:49:13,898 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:13,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:13,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2103807177, now seen corresponding path program 3 times [2024-06-14 12:49:13,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:13,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136606570] [2024-06-14 12:49:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:13,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:15,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:15,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136606570] [2024-06-14 12:49:15,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136606570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:15,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:15,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:15,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436446048] [2024-06-14 12:49:15,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:15,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:15,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:15,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:15,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 195 transitions, 1667 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:15,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:15,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:15,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:15,882 INFO L124 PetriNetUnfolderBase]: 435/895 cut-off events. [2024-06-14 12:49:15,882 INFO L125 PetriNetUnfolderBase]: For 43345/43345 co-relation queries the response was YES. [2024-06-14 12:49:15,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 895 events. 435/895 cut-off events. For 43345/43345 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5211 event pairs, 88 based on Foata normal form. 8/902 useless extension candidates. Maximal degree in co-relation 4240. Up to 756 conditions per place. [2024-06-14 12:49:15,888 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 19 changer transitions 9/213 dead transitions. [2024-06-14 12:49:15,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 213 transitions, 2179 flow [2024-06-14 12:49:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:49:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:49:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:49:15,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:49:15,889 INFO L175 Difference]: Start difference. First operand has 269 places, 195 transitions, 1667 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:49:15,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 213 transitions, 2179 flow [2024-06-14 12:49:15,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 213 transitions, 2127 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:15,994 INFO L231 Difference]: Finished difference. Result has 264 places, 192 transitions, 1626 flow [2024-06-14 12:49:15,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1626, PETRI_PLACES=264, PETRI_TRANSITIONS=192} [2024-06-14 12:49:15,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-14 12:49:15,995 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 192 transitions, 1626 flow [2024-06-14 12:49:15,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:15,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:15,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:15,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:49:15,995 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:15,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1799099133, now seen corresponding path program 4 times [2024-06-14 12:49:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:15,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258244883] [2024-06-14 12:49:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:15,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:17,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:17,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258244883] [2024-06-14 12:49:17,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258244883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:17,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:17,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:17,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047945912] [2024-06-14 12:49:17,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:17,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:17,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:17,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:17,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 192 transitions, 1626 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:17,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:17,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:17,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:17,465 INFO L124 PetriNetUnfolderBase]: 441/913 cut-off events. [2024-06-14 12:49:17,465 INFO L125 PetriNetUnfolderBase]: For 48125/48125 co-relation queries the response was YES. [2024-06-14 12:49:17,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4750 conditions, 913 events. 441/913 cut-off events. For 48125/48125 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5297 event pairs, 97 based on Foata normal form. 6/918 useless extension candidates. Maximal degree in co-relation 4626. Up to 733 conditions per place. [2024-06-14 12:49:17,472 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 17 changer transitions 7/212 dead transitions. [2024-06-14 12:49:17,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 212 transitions, 2272 flow [2024-06-14 12:49:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:17,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:49:17,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-14 12:49:17,474 INFO L175 Difference]: Start difference. First operand has 264 places, 192 transitions, 1626 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:49:17,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 212 transitions, 2272 flow [2024-06-14 12:49:17,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 212 transitions, 2226 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:17,611 INFO L231 Difference]: Finished difference. Result has 262 places, 189 transitions, 1590 flow [2024-06-14 12:49:17,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1590, PETRI_PLACES=262, PETRI_TRANSITIONS=189} [2024-06-14 12:49:17,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-14 12:49:17,612 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 189 transitions, 1590 flow [2024-06-14 12:49:17,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:17,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:17,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:17,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:49:17,612 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:17,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash 398135095, now seen corresponding path program 10 times [2024-06-14 12:49:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:17,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649616933] [2024-06-14 12:49:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:17,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:18,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649616933] [2024-06-14 12:49:18,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649616933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:18,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:18,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:18,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545391555] [2024-06-14 12:49:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:18,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:18,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:18,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:18,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 189 transitions, 1590 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:18,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:18,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:18,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:19,020 INFO L124 PetriNetUnfolderBase]: 430/884 cut-off events. [2024-06-14 12:49:19,020 INFO L125 PetriNetUnfolderBase]: For 40479/40479 co-relation queries the response was YES. [2024-06-14 12:49:19,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4636 conditions, 884 events. 430/884 cut-off events. For 40479/40479 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5085 event pairs, 84 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 4512. Up to 755 conditions per place. [2024-06-14 12:49:19,026 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 21 changer transitions 0/210 dead transitions. [2024-06-14 12:49:19,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 210 transitions, 2080 flow [2024-06-14 12:49:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:49:19,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:49:19,027 INFO L175 Difference]: Start difference. First operand has 262 places, 189 transitions, 1590 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:49:19,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 210 transitions, 2080 flow [2024-06-14 12:49:19,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 210 transitions, 2043 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:19,148 INFO L231 Difference]: Finished difference. Result has 260 places, 190 transitions, 1629 flow [2024-06-14 12:49:19,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1629, PETRI_PLACES=260, PETRI_TRANSITIONS=190} [2024-06-14 12:49:19,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-14 12:49:19,149 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 190 transitions, 1629 flow [2024-06-14 12:49:19,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:19,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:19,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:19,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:49:19,149 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:19,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2121153123, now seen corresponding path program 11 times [2024-06-14 12:49:19,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:19,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27628245] [2024-06-14 12:49:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:19,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:20,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:20,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27628245] [2024-06-14 12:49:20,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27628245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:20,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:20,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124257003] [2024-06-14 12:49:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:20,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:20,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:20,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 190 transitions, 1629 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:20,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:20,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:20,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:20,666 INFO L124 PetriNetUnfolderBase]: 434/892 cut-off events. [2024-06-14 12:49:20,666 INFO L125 PetriNetUnfolderBase]: For 40982/40982 co-relation queries the response was YES. [2024-06-14 12:49:20,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4738 conditions, 892 events. 434/892 cut-off events. For 40982/40982 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5159 event pairs, 88 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 4615. Up to 772 conditions per place. [2024-06-14 12:49:20,673 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 22 changer transitions 0/209 dead transitions. [2024-06-14 12:49:20,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 209 transitions, 2113 flow [2024-06-14 12:49:20,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:49:20,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:49:20,674 INFO L175 Difference]: Start difference. First operand has 260 places, 190 transitions, 1629 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:49:20,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 209 transitions, 2113 flow [2024-06-14 12:49:20,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 209 transitions, 2047 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:20,788 INFO L231 Difference]: Finished difference. Result has 262 places, 191 transitions, 1643 flow [2024-06-14 12:49:20,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1643, PETRI_PLACES=262, PETRI_TRANSITIONS=191} [2024-06-14 12:49:20,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-14 12:49:20,789 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 191 transitions, 1643 flow [2024-06-14 12:49:20,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:20,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:20,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:20,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:49:20,789 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:20,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1977863373, now seen corresponding path program 12 times [2024-06-14 12:49:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:20,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115773601] [2024-06-14 12:49:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:20,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:21,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:21,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115773601] [2024-06-14 12:49:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115773601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:21,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:21,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929527248] [2024-06-14 12:49:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:21,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:21,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:21,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:21,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:21,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:21,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 191 transitions, 1643 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:21,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:21,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:21,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:22,175 INFO L124 PetriNetUnfolderBase]: 456/938 cut-off events. [2024-06-14 12:49:22,175 INFO L125 PetriNetUnfolderBase]: For 60590/60590 co-relation queries the response was YES. [2024-06-14 12:49:22,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 938 events. 456/938 cut-off events. For 60590/60590 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5466 event pairs, 98 based on Foata normal form. 10/947 useless extension candidates. Maximal degree in co-relation 4895. Up to 789 conditions per place. [2024-06-14 12:49:22,184 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 20 changer transitions 11/214 dead transitions. [2024-06-14 12:49:22,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 214 transitions, 2237 flow [2024-06-14 12:49:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:49:22,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-14 12:49:22,184 INFO L175 Difference]: Start difference. First operand has 262 places, 191 transitions, 1643 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:49:22,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 214 transitions, 2237 flow [2024-06-14 12:49:22,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 214 transitions, 2167 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:22,305 INFO L231 Difference]: Finished difference. Result has 265 places, 190 transitions, 1612 flow [2024-06-14 12:49:22,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1612, PETRI_PLACES=265, PETRI_TRANSITIONS=190} [2024-06-14 12:49:22,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-14 12:49:22,306 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 190 transitions, 1612 flow [2024-06-14 12:49:22,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:22,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:22,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:22,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:49:22,306 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:22,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1964173773, now seen corresponding path program 13 times [2024-06-14 12:49:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:22,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447299947] [2024-06-14 12:49:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:22,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:23,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:23,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447299947] [2024-06-14 12:49:23,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447299947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:23,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:23,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:23,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630441450] [2024-06-14 12:49:23,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:23,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:23,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:23,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:23,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:23,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 190 transitions, 1612 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:23,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:23,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:23,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:23,909 INFO L124 PetriNetUnfolderBase]: 436/898 cut-off events. [2024-06-14 12:49:23,909 INFO L125 PetriNetUnfolderBase]: For 43139/43139 co-relation queries the response was YES. [2024-06-14 12:49:23,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4747 conditions, 898 events. 436/898 cut-off events. For 43139/43139 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5204 event pairs, 93 based on Foata normal form. 2/899 useless extension candidates. Maximal degree in co-relation 4621. Up to 783 conditions per place. [2024-06-14 12:49:23,916 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 22 changer transitions 0/208 dead transitions. [2024-06-14 12:49:23,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 208 transitions, 2094 flow [2024-06-14 12:49:23,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:49:23,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:49:23,917 INFO L175 Difference]: Start difference. First operand has 265 places, 190 transitions, 1612 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:49:23,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 208 transitions, 2094 flow [2024-06-14 12:49:24,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 208 transitions, 2048 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:24,058 INFO L231 Difference]: Finished difference. Result has 264 places, 191 transitions, 1648 flow [2024-06-14 12:49:24,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1648, PETRI_PLACES=264, PETRI_TRANSITIONS=191} [2024-06-14 12:49:24,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-14 12:49:24,058 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 191 transitions, 1648 flow [2024-06-14 12:49:24,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:24,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:24,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:24,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:49:24,059 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:24,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash 2100134851, now seen corresponding path program 14 times [2024-06-14 12:49:24,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:24,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997844955] [2024-06-14 12:49:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:24,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:24,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997844955] [2024-06-14 12:49:24,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997844955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:24,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:24,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:24,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550861373] [2024-06-14 12:49:24,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:24,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:24,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:25,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:25,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 191 transitions, 1648 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:25,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:25,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:25,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:25,392 INFO L124 PetriNetUnfolderBase]: 448/926 cut-off events. [2024-06-14 12:49:25,392 INFO L125 PetriNetUnfolderBase]: For 55702/55702 co-relation queries the response was YES. [2024-06-14 12:49:25,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 926 events. 448/926 cut-off events. For 55702/55702 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5388 event pairs, 57 based on Foata normal form. 8/933 useless extension candidates. Maximal degree in co-relation 4787. Up to 738 conditions per place. [2024-06-14 12:49:25,399 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 19 changer transitions 17/214 dead transitions. [2024-06-14 12:49:25,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 214 transitions, 2170 flow [2024-06-14 12:49:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:49:25,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:49:25,399 INFO L175 Difference]: Start difference. First operand has 264 places, 191 transitions, 1648 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:49:25,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 214 transitions, 2170 flow [2024-06-14 12:49:25,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 214 transitions, 2098 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:25,539 INFO L231 Difference]: Finished difference. Result has 266 places, 187 transitions, 1592 flow [2024-06-14 12:49:25,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1592, PETRI_PLACES=266, PETRI_TRANSITIONS=187} [2024-06-14 12:49:25,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-14 12:49:25,539 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 187 transitions, 1592 flow [2024-06-14 12:49:25,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:25,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:25,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:25,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:49:25,539 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:25,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:25,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1400179909, now seen corresponding path program 15 times [2024-06-14 12:49:25,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:25,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957350966] [2024-06-14 12:49:25,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:25,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:26,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957350966] [2024-06-14 12:49:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957350966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:26,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:26,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:26,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838456908] [2024-06-14 12:49:26,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:26,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:26,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:26,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:26,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:26,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:26,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 187 transitions, 1592 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:26,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:26,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:26,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:26,873 INFO L124 PetriNetUnfolderBase]: 433/895 cut-off events. [2024-06-14 12:49:26,873 INFO L125 PetriNetUnfolderBase]: For 58148/58148 co-relation queries the response was YES. [2024-06-14 12:49:26,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 895 events. 433/895 cut-off events. For 58148/58148 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5147 event pairs, 65 based on Foata normal form. 8/902 useless extension candidates. Maximal degree in co-relation 4650. Up to 662 conditions per place. [2024-06-14 12:49:26,879 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 163 selfloop transitions, 13 changer transitions 27/207 dead transitions. [2024-06-14 12:49:26,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 207 transitions, 2092 flow [2024-06-14 12:49:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:26,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:49:26,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:49:26,880 INFO L175 Difference]: Start difference. First operand has 266 places, 187 transitions, 1592 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:49:26,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 207 transitions, 2092 flow [2024-06-14 12:49:27,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 207 transitions, 2048 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:27,003 INFO L231 Difference]: Finished difference. Result has 260 places, 173 transitions, 1469 flow [2024-06-14 12:49:27,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1469, PETRI_PLACES=260, PETRI_TRANSITIONS=173} [2024-06-14 12:49:27,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-14 12:49:27,004 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 173 transitions, 1469 flow [2024-06-14 12:49:27,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:27,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:27,004 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 12:49:27,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:49:27,004 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:27,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:27,004 INFO L85 PathProgramCache]: Analyzing trace with hash -99836835, now seen corresponding path program 16 times [2024-06-14 12:49:27,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540083584] [2024-06-14 12:49:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540083584] [2024-06-14 12:49:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540083584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:27,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:27,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:27,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745948481] [2024-06-14 12:49:27,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:28,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:28,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 173 transitions, 1469 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:28,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:28,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:28,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:28,407 INFO L124 PetriNetUnfolderBase]: 375/783 cut-off events. [2024-06-14 12:49:28,407 INFO L125 PetriNetUnfolderBase]: For 57897/57897 co-relation queries the response was YES. [2024-06-14 12:49:28,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 783 events. 375/783 cut-off events. For 57897/57897 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4340 event pairs, 46 based on Foata normal form. 8/790 useless extension candidates. Maximal degree in co-relation 4242. Up to 583 conditions per place. [2024-06-14 12:49:28,412 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 150 selfloop transitions, 16 changer transitions 20/190 dead transitions. [2024-06-14 12:49:28,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 190 transitions, 1927 flow [2024-06-14 12:49:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:49:28,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:49:28,413 INFO L175 Difference]: Start difference. First operand has 260 places, 173 transitions, 1469 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:49:28,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 190 transitions, 1927 flow [2024-06-14 12:49:28,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 190 transitions, 1881 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:28,542 INFO L231 Difference]: Finished difference. Result has 244 places, 162 transitions, 1377 flow [2024-06-14 12:49:28,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1377, PETRI_PLACES=244, PETRI_TRANSITIONS=162} [2024-06-14 12:49:28,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 12:49:28,543 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 162 transitions, 1377 flow [2024-06-14 12:49:28,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:28,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:28,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:28,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:49:28,544 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:28,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1350120251, now seen corresponding path program 17 times [2024-06-14 12:49:28,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:28,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195868981] [2024-06-14 12:49:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:28,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:29,459 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 12:49:29,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:29,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195868981] [2024-06-14 12:49:29,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195868981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:29,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:29,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:29,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958076409] [2024-06-14 12:49:29,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:29,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:29,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:29,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:29,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:29,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 162 transitions, 1377 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:29,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:29,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:29,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:29,834 INFO L124 PetriNetUnfolderBase]: 341/721 cut-off events. [2024-06-14 12:49:29,834 INFO L125 PetriNetUnfolderBase]: For 54464/54464 co-relation queries the response was YES. [2024-06-14 12:49:29,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 721 events. 341/721 cut-off events. For 54464/54464 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3954 event pairs, 53 based on Foata normal form. 10/730 useless extension candidates. Maximal degree in co-relation 3986. Up to 549 conditions per place. [2024-06-14 12:49:29,839 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 19 changer transitions 14/179 dead transitions. [2024-06-14 12:49:29,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 179 transitions, 1873 flow [2024-06-14 12:49:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:49:29,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:49:29,840 INFO L175 Difference]: Start difference. First operand has 244 places, 162 transitions, 1377 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:49:29,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 179 transitions, 1873 flow [2024-06-14 12:49:29,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 179 transitions, 1819 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:29,937 INFO L231 Difference]: Finished difference. Result has 232 places, 156 transitions, 1328 flow [2024-06-14 12:49:29,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1328, PETRI_PLACES=232, PETRI_TRANSITIONS=156} [2024-06-14 12:49:29,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-14 12:49:29,938 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 156 transitions, 1328 flow [2024-06-14 12:49:29,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:29,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:29,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:29,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:49:29,938 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:29,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:29,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1349942621, now seen corresponding path program 18 times [2024-06-14 12:49:29,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:29,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141184833] [2024-06-14 12:49:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:29,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:30,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:30,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141184833] [2024-06-14 12:49:30,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141184833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:30,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:30,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:30,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906203138] [2024-06-14 12:49:30,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:30,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:30,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:30,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:30,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:31,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:31,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 156 transitions, 1328 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:31,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:31,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:31,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:31,310 INFO L124 PetriNetUnfolderBase]: 322/688 cut-off events. [2024-06-14 12:49:31,310 INFO L125 PetriNetUnfolderBase]: For 43532/43532 co-relation queries the response was YES. [2024-06-14 12:49:31,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3799 conditions, 688 events. 322/688 cut-off events. For 43532/43532 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3731 event pairs, 38 based on Foata normal form. 8/695 useless extension candidates. Maximal degree in co-relation 3698. Up to 503 conditions per place. [2024-06-14 12:49:31,315 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 7 changer transitions 30/172 dead transitions. [2024-06-14 12:49:31,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 172 transitions, 1740 flow [2024-06-14 12:49:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:49:31,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:49:31,316 INFO L175 Difference]: Start difference. First operand has 232 places, 156 transitions, 1328 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:49:31,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 172 transitions, 1740 flow [2024-06-14 12:49:31,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 172 transitions, 1679 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:31,406 INFO L231 Difference]: Finished difference. Result has 226 places, 138 transitions, 1144 flow [2024-06-14 12:49:31,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1144, PETRI_PLACES=226, PETRI_TRANSITIONS=138} [2024-06-14 12:49:31,407 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-14 12:49:31,407 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 138 transitions, 1144 flow [2024-06-14 12:49:31,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:31,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:31,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:31,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:49:31,407 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:31,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:31,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1623947897, now seen corresponding path program 19 times [2024-06-14 12:49:31,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:31,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543177441] [2024-06-14 12:49:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:31,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:32,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:32,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543177441] [2024-06-14 12:49:32,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543177441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:32,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:32,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:32,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300948102] [2024-06-14 12:49:32,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:32,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:32,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:32,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:32,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:32,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:32,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 138 transitions, 1144 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:32,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:32,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:32,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:32,802 INFO L124 PetriNetUnfolderBase]: 289/607 cut-off events. [2024-06-14 12:49:32,803 INFO L125 PetriNetUnfolderBase]: For 44014/44014 co-relation queries the response was YES. [2024-06-14 12:49:32,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 607 events. 289/607 cut-off events. For 44014/44014 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3155 event pairs, 40 based on Foata normal form. 10/616 useless extension candidates. Maximal degree in co-relation 3349. Up to 438 conditions per place. [2024-06-14 12:49:32,807 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 32 changer transitions 6/152 dead transitions. [2024-06-14 12:49:32,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 152 transitions, 1540 flow [2024-06-14 12:49:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:32,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:49:32,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:49:32,808 INFO L175 Difference]: Start difference. First operand has 226 places, 138 transitions, 1144 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:49:32,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 152 transitions, 1540 flow [2024-06-14 12:49:32,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 152 transitions, 1491 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-14 12:49:32,880 INFO L231 Difference]: Finished difference. Result has 205 places, 136 transitions, 1167 flow [2024-06-14 12:49:32,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1167, PETRI_PLACES=205, PETRI_TRANSITIONS=136} [2024-06-14 12:49:32,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-14 12:49:32,881 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 136 transitions, 1167 flow [2024-06-14 12:49:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:32,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:32,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:32,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:49:32,881 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:32,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash 976031131, now seen corresponding path program 5 times [2024-06-14 12:49:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:32,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955471859] [2024-06-14 12:49:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:32,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:34,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:34,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955471859] [2024-06-14 12:49:34,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955471859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:34,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:34,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:34,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548178339] [2024-06-14 12:49:34,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:34,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:34,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:34,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:34,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:34,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:34,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 136 transitions, 1167 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:34,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:34,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:34,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:34,623 INFO L124 PetriNetUnfolderBase]: 284/602 cut-off events. [2024-06-14 12:49:34,624 INFO L125 PetriNetUnfolderBase]: For 34053/34053 co-relation queries the response was YES. [2024-06-14 12:49:34,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3348 conditions, 602 events. 284/602 cut-off events. For 34053/34053 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3127 event pairs, 42 based on Foata normal form. 8/609 useless extension candidates. Maximal degree in co-relation 3255. Up to 434 conditions per place. [2024-06-14 12:49:34,628 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 29 changer transitions 7/150 dead transitions. [2024-06-14 12:49:34,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 150 transitions, 1533 flow [2024-06-14 12:49:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:49:34,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:49:34,631 INFO L175 Difference]: Start difference. First operand has 205 places, 136 transitions, 1167 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:49:34,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 150 transitions, 1533 flow [2024-06-14 12:49:34,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 150 transitions, 1420 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-14 12:49:34,705 INFO L231 Difference]: Finished difference. Result has 204 places, 133 transitions, 1103 flow [2024-06-14 12:49:34,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1103, PETRI_PLACES=204, PETRI_TRANSITIONS=133} [2024-06-14 12:49:34,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-14 12:49:34,706 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 133 transitions, 1103 flow [2024-06-14 12:49:34,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:34,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:34,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:34,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:49:34,706 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:34,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash 648520769, now seen corresponding path program 6 times [2024-06-14 12:49:34,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:34,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080573815] [2024-06-14 12:49:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:34,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080573815] [2024-06-14 12:49:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080573815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:35,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:35,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362028313] [2024-06-14 12:49:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:35,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:36,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:36,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 133 transitions, 1103 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:36,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:36,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:36,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:36,315 INFO L124 PetriNetUnfolderBase]: 304/646 cut-off events. [2024-06-14 12:49:36,315 INFO L125 PetriNetUnfolderBase]: For 44682/44682 co-relation queries the response was YES. [2024-06-14 12:49:36,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4004 conditions, 646 events. 304/646 cut-off events. For 44682/44682 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3436 event pairs, 55 based on Foata normal form. 6/651 useless extension candidates. Maximal degree in co-relation 3913. Up to 377 conditions per place. [2024-06-14 12:49:36,319 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 25 changer transitions 7/152 dead transitions. [2024-06-14 12:49:36,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 152 transitions, 1631 flow [2024-06-14 12:49:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:49:36,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:49:36,320 INFO L175 Difference]: Start difference. First operand has 204 places, 133 transitions, 1103 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:49:36,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 152 transitions, 1631 flow [2024-06-14 12:49:36,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 152 transitions, 1545 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-14 12:49:36,427 INFO L231 Difference]: Finished difference. Result has 201 places, 130 transitions, 1060 flow [2024-06-14 12:49:36,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1060, PETRI_PLACES=201, PETRI_TRANSITIONS=130} [2024-06-14 12:49:36,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-14 12:49:36,427 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 130 transitions, 1060 flow [2024-06-14 12:49:36,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:36,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:36,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:36,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:49:36,427 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:36,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:36,428 INFO L85 PathProgramCache]: Analyzing trace with hash 741025117, now seen corresponding path program 20 times [2024-06-14 12:49:36,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:36,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858837627] [2024-06-14 12:49:36,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:36,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:37,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:37,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858837627] [2024-06-14 12:49:37,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858837627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:37,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:37,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:37,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087018757] [2024-06-14 12:49:37,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:37,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:37,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:37,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:37,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:37,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 130 transitions, 1060 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:37,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:37,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:37,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:37,949 INFO L124 PetriNetUnfolderBase]: 293/617 cut-off events. [2024-06-14 12:49:37,949 INFO L125 PetriNetUnfolderBase]: For 38297/38297 co-relation queries the response was YES. [2024-06-14 12:49:37,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3826 conditions, 617 events. 293/617 cut-off events. For 38297/38297 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3230 event pairs, 51 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 3737. Up to 505 conditions per place. [2024-06-14 12:49:37,953 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-06-14 12:49:37,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 142 transitions, 1378 flow [2024-06-14 12:49:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:49:37,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:49:37,954 INFO L175 Difference]: Start difference. First operand has 201 places, 130 transitions, 1060 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:49:37,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 142 transitions, 1378 flow [2024-06-14 12:49:38,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 142 transitions, 1325 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:38,031 INFO L231 Difference]: Finished difference. Result has 198 places, 131 transitions, 1073 flow [2024-06-14 12:49:38,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1073, PETRI_PLACES=198, PETRI_TRANSITIONS=131} [2024-06-14 12:49:38,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-14 12:49:38,031 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 131 transitions, 1073 flow [2024-06-14 12:49:38,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:38,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:38,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:38,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:49:38,031 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:38,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash 471023325, now seen corresponding path program 21 times [2024-06-14 12:49:38,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:38,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658081786] [2024-06-14 12:49:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:38,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:39,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:39,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658081786] [2024-06-14 12:49:39,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658081786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:39,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:39,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:39,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422694257] [2024-06-14 12:49:39,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:39,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:39,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 131 transitions, 1073 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:39,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:39,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:39,421 INFO L124 PetriNetUnfolderBase]: 305/645 cut-off events. [2024-06-14 12:49:39,421 INFO L125 PetriNetUnfolderBase]: For 43754/43754 co-relation queries the response was YES. [2024-06-14 12:49:39,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 645 events. 305/645 cut-off events. For 43754/43754 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3410 event pairs, 55 based on Foata normal form. 8/652 useless extension candidates. Maximal degree in co-relation 3851. Up to 521 conditions per place. [2024-06-14 12:49:39,425 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 117 selfloop transitions, 13 changer transitions 12/146 dead transitions. [2024-06-14 12:49:39,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 146 transitions, 1419 flow [2024-06-14 12:49:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:49:39,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:49:39,425 INFO L175 Difference]: Start difference. First operand has 198 places, 131 transitions, 1073 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:49:39,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 146 transitions, 1419 flow [2024-06-14 12:49:39,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 146 transitions, 1363 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:39,513 INFO L231 Difference]: Finished difference. Result has 200 places, 128 transitions, 1031 flow [2024-06-14 12:49:39,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1031, PETRI_PLACES=200, PETRI_TRANSITIONS=128} [2024-06-14 12:49:39,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-14 12:49:39,513 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 128 transitions, 1031 flow [2024-06-14 12:49:39,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:39,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:39,513 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 12:49:39,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:49:39,513 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:39,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 642018705, now seen corresponding path program 22 times [2024-06-14 12:49:39,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:39,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346007170] [2024-06-14 12:49:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:40,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:40,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346007170] [2024-06-14 12:49:40,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346007170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:40,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:40,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:40,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390514054] [2024-06-14 12:49:40,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:40,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:40,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:40,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:40,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:40,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:40,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 128 transitions, 1031 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:40,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:40,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:40,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:40,985 INFO L124 PetriNetUnfolderBase]: 280/594 cut-off events. [2024-06-14 12:49:40,985 INFO L125 PetriNetUnfolderBase]: For 34122/34124 co-relation queries the response was YES. [2024-06-14 12:49:40,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 594 events. 280/594 cut-off events. For 34122/34124 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3074 event pairs, 54 based on Foata normal form. 4/597 useless extension candidates. Maximal degree in co-relation 3501. Up to 474 conditions per place. [2024-06-14 12:49:40,988 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-06-14 12:49:40,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 139 transitions, 1341 flow [2024-06-14 12:49:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:49:40,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:49:40,990 INFO L175 Difference]: Start difference. First operand has 200 places, 128 transitions, 1031 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:49:40,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 139 transitions, 1341 flow [2024-06-14 12:49:41,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 139 transitions, 1309 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:41,050 INFO L231 Difference]: Finished difference. Result has 196 places, 129 transitions, 1077 flow [2024-06-14 12:49:41,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1077, PETRI_PLACES=196, PETRI_TRANSITIONS=129} [2024-06-14 12:49:41,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-14 12:49:41,052 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 129 transitions, 1077 flow [2024-06-14 12:49:41,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:41,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:41,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:41,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:49:41,053 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:41,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash 641841075, now seen corresponding path program 23 times [2024-06-14 12:49:41,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:41,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378875408] [2024-06-14 12:49:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:42,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:42,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378875408] [2024-06-14 12:49:42,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378875408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:42,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:42,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140307552] [2024-06-14 12:49:42,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:42,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:42,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:42,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:42,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 129 transitions, 1077 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:42,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:42,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:42,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:42,625 INFO L124 PetriNetUnfolderBase]: 284/602 cut-off events. [2024-06-14 12:49:42,625 INFO L125 PetriNetUnfolderBase]: For 32055/32057 co-relation queries the response was YES. [2024-06-14 12:49:42,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 602 events. 284/602 cut-off events. For 32055/32057 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3143 event pairs, 44 based on Foata normal form. 4/605 useless extension candidates. Maximal degree in co-relation 3545. Up to 442 conditions per place. [2024-06-14 12:49:42,629 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 32 changer transitions 0/141 dead transitions. [2024-06-14 12:49:42,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 141 transitions, 1395 flow [2024-06-14 12:49:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:49:42,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 12:49:42,630 INFO L175 Difference]: Start difference. First operand has 196 places, 129 transitions, 1077 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:49:42,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 141 transitions, 1395 flow [2024-06-14 12:49:42,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 141 transitions, 1327 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:42,694 INFO L231 Difference]: Finished difference. Result has 198 places, 130 transitions, 1101 flow [2024-06-14 12:49:42,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1101, PETRI_PLACES=198, PETRI_TRANSITIONS=130} [2024-06-14 12:49:42,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-14 12:49:42,694 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 130 transitions, 1101 flow [2024-06-14 12:49:42,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:42,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:42,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:42,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:49:42,695 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:42,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1670369411, now seen corresponding path program 7 times [2024-06-14 12:49:42,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:42,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288290603] [2024-06-14 12:49:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:42,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:44,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:44,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288290603] [2024-06-14 12:49:44,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288290603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:44,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:44,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:44,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057485526] [2024-06-14 12:49:44,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:44,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:44,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:44,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:44,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:44,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 130 transitions, 1101 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:44,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:44,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:44,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:44,828 INFO L124 PetriNetUnfolderBase]: 289/617 cut-off events. [2024-06-14 12:49:44,828 INFO L125 PetriNetUnfolderBase]: For 37251/37251 co-relation queries the response was YES. [2024-06-14 12:49:44,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 617 events. 289/617 cut-off events. For 37251/37251 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3223 event pairs, 57 based on Foata normal form. 8/624 useless extension candidates. Maximal degree in co-relation 3503. Up to 461 conditions per place. [2024-06-14 12:49:44,832 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 21 changer transitions 13/144 dead transitions. [2024-06-14 12:49:44,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 144 transitions, 1449 flow [2024-06-14 12:49:44,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:44,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:49:44,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:49:44,833 INFO L175 Difference]: Start difference. First operand has 198 places, 130 transitions, 1101 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:49:44,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 144 transitions, 1449 flow [2024-06-14 12:49:44,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 144 transitions, 1369 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:44,897 INFO L231 Difference]: Finished difference. Result has 200 places, 124 transitions, 1025 flow [2024-06-14 12:49:44,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1025, PETRI_PLACES=200, PETRI_TRANSITIONS=124} [2024-06-14 12:49:44,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-14 12:49:44,897 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 124 transitions, 1025 flow [2024-06-14 12:49:44,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:44,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:44,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:44,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:49:44,898 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:44,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1815873423, now seen corresponding path program 24 times [2024-06-14 12:49:44,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:44,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601566106] [2024-06-14 12:49:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:44,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:45,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:45,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601566106] [2024-06-14 12:49:45,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601566106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:45,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:45,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:45,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296390750] [2024-06-14 12:49:45,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:45,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:45,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:45,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:45,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:45,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:45,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 124 transitions, 1025 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:45,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:45,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:45,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:46,138 INFO L124 PetriNetUnfolderBase]: 281/607 cut-off events. [2024-06-14 12:49:46,139 INFO L125 PetriNetUnfolderBase]: For 39754/39754 co-relation queries the response was YES. [2024-06-14 12:49:46,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 607 events. 281/607 cut-off events. For 39754/39754 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3170 event pairs, 62 based on Foata normal form. 10/614 useless extension candidates. Maximal degree in co-relation 3417. Up to 364 conditions per place. [2024-06-14 12:49:46,142 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 54 changer transitions 6/136 dead transitions. [2024-06-14 12:49:46,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 136 transitions, 1371 flow [2024-06-14 12:49:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:49:46,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 12:49:46,143 INFO L175 Difference]: Start difference. First operand has 200 places, 124 transitions, 1025 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:49:46,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 136 transitions, 1371 flow [2024-06-14 12:49:46,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 136 transitions, 1317 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:46,206 INFO L231 Difference]: Finished difference. Result has 193 places, 122 transitions, 1091 flow [2024-06-14 12:49:46,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1091, PETRI_PLACES=193, PETRI_TRANSITIONS=122} [2024-06-14 12:49:46,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-14 12:49:46,206 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 122 transitions, 1091 flow [2024-06-14 12:49:46,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:46,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:46,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:46,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:49:46,207 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:46,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1230781997, now seen corresponding path program 8 times [2024-06-14 12:49:46,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:46,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964357161] [2024-06-14 12:49:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:46,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:47,705 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 12:49:47,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964357161] [2024-06-14 12:49:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964357161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:47,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:47,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:47,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163569022] [2024-06-14 12:49:47,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:47,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:47,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:47,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:47,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 122 transitions, 1091 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:47,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:47,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:47,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:48,130 INFO L124 PetriNetUnfolderBase]: 294/636 cut-off events. [2024-06-14 12:49:48,131 INFO L125 PetriNetUnfolderBase]: For 39762/39764 co-relation queries the response was YES. [2024-06-14 12:49:48,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4017 conditions, 636 events. 294/636 cut-off events. For 39762/39764 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3384 event pairs, 68 based on Foata normal form. 8/642 useless extension candidates. Maximal degree in co-relation 3932. Up to 381 conditions per place. [2024-06-14 12:49:48,134 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 82 selfloop transitions, 45 changer transitions 7/138 dead transitions. [2024-06-14 12:49:48,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 138 transitions, 1549 flow [2024-06-14 12:49:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:49:48,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:49:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:49:48,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:49:48,135 INFO L175 Difference]: Start difference. First operand has 193 places, 122 transitions, 1091 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:49:48,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 138 transitions, 1549 flow [2024-06-14 12:49:48,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 138 transitions, 1421 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:48,198 INFO L231 Difference]: Finished difference. Result has 195 places, 119 transitions, 1039 flow [2024-06-14 12:49:48,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1039, PETRI_PLACES=195, PETRI_TRANSITIONS=119} [2024-06-14 12:49:48,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-14 12:49:48,199 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 119 transitions, 1039 flow [2024-06-14 12:49:48,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:48,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:48,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:49:48,199 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:48,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1417933315, now seen corresponding path program 9 times [2024-06-14 12:49:48,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:48,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731440331] [2024-06-14 12:49:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:48,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731440331] [2024-06-14 12:49:49,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731440331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:49,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:49,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:49,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873851146] [2024-06-14 12:49:49,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:49,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:49,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:49,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:49,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 119 transitions, 1039 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:49,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:49,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:49,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:50,056 INFO L124 PetriNetUnfolderBase]: 291/627 cut-off events. [2024-06-14 12:49:50,056 INFO L125 PetriNetUnfolderBase]: For 41822/41824 co-relation queries the response was YES. [2024-06-14 12:49:50,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3955 conditions, 627 events. 291/627 cut-off events. For 41822/41824 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3330 event pairs, 72 based on Foata normal form. 10/635 useless extension candidates. Maximal degree in co-relation 3870. Up to 434 conditions per place. [2024-06-14 12:49:50,060 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 79 selfloop transitions, 39 changer transitions 9/131 dead transitions. [2024-06-14 12:49:50,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 131 transitions, 1355 flow [2024-06-14 12:49:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:49:50,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:49:50,061 INFO L175 Difference]: Start difference. First operand has 195 places, 119 transitions, 1039 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:49:50,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 131 transitions, 1355 flow [2024-06-14 12:49:50,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 131 transitions, 1259 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:49:50,126 INFO L231 Difference]: Finished difference. Result has 191 places, 116 transitions, 1006 flow [2024-06-14 12:49:50,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1006, PETRI_PLACES=191, PETRI_TRANSITIONS=116} [2024-06-14 12:49:50,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-14 12:49:50,126 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 116 transitions, 1006 flow [2024-06-14 12:49:50,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:50,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:50,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:50,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:49:50,127 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:50,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2059318469, now seen corresponding path program 25 times [2024-06-14 12:49:50,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:50,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524384004] [2024-06-14 12:49:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:50,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:51,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524384004] [2024-06-14 12:49:51,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524384004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675366428] [2024-06-14 12:49:51,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:51,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:51,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:51,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 116 transitions, 1006 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:51,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:51,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:51,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:51,527 INFO L124 PetriNetUnfolderBase]: 290/632 cut-off events. [2024-06-14 12:49:51,527 INFO L125 PetriNetUnfolderBase]: For 40838/40840 co-relation queries the response was YES. [2024-06-14 12:49:51,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 632 events. 290/632 cut-off events. For 40838/40840 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3387 event pairs, 74 based on Foata normal form. 12/642 useless extension candidates. Maximal degree in co-relation 3808. Up to 477 conditions per place. [2024-06-14 12:49:51,531 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 90 selfloop transitions, 28 changer transitions 6/128 dead transitions. [2024-06-14 12:49:51,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 128 transitions, 1334 flow [2024-06-14 12:49:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:49:51,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-14 12:49:51,531 INFO L175 Difference]: Start difference. First operand has 191 places, 116 transitions, 1006 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:49:51,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 128 transitions, 1334 flow [2024-06-14 12:49:51,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 128 transitions, 1252 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:51,589 INFO L231 Difference]: Finished difference. Result has 188 places, 114 transitions, 988 flow [2024-06-14 12:49:51,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=988, PETRI_PLACES=188, PETRI_TRANSITIONS=114} [2024-06-14 12:49:51,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-14 12:49:51,589 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 114 transitions, 988 flow [2024-06-14 12:49:51,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:51,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:51,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:51,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:49:51,590 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:51,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:51,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2050740645, now seen corresponding path program 10 times [2024-06-14 12:49:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809034270] [2024-06-14 12:49:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:51,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:52,927 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 12:49:52,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:52,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809034270] [2024-06-14 12:49:52,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809034270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:52,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:52,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:52,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478035516] [2024-06-14 12:49:52,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:52,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:52,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:53,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:53,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 114 transitions, 988 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:53,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:53,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:53,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:53,392 INFO L124 PetriNetUnfolderBase]: 310/674 cut-off events. [2024-06-14 12:49:53,392 INFO L125 PetriNetUnfolderBase]: For 44646/44648 co-relation queries the response was YES. [2024-06-14 12:49:53,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4514 conditions, 674 events. 310/674 cut-off events. For 44646/44648 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3686 event pairs, 83 based on Foata normal form. 8/680 useless extension candidates. Maximal degree in co-relation 4432. Up to 453 conditions per place. [2024-06-14 12:49:53,397 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 26 changer transitions 7/131 dead transitions. [2024-06-14 12:49:53,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 131 transitions, 1448 flow [2024-06-14 12:49:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:49:53,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:49:53,398 INFO L175 Difference]: Start difference. First operand has 188 places, 114 transitions, 988 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:49:53,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 131 transitions, 1448 flow [2024-06-14 12:49:53,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 131 transitions, 1328 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:53,460 INFO L231 Difference]: Finished difference. Result has 188 places, 111 transitions, 907 flow [2024-06-14 12:49:53,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=907, PETRI_PLACES=188, PETRI_TRANSITIONS=111} [2024-06-14 12:49:53,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-14 12:49:53,460 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 111 transitions, 907 flow [2024-06-14 12:49:53,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:53,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:53,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:53,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:49:53,460 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:53,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2059311525, now seen corresponding path program 11 times [2024-06-14 12:49:53,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:53,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460008394] [2024-06-14 12:49:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:53,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:54,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460008394] [2024-06-14 12:49:54,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460008394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:54,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:54,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:54,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914120598] [2024-06-14 12:49:54,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:54,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:54,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:54,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:54,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:54,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:54,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 111 transitions, 907 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:54,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:54,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:54,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:55,388 INFO L124 PetriNetUnfolderBase]: 307/665 cut-off events. [2024-06-14 12:49:55,389 INFO L125 PetriNetUnfolderBase]: For 49551/49553 co-relation queries the response was YES. [2024-06-14 12:49:55,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4443 conditions, 665 events. 307/665 cut-off events. For 49551/49553 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3622 event pairs, 85 based on Foata normal form. 10/673 useless extension candidates. Maximal degree in co-relation 4362. Up to 521 conditions per place. [2024-06-14 12:49:55,392 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 19 changer transitions 14/123 dead transitions. [2024-06-14 12:49:55,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 123 transitions, 1205 flow [2024-06-14 12:49:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:49:55,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:49:55,393 INFO L175 Difference]: Start difference. First operand has 188 places, 111 transitions, 907 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:49:55,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 123 transitions, 1205 flow [2024-06-14 12:49:55,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 123 transitions, 1153 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:55,451 INFO L231 Difference]: Finished difference. Result has 186 places, 104 transitions, 850 flow [2024-06-14 12:49:55,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=850, PETRI_PLACES=186, PETRI_TRANSITIONS=104} [2024-06-14 12:49:55,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-14 12:49:55,452 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 104 transitions, 850 flow [2024-06-14 12:49:55,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:55,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:55,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:55,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:49:55,452 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:55,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:55,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1627345793, now seen corresponding path program 26 times [2024-06-14 12:49:55,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:55,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660840890] [2024-06-14 12:49:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:55,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:56,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:56,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660840890] [2024-06-14 12:49:56,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660840890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:56,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:56,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605002324] [2024-06-14 12:49:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:56,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:56,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:56,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:56,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:56,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:56,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 104 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:56,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:56,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:56,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:56,921 INFO L124 PetriNetUnfolderBase]: 286/620 cut-off events. [2024-06-14 12:49:56,922 INFO L125 PetriNetUnfolderBase]: For 40976/40978 co-relation queries the response was YES. [2024-06-14 12:49:56,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 620 events. 286/620 cut-off events. For 40976/40978 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3295 event pairs, 87 based on Foata normal form. 4/622 useless extension candidates. Maximal degree in co-relation 4160. Up to 443 conditions per place. [2024-06-14 12:49:56,925 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 49 changer transitions 0/113 dead transitions. [2024-06-14 12:49:56,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 113 transitions, 1108 flow [2024-06-14 12:49:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:49:56,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:49:56,926 INFO L175 Difference]: Start difference. First operand has 186 places, 104 transitions, 850 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:49:56,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 113 transitions, 1108 flow [2024-06-14 12:49:56,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 113 transitions, 1046 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-14 12:49:56,975 INFO L231 Difference]: Finished difference. Result has 176 places, 105 transitions, 916 flow [2024-06-14 12:49:56,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=916, PETRI_PLACES=176, PETRI_TRANSITIONS=105} [2024-06-14 12:49:56,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-14 12:49:56,976 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 105 transitions, 916 flow [2024-06-14 12:49:56,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:56,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:56,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:56,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:49:56,976 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:56,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:56,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2007747677, now seen corresponding path program 27 times [2024-06-14 12:49:56,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:56,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142398487] [2024-06-14 12:49:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:56,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:58,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:58,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142398487] [2024-06-14 12:49:58,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142398487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:58,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:58,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:58,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17900725] [2024-06-14 12:49:58,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:58,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:58,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:58,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:58,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:58,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:58,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 105 transitions, 916 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:58,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:58,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:58,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:58,416 INFO L124 PetriNetUnfolderBase]: 283/619 cut-off events. [2024-06-14 12:49:58,417 INFO L125 PetriNetUnfolderBase]: For 32232/32232 co-relation queries the response was YES. [2024-06-14 12:49:58,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 619 events. 283/619 cut-off events. For 32232/32232 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3282 event pairs, 84 based on Foata normal form. 2/619 useless extension candidates. Maximal degree in co-relation 3890. Up to 515 conditions per place. [2024-06-14 12:49:58,420 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 23 changer transitions 0/114 dead transitions. [2024-06-14 12:49:58,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 114 transitions, 1174 flow [2024-06-14 12:49:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:49:58,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:49:58,421 INFO L175 Difference]: Start difference. First operand has 176 places, 105 transitions, 916 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:49:58,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 114 transitions, 1174 flow [2024-06-14 12:49:58,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 114 transitions, 1060 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:58,473 INFO L231 Difference]: Finished difference. Result has 178 places, 106 transitions, 876 flow [2024-06-14 12:49:58,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=876, PETRI_PLACES=178, PETRI_TRANSITIONS=106} [2024-06-14 12:49:58,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-14 12:49:58,473 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 106 transitions, 876 flow [2024-06-14 12:49:58,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:58,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:58,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:49:58,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:49:58,473 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:49:58,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:58,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1627523423, now seen corresponding path program 28 times [2024-06-14 12:49:58,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:58,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320838216] [2024-06-14 12:49:58,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:58,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:59,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:59,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320838216] [2024-06-14 12:49:59,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320838216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:59,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:59,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455042916] [2024-06-14 12:49:59,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:59,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:59,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:59,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:49:59,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 106 transitions, 876 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:49:59,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:59,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:49:59,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:59,970 INFO L124 PetriNetUnfolderBase]: 316/686 cut-off events. [2024-06-14 12:49:59,970 INFO L125 PetriNetUnfolderBase]: For 42922/42922 co-relation queries the response was YES. [2024-06-14 12:49:59,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 686 events. 316/686 cut-off events. For 42922/42922 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3765 event pairs, 97 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 4602. Up to 426 conditions per place. [2024-06-14 12:49:59,973 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 65 selfloop transitions, 52 changer transitions 0/121 dead transitions. [2024-06-14 12:49:59,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 121 transitions, 1298 flow [2024-06-14 12:49:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:49:59,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-14 12:49:59,974 INFO L175 Difference]: Start difference. First operand has 178 places, 106 transitions, 876 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:49:59,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 121 transitions, 1298 flow [2024-06-14 12:50:00,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 121 transitions, 1234 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:50:00,026 INFO L231 Difference]: Finished difference. Result has 180 places, 108 transitions, 970 flow [2024-06-14 12:50:00,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=970, PETRI_PLACES=180, PETRI_TRANSITIONS=108} [2024-06-14 12:50:00,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-14 12:50:00,026 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 108 transitions, 970 flow [2024-06-14 12:50:00,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:00,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:00,026 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 12:50:00,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:50:00,027 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:00,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1627338849, now seen corresponding path program 12 times [2024-06-14 12:50:00,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:00,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139203062] [2024-06-14 12:50:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:01,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:01,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139203062] [2024-06-14 12:50:01,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139203062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:01,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:01,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:01,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85426528] [2024-06-14 12:50:01,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:01,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:01,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:01,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:01,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:01,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 108 transitions, 970 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:01,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:01,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:01,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:01,992 INFO L124 PetriNetUnfolderBase]: 306/668 cut-off events. [2024-06-14 12:50:01,992 INFO L125 PetriNetUnfolderBase]: For 42852/42852 co-relation queries the response was YES. [2024-06-14 12:50:01,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4363 conditions, 668 events. 306/668 cut-off events. For 42852/42852 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3645 event pairs, 91 based on Foata normal form. 8/674 useless extension candidates. Maximal degree in co-relation 4286. Up to 481 conditions per place. [2024-06-14 12:50:01,997 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 71 selfloop transitions, 36 changer transitions 9/120 dead transitions. [2024-06-14 12:50:01,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 120 transitions, 1258 flow [2024-06-14 12:50:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:50:01,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:50:01,998 INFO L175 Difference]: Start difference. First operand has 180 places, 108 transitions, 970 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:50:01,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 120 transitions, 1258 flow [2024-06-14 12:50:02,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 120 transitions, 1166 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:50:02,061 INFO L231 Difference]: Finished difference. Result has 185 places, 105 transitions, 931 flow [2024-06-14 12:50:02,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=931, PETRI_PLACES=185, PETRI_TRANSITIONS=105} [2024-06-14 12:50:02,062 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-14 12:50:02,062 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 105 transitions, 931 flow [2024-06-14 12:50:02,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:02,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:02,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:02,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:50:02,063 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:02,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:02,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2007570047, now seen corresponding path program 29 times [2024-06-14 12:50:02,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:02,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660178454] [2024-06-14 12:50:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:02,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:03,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:03,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660178454] [2024-06-14 12:50:03,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660178454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:03,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:03,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:50:03,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946274257] [2024-06-14 12:50:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:03,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:50:03,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:03,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:50:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:50:03,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:03,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 105 transitions, 931 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:03,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:03,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:03,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:03,483 INFO L124 PetriNetUnfolderBase]: 293/641 cut-off events. [2024-06-14 12:50:03,483 INFO L125 PetriNetUnfolderBase]: For 39103/39105 co-relation queries the response was YES. [2024-06-14 12:50:03,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4291 conditions, 641 events. 293/641 cut-off events. For 39103/39105 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3438 event pairs, 87 based on Foata normal form. 4/643 useless extension candidates. Maximal degree in co-relation 4212. Up to 523 conditions per place. [2024-06-14 12:50:03,487 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 24 changer transitions 0/115 dead transitions. [2024-06-14 12:50:03,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 115 transitions, 1197 flow [2024-06-14 12:50:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:50:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:50:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:50:03,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:50:03,488 INFO L175 Difference]: Start difference. First operand has 185 places, 105 transitions, 931 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:50:03,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 115 transitions, 1197 flow [2024-06-14 12:50:03,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 115 transitions, 1121 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:03,548 INFO L231 Difference]: Finished difference. Result has 181 places, 106 transitions, 935 flow [2024-06-14 12:50:03,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=935, PETRI_PLACES=181, PETRI_TRANSITIONS=106} [2024-06-14 12:50:03,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-14 12:50:03,548 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 106 transitions, 935 flow [2024-06-14 12:50:03,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:03,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:03,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:03,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:50:03,548 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:03,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1153057155, now seen corresponding path program 13 times [2024-06-14 12:50:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043215998] [2024-06-14 12:50:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:05,022 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 12:50:05,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:05,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043215998] [2024-06-14 12:50:05,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043215998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:05,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:05,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:05,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303153390] [2024-06-14 12:50:05,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:05,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:05,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:05,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:05,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:05,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:05,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 106 transitions, 935 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:05,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:05,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:05,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:05,530 INFO L124 PetriNetUnfolderBase]: 326/720 cut-off events. [2024-06-14 12:50:05,530 INFO L125 PetriNetUnfolderBase]: For 47251/47253 co-relation queries the response was YES. [2024-06-14 12:50:05,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 720 events. 326/720 cut-off events. For 47251/47253 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4011 event pairs, 127 based on Foata normal form. 6/725 useless extension candidates. Maximal degree in co-relation 4808. Up to 548 conditions per place. [2024-06-14 12:50:05,535 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 23 changer transitions 6/127 dead transitions. [2024-06-14 12:50:05,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 127 transitions, 1375 flow [2024-06-14 12:50:05,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:05,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:50:05,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-14 12:50:05,535 INFO L175 Difference]: Start difference. First operand has 181 places, 106 transitions, 935 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:50:05,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 127 transitions, 1375 flow [2024-06-14 12:50:05,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 127 transitions, 1305 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:50:05,598 INFO L231 Difference]: Finished difference. Result has 185 places, 106 transitions, 911 flow [2024-06-14 12:50:05,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=911, PETRI_PLACES=185, PETRI_TRANSITIONS=106} [2024-06-14 12:50:05,599 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-14 12:50:05,599 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 106 transitions, 911 flow [2024-06-14 12:50:05,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:05,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:05,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:05,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:50:05,599 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:05,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:05,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1998590779, now seen corresponding path program 30 times [2024-06-14 12:50:05,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:05,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004005680] [2024-06-14 12:50:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:05,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:06,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:06,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004005680] [2024-06-14 12:50:06,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004005680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:06,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:06,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:50:06,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246566550] [2024-06-14 12:50:06,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:06,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:50:06,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:06,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:50:06,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:50:06,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:06,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 106 transitions, 911 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:06,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:06,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:06,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:06,947 INFO L124 PetriNetUnfolderBase]: 289/645 cut-off events. [2024-06-14 12:50:06,948 INFO L125 PetriNetUnfolderBase]: For 44774/44776 co-relation queries the response was YES. [2024-06-14 12:50:06,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 645 events. 289/645 cut-off events. For 44774/44776 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3539 event pairs, 110 based on Foata normal form. 18/662 useless extension candidates. Maximal degree in co-relation 3733. Up to 487 conditions per place. [2024-06-14 12:50:06,951 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 18 changer transitions 10/119 dead transitions. [2024-06-14 12:50:06,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 119 transitions, 1201 flow [2024-06-14 12:50:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:50:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:50:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:50:06,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:50:06,952 INFO L175 Difference]: Start difference. First operand has 185 places, 106 transitions, 911 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:50:06,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 119 transitions, 1201 flow [2024-06-14 12:50:07,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 119 transitions, 1140 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:07,011 INFO L231 Difference]: Finished difference. Result has 183 places, 99 transitions, 836 flow [2024-06-14 12:50:07,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=836, PETRI_PLACES=183, PETRI_TRANSITIONS=99} [2024-06-14 12:50:07,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 12:50:07,011 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 99 transitions, 836 flow [2024-06-14 12:50:07,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:07,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:07,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:07,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:50:07,012 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:07,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:07,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2007754621, now seen corresponding path program 14 times [2024-06-14 12:50:07,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:07,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46598627] [2024-06-14 12:50:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:07,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:08,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46598627] [2024-06-14 12:50:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46598627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:08,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20054486] [2024-06-14 12:50:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:08,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:08,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:08,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:08,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:08,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:08,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 99 transitions, 836 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:08,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:08,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:08,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:08,925 INFO L124 PetriNetUnfolderBase]: 259/577 cut-off events. [2024-06-14 12:50:08,925 INFO L125 PetriNetUnfolderBase]: For 33735/33737 co-relation queries the response was YES. [2024-06-14 12:50:08,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3378 conditions, 577 events. 259/577 cut-off events. For 33735/33737 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3030 event pairs, 79 based on Foata normal form. 10/584 useless extension candidates. Maximal degree in co-relation 3301. Up to 447 conditions per place. [2024-06-14 12:50:08,928 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 80 selfloop transitions, 20 changer transitions 7/111 dead transitions. [2024-06-14 12:50:08,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 111 transitions, 1106 flow [2024-06-14 12:50:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:50:08,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:50:08,929 INFO L175 Difference]: Start difference. First operand has 183 places, 99 transitions, 836 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:50:08,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 111 transitions, 1106 flow [2024-06-14 12:50:08,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 111 transitions, 1042 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:50:08,979 INFO L231 Difference]: Finished difference. Result has 179 places, 96 transitions, 795 flow [2024-06-14 12:50:08,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=795, PETRI_PLACES=179, PETRI_TRANSITIONS=96} [2024-06-14 12:50:08,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-14 12:50:08,980 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 96 transitions, 795 flow [2024-06-14 12:50:08,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:08,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:08,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:08,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:50:08,980 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:08,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash -810758565, now seen corresponding path program 15 times [2024-06-14 12:50:08,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:08,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363689403] [2024-06-14 12:50:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:08,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:10,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:10,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363689403] [2024-06-14 12:50:10,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363689403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:10,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:50:10,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20145011] [2024-06-14 12:50:10,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:10,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:50:10,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:50:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:50:10,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:10,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 96 transitions, 795 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:10,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:10,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:10,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:10,535 INFO L124 PetriNetUnfolderBase]: 265/605 cut-off events. [2024-06-14 12:50:10,535 INFO L125 PetriNetUnfolderBase]: For 37784/37786 co-relation queries the response was YES. [2024-06-14 12:50:10,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3675 conditions, 605 events. 265/605 cut-off events. For 37784/37786 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3199 event pairs, 112 based on Foata normal form. 6/610 useless extension candidates. Maximal degree in co-relation 3598. Up to 418 conditions per place. [2024-06-14 12:50:10,538 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 86 selfloop transitions, 14 changer transitions 10/114 dead transitions. [2024-06-14 12:50:10,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 114 transitions, 1173 flow [2024-06-14 12:50:10,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:50:10,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:50:10,539 INFO L175 Difference]: Start difference. First operand has 179 places, 96 transitions, 795 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:50:10,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 114 transitions, 1173 flow [2024-06-14 12:50:10,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 114 transitions, 1123 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:10,592 INFO L231 Difference]: Finished difference. Result has 177 places, 92 transitions, 756 flow [2024-06-14 12:50:10,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=756, PETRI_PLACES=177, PETRI_TRANSITIONS=92} [2024-06-14 12:50:10,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-14 12:50:10,593 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 92 transitions, 756 flow [2024-06-14 12:50:10,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:10,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:10,593 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 12:50:10,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:50:10,593 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:10,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1978923657, now seen corresponding path program 16 times [2024-06-14 12:50:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:10,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951887735] [2024-06-14 12:50:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951887735] [2024-06-14 12:50:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951887735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:12,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:12,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991329128] [2024-06-14 12:50:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:12,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:12,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:12,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:12,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 92 transitions, 756 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:12,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:12,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:12,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:12,515 INFO L124 PetriNetUnfolderBase]: 254/576 cut-off events. [2024-06-14 12:50:12,516 INFO L125 PetriNetUnfolderBase]: For 36693/36695 co-relation queries the response was YES. [2024-06-14 12:50:12,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 576 events. 254/576 cut-off events. For 36693/36695 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2994 event pairs, 110 based on Foata normal form. 6/581 useless extension candidates. Maximal degree in co-relation 3473. Up to 418 conditions per place. [2024-06-14 12:50:12,519 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 14 changer transitions 7/109 dead transitions. [2024-06-14 12:50:12,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 109 transitions, 1120 flow [2024-06-14 12:50:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:50:12,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:50:12,520 INFO L175 Difference]: Start difference. First operand has 177 places, 92 transitions, 756 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:50:12,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 109 transitions, 1120 flow [2024-06-14 12:50:12,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 109 transitions, 1084 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:12,557 INFO L231 Difference]: Finished difference. Result has 173 places, 89 transitions, 736 flow [2024-06-14 12:50:12,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=736, PETRI_PLACES=173, PETRI_TRANSITIONS=89} [2024-06-14 12:50:12,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-14 12:50:12,558 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 89 transitions, 736 flow [2024-06-14 12:50:12,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:12,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:12,558 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 12:50:12,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:50:12,558 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:12,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1998597723, now seen corresponding path program 17 times [2024-06-14 12:50:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804393740] [2024-06-14 12:50:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:12,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:14,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:14,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804393740] [2024-06-14 12:50:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804393740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:14,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:14,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:14,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116969949] [2024-06-14 12:50:14,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:14,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:14,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:14,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:14,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:14,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 89 transitions, 736 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:14,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:14,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:14,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:14,461 INFO L124 PetriNetUnfolderBase]: 244/554 cut-off events. [2024-06-14 12:50:14,462 INFO L125 PetriNetUnfolderBase]: For 33488/33490 co-relation queries the response was YES. [2024-06-14 12:50:14,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3289 conditions, 554 events. 244/554 cut-off events. For 33488/33490 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2825 event pairs, 115 based on Foata normal form. 8/561 useless extension candidates. Maximal degree in co-relation 3215. Up to 461 conditions per place. [2024-06-14 12:50:14,464 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 12 changer transitions 9/102 dead transitions. [2024-06-14 12:50:14,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 102 transitions, 968 flow [2024-06-14 12:50:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:50:14,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:50:14,465 INFO L175 Difference]: Start difference. First operand has 173 places, 89 transitions, 736 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:50:14,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 102 transitions, 968 flow [2024-06-14 12:50:14,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 102 transitions, 927 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:14,507 INFO L231 Difference]: Finished difference. Result has 170 places, 85 transitions, 680 flow [2024-06-14 12:50:14,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=680, PETRI_PLACES=170, PETRI_TRANSITIONS=85} [2024-06-14 12:50:14,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-14 12:50:14,507 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 85 transitions, 680 flow [2024-06-14 12:50:14,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:14,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:14,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:14,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:50:14,508 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:14,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash 433056889, now seen corresponding path program 31 times [2024-06-14 12:50:14,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:14,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400168630] [2024-06-14 12:50:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:14,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:15,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400168630] [2024-06-14 12:50:15,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400168630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:15,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:15,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:50:15,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414820476] [2024-06-14 12:50:15,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:15,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:50:15,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:15,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:50:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:50:15,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:15,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 85 transitions, 680 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:15,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:15,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:15,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:15,916 INFO L124 PetriNetUnfolderBase]: 231/525 cut-off events. [2024-06-14 12:50:15,916 INFO L125 PetriNetUnfolderBase]: For 26326/26328 co-relation queries the response was YES. [2024-06-14 12:50:15,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3101 conditions, 525 events. 231/525 cut-off events. For 26326/26328 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2617 event pairs, 85 based on Foata normal form. 4/526 useless extension candidates. Maximal degree in co-relation 3029. Up to 435 conditions per place. [2024-06-14 12:50:15,918 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-14 12:50:15,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 95 transitions, 908 flow [2024-06-14 12:50:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:50:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:50:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:50:15,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:50:15,919 INFO L175 Difference]: Start difference. First operand has 170 places, 85 transitions, 680 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:50:15,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 95 transitions, 908 flow [2024-06-14 12:50:15,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 95 transitions, 844 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:50:15,955 INFO L231 Difference]: Finished difference. Result has 165 places, 86 transitions, 686 flow [2024-06-14 12:50:15,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=165, PETRI_TRANSITIONS=86} [2024-06-14 12:50:15,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-14 12:50:15,956 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 86 transitions, 686 flow [2024-06-14 12:50:15,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:15,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:15,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:15,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:50:15,956 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:15,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash 119597883, now seen corresponding path program 32 times [2024-06-14 12:50:15,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:15,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108190106] [2024-06-14 12:50:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:15,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:17,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:17,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108190106] [2024-06-14 12:50:17,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108190106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:17,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:17,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:50:17,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768412076] [2024-06-14 12:50:17,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:17,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:50:17,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:50:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:50:17,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:17,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 86 transitions, 686 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:17,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:17,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:17,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:17,339 INFO L124 PetriNetUnfolderBase]: 236/540 cut-off events. [2024-06-14 12:50:17,339 INFO L125 PetriNetUnfolderBase]: For 27062/27062 co-relation queries the response was YES. [2024-06-14 12:50:17,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 540 events. 236/540 cut-off events. For 27062/27062 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2723 event pairs, 82 based on Foata normal form. 8/546 useless extension candidates. Maximal degree in co-relation 2862. Up to 421 conditions per place. [2024-06-14 12:50:17,341 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 14 changer transitions 12/98 dead transitions. [2024-06-14 12:50:17,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 98 transitions, 902 flow [2024-06-14 12:50:17,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:50:17,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:50:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:50:17,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:50:17,342 INFO L175 Difference]: Start difference. First operand has 165 places, 86 transitions, 686 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:50:17,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 98 transitions, 902 flow [2024-06-14 12:50:17,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 98 transitions, 844 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:50:17,382 INFO L231 Difference]: Finished difference. Result has 167 places, 82 transitions, 616 flow [2024-06-14 12:50:17,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=616, PETRI_PLACES=167, PETRI_TRANSITIONS=82} [2024-06-14 12:50:17,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-14 12:50:17,382 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 82 transitions, 616 flow [2024-06-14 12:50:17,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:17,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:17,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:17,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:50:17,383 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:17,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:17,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1155460114, now seen corresponding path program 1 times [2024-06-14 12:50:17,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:17,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663786397] [2024-06-14 12:50:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:17,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:19,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:19,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663786397] [2024-06-14 12:50:19,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663786397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:19,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:19,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188342367] [2024-06-14 12:50:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:19,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:19,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:19,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:19,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:19,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 82 transitions, 616 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:19,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:19,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:19,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:19,509 INFO L124 PetriNetUnfolderBase]: 222/516 cut-off events. [2024-06-14 12:50:19,509 INFO L125 PetriNetUnfolderBase]: For 27078/27078 co-relation queries the response was YES. [2024-06-14 12:50:19,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 516 events. 222/516 cut-off events. For 27078/27078 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2573 event pairs, 68 based on Foata normal form. 6/521 useless extension candidates. Maximal degree in co-relation 2720. Up to 397 conditions per place. [2024-06-14 12:50:19,512 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 71 selfloop transitions, 14 changer transitions 10/99 dead transitions. [2024-06-14 12:50:19,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 99 transitions, 848 flow [2024-06-14 12:50:19,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 12:50:19,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 12:50:19,513 INFO L175 Difference]: Start difference. First operand has 167 places, 82 transitions, 616 flow. Second operand 12 states and 146 transitions. [2024-06-14 12:50:19,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 99 transitions, 848 flow [2024-06-14 12:50:19,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 99 transitions, 768 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:50:19,548 INFO L231 Difference]: Finished difference. Result has 162 places, 78 transitions, 536 flow [2024-06-14 12:50:19,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=536, PETRI_PLACES=162, PETRI_TRANSITIONS=78} [2024-06-14 12:50:19,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-14 12:50:19,549 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 78 transitions, 536 flow [2024-06-14 12:50:19,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:19,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:19,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:19,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:50:19,549 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:19,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:19,549 INFO L85 PathProgramCache]: Analyzing trace with hash 713253136, now seen corresponding path program 2 times [2024-06-14 12:50:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:19,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319012606] [2024-06-14 12:50:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:19,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:20,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:20,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319012606] [2024-06-14 12:50:20,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319012606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:20,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:20,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772203867] [2024-06-14 12:50:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:20,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:21,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:21,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 78 transitions, 536 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:21,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:21,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:21,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:21,358 INFO L124 PetriNetUnfolderBase]: 196/460 cut-off events. [2024-06-14 12:50:21,359 INFO L125 PetriNetUnfolderBase]: For 19311/19313 co-relation queries the response was YES. [2024-06-14 12:50:21,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 460 events. 196/460 cut-off events. For 19311/19313 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2215 event pairs, 64 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 2182. Up to 360 conditions per place. [2024-06-14 12:50:21,361 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 67 selfloop transitions, 10 changer transitions 13/94 dead transitions. [2024-06-14 12:50:21,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 94 transitions, 756 flow [2024-06-14 12:50:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:50:21,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 12:50:21,362 INFO L175 Difference]: Start difference. First operand has 162 places, 78 transitions, 536 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:50:21,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 94 transitions, 756 flow [2024-06-14 12:50:21,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 94 transitions, 722 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:21,388 INFO L231 Difference]: Finished difference. Result has 158 places, 73 transitions, 484 flow [2024-06-14 12:50:21,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=484, PETRI_PLACES=158, PETRI_TRANSITIONS=73} [2024-06-14 12:50:21,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-14 12:50:21,388 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 73 transitions, 484 flow [2024-06-14 12:50:21,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:21,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:21,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:21,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:50:21,388 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:21,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:21,389 INFO L85 PathProgramCache]: Analyzing trace with hash 120841354, now seen corresponding path program 3 times [2024-06-14 12:50:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:21,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191590015] [2024-06-14 12:50:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:22,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:22,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191590015] [2024-06-14 12:50:22,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191590015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:22,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:22,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465369206] [2024-06-14 12:50:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:22,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:22,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:22,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:22,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 73 transitions, 484 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:22,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:22,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:22,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:22,981 INFO L124 PetriNetUnfolderBase]: 187/439 cut-off events. [2024-06-14 12:50:22,981 INFO L125 PetriNetUnfolderBase]: For 19267/19269 co-relation queries the response was YES. [2024-06-14 12:50:22,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 439 events. 187/439 cut-off events. For 19267/19269 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2071 event pairs, 62 based on Foata normal form. 8/446 useless extension candidates. Maximal degree in co-relation 2086. Up to 342 conditions per place. [2024-06-14 12:50:22,984 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 5 changer transitions 22/90 dead transitions. [2024-06-14 12:50:22,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 90 transitions, 698 flow [2024-06-14 12:50:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 12:50:22,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 12:50:22,985 INFO L175 Difference]: Start difference. First operand has 158 places, 73 transitions, 484 flow. Second operand 12 states and 142 transitions. [2024-06-14 12:50:22,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 90 transitions, 698 flow [2024-06-14 12:50:23,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 90 transitions, 662 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:50:23,008 INFO L231 Difference]: Finished difference. Result has 150 places, 65 transitions, 394 flow [2024-06-14 12:50:23,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=394, PETRI_PLACES=150, PETRI_TRANSITIONS=65} [2024-06-14 12:50:23,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-14 12:50:23,008 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 65 transitions, 394 flow [2024-06-14 12:50:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:23,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:23,009 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 12:50:23,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:50:23,009 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:23,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1197221964, now seen corresponding path program 4 times [2024-06-14 12:50:23,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:23,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236476083] [2024-06-14 12:50:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:23,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:24,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236476083] [2024-06-14 12:50:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236476083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:24,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:24,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:24,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366601246] [2024-06-14 12:50:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:24,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:24,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:24,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:24,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:24,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 65 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:24,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:24,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:24,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:24,764 INFO L124 PetriNetUnfolderBase]: 158/368 cut-off events. [2024-06-14 12:50:24,764 INFO L125 PetriNetUnfolderBase]: For 15341/15343 co-relation queries the response was YES. [2024-06-14 12:50:24,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 368 events. 158/368 cut-off events. For 15341/15343 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1647 event pairs, 49 based on Foata normal form. 8/375 useless extension candidates. Maximal degree in co-relation 1635. Up to 278 conditions per place. [2024-06-14 12:50:24,766 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 53 selfloop transitions, 9 changer transitions 12/78 dead transitions. [2024-06-14 12:50:24,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 78 transitions, 574 flow [2024-06-14 12:50:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:50:24,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 12:50:24,767 INFO L175 Difference]: Start difference. First operand has 150 places, 65 transitions, 394 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:50:24,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 78 transitions, 574 flow [2024-06-14 12:50:24,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 78 transitions, 530 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-14 12:50:24,788 INFO L231 Difference]: Finished difference. Result has 133 places, 61 transitions, 348 flow [2024-06-14 12:50:24,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=348, PETRI_PLACES=133, PETRI_TRANSITIONS=61} [2024-06-14 12:50:24,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-14 12:50:24,789 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 61 transitions, 348 flow [2024-06-14 12:50:24,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:24,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:24,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:24,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:50:24,789 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:24,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1712573918, now seen corresponding path program 5 times [2024-06-14 12:50:24,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:24,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580688486] [2024-06-14 12:50:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:24,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:26,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580688486] [2024-06-14 12:50:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580688486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:26,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:26,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256913540] [2024-06-14 12:50:26,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:26,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:26,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:26,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:26,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:26,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:26,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 61 transitions, 348 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:26,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:26,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:26,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:27,120 INFO L124 PetriNetUnfolderBase]: 150/350 cut-off events. [2024-06-14 12:50:27,120 INFO L125 PetriNetUnfolderBase]: For 15259/15259 co-relation queries the response was YES. [2024-06-14 12:50:27,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 350 events. 150/350 cut-off events. For 15259/15259 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1532 event pairs, 47 based on Foata normal form. 6/355 useless extension candidates. Maximal degree in co-relation 1557. Up to 260 conditions per place. [2024-06-14 12:50:27,122 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 50 selfloop transitions, 7 changer transitions 14/75 dead transitions. [2024-06-14 12:50:27,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 75 transitions, 524 flow [2024-06-14 12:50:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:50:27,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 12:50:27,122 INFO L175 Difference]: Start difference. First operand has 133 places, 61 transitions, 348 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:50:27,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 75 transitions, 524 flow [2024-06-14 12:50:27,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 75 transitions, 492 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:27,134 INFO L231 Difference]: Finished difference. Result has 125 places, 56 transitions, 311 flow [2024-06-14 12:50:27,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=311, PETRI_PLACES=125, PETRI_TRANSITIONS=56} [2024-06-14 12:50:27,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-14 12:50:27,135 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 56 transitions, 311 flow [2024-06-14 12:50:27,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:27,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:27,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:27,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:50:27,135 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:27,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:27,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1496942928, now seen corresponding path program 6 times [2024-06-14 12:50:27,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:27,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011572961] [2024-06-14 12:50:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:27,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:28,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:28,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011572961] [2024-06-14 12:50:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011572961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:28,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:28,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:28,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326763563] [2024-06-14 12:50:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:28,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:28,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:28,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:28,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:28,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:28,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 56 transitions, 311 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:28,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:28,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:28,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:28,917 INFO L124 PetriNetUnfolderBase]: 138/324 cut-off events. [2024-06-14 12:50:28,917 INFO L125 PetriNetUnfolderBase]: For 13049/13051 co-relation queries the response was YES. [2024-06-14 12:50:28,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 324 events. 138/324 cut-off events. For 13049/13051 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1374 event pairs, 45 based on Foata normal form. 8/331 useless extension candidates. Maximal degree in co-relation 1407. Up to 242 conditions per place. [2024-06-14 12:50:28,919 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 43 selfloop transitions, 3 changer transitions 20/70 dead transitions. [2024-06-14 12:50:28,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 70 transitions, 475 flow [2024-06-14 12:50:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:50:28,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:50:28,919 INFO L175 Difference]: Start difference. First operand has 125 places, 56 transitions, 311 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:50:28,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 70 transitions, 475 flow [2024-06-14 12:50:28,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 70 transitions, 451 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:28,929 INFO L231 Difference]: Finished difference. Result has 118 places, 49 transitions, 263 flow [2024-06-14 12:50:28,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=263, PETRI_PLACES=118, PETRI_TRANSITIONS=49} [2024-06-14 12:50:28,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-14 12:50:28,929 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 49 transitions, 263 flow [2024-06-14 12:50:28,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:28,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:28,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:28,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:50:28,930 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:28,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:28,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1698758748, now seen corresponding path program 7 times [2024-06-14 12:50:28,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:28,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649032227] [2024-06-14 12:50:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:28,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:30,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:30,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649032227] [2024-06-14 12:50:30,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649032227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:30,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:30,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:30,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079001058] [2024-06-14 12:50:30,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:30,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:30,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:30,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:30,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 49 transitions, 263 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:30,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:30,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:30,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:31,315 INFO L124 PetriNetUnfolderBase]: 108/254 cut-off events. [2024-06-14 12:50:31,315 INFO L125 PetriNetUnfolderBase]: For 8092/8094 co-relation queries the response was YES. [2024-06-14 12:50:31,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 254 events. 108/254 cut-off events. For 8092/8094 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 980 event pairs, 32 based on Foata normal form. 8/261 useless extension candidates. Maximal degree in co-relation 995. Up to 178 conditions per place. [2024-06-14 12:50:31,316 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 37 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2024-06-14 12:50:31,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 61 transitions, 403 flow [2024-06-14 12:50:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:50:31,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:50:31,317 INFO L175 Difference]: Start difference. First operand has 118 places, 49 transitions, 263 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:50:31,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 61 transitions, 403 flow [2024-06-14 12:50:31,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 61 transitions, 383 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:31,322 INFO L231 Difference]: Finished difference. Result has 106 places, 46 transitions, 251 flow [2024-06-14 12:50:31,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=251, PETRI_PLACES=106, PETRI_TRANSITIONS=46} [2024-06-14 12:50:31,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-14 12:50:31,323 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 46 transitions, 251 flow [2024-06-14 12:50:31,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:31,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:31,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:31,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:50:31,323 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:31,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:31,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2105130094, now seen corresponding path program 8 times [2024-06-14 12:50:31,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:31,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929309853] [2024-06-14 12:50:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:31,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:32,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929309853] [2024-06-14 12:50:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929309853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:32,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:32,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:32,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406151288] [2024-06-14 12:50:32,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:32,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:32,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:32,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:32,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:32,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 46 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:32,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:32,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:32,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:33,202 INFO L124 PetriNetUnfolderBase]: 101/241 cut-off events. [2024-06-14 12:50:33,203 INFO L125 PetriNetUnfolderBase]: For 5622/5622 co-relation queries the response was YES. [2024-06-14 12:50:33,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 241 events. 101/241 cut-off events. For 5622/5622 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 914 event pairs, 30 based on Foata normal form. 6/246 useless extension candidates. Maximal degree in co-relation 910. Up to 160 conditions per place. [2024-06-14 12:50:33,204 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 34 selfloop transitions, 7 changer transitions 14/59 dead transitions. [2024-06-14 12:50:33,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 59 transitions, 389 flow [2024-06-14 12:50:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:50:33,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:50:33,205 INFO L175 Difference]: Start difference. First operand has 106 places, 46 transitions, 251 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:50:33,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 59 transitions, 389 flow [2024-06-14 12:50:33,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 59 transitions, 363 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:33,210 INFO L231 Difference]: Finished difference. Result has 101 places, 41 transitions, 218 flow [2024-06-14 12:50:33,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=218, PETRI_PLACES=101, PETRI_TRANSITIONS=41} [2024-06-14 12:50:33,210 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-14 12:50:33,210 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 41 transitions, 218 flow [2024-06-14 12:50:33,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:33,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:33,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:33,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:50:33,211 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:33,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:33,211 INFO L85 PathProgramCache]: Analyzing trace with hash -583857222, now seen corresponding path program 9 times [2024-06-14 12:50:33,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:33,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759066353] [2024-06-14 12:50:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:34,659 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 12:50:34,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759066353] [2024-06-14 12:50:34,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759066353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:34,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:34,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:34,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344975385] [2024-06-14 12:50:34,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:34,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:34,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:34,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:34,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 41 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:34,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:34,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:34,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:35,010 INFO L124 PetriNetUnfolderBase]: 89/215 cut-off events. [2024-06-14 12:50:35,011 INFO L125 PetriNetUnfolderBase]: For 4748/4748 co-relation queries the response was YES. [2024-06-14 12:50:35,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 215 events. 89/215 cut-off events. For 4748/4748 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 768 event pairs, 28 based on Foata normal form. 6/220 useless extension candidates. Maximal degree in co-relation 812. Up to 142 conditions per place. [2024-06-14 12:50:35,011 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 29 selfloop transitions, 4 changer transitions 17/54 dead transitions. [2024-06-14 12:50:35,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 54 transitions, 346 flow [2024-06-14 12:50:35,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:50:35,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:50:35,012 INFO L175 Difference]: Start difference. First operand has 101 places, 41 transitions, 218 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:50:35,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 54 transitions, 346 flow [2024-06-14 12:50:35,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 54 transitions, 322 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:35,016 INFO L231 Difference]: Finished difference. Result has 94 places, 35 transitions, 177 flow [2024-06-14 12:50:35,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=177, PETRI_PLACES=94, PETRI_TRANSITIONS=35} [2024-06-14 12:50:35,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-14 12:50:35,016 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 35 transitions, 177 flow [2024-06-14 12:50:35,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:35,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:35,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:35,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:50:35,017 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:35,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:35,017 INFO L85 PathProgramCache]: Analyzing trace with hash -327738574, now seen corresponding path program 10 times [2024-06-14 12:50:35,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:35,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554635273] [2024-06-14 12:50:35,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:35,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:36,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:36,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554635273] [2024-06-14 12:50:36,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554635273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:36,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:36,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613813165] [2024-06-14 12:50:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:36,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:36,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:36,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 35 transitions, 177 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:36,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:36,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:36,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:36,969 INFO L124 PetriNetUnfolderBase]: 76/184 cut-off events. [2024-06-14 12:50:36,969 INFO L125 PetriNetUnfolderBase]: For 3590/3594 co-relation queries the response was YES. [2024-06-14 12:50:36,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 184 events. 76/184 cut-off events. For 3590/3594 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 612 event pairs, 28 based on Foata normal form. 10/193 useless extension candidates. Maximal degree in co-relation 690. Up to 105 conditions per place. [2024-06-14 12:50:36,970 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 22 selfloop transitions, 10 changer transitions 11/47 dead transitions. [2024-06-14 12:50:36,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 47 transitions, 289 flow [2024-06-14 12:50:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:50:36,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 12:50:36,971 INFO L175 Difference]: Start difference. First operand has 94 places, 35 transitions, 177 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:50:36,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 47 transitions, 289 flow [2024-06-14 12:50:36,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 47 transitions, 271 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:36,973 INFO L231 Difference]: Finished difference. Result has 85 places, 31 transitions, 162 flow [2024-06-14 12:50:36,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=162, PETRI_PLACES=85, PETRI_TRANSITIONS=31} [2024-06-14 12:50:36,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-14 12:50:36,974 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 31 transitions, 162 flow [2024-06-14 12:50:36,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:36,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:36,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:36,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 12:50:36,974 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:36,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1091888750, now seen corresponding path program 11 times [2024-06-14 12:50:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:36,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660817646] [2024-06-14 12:50:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:36,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:40,270 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 12:50:40,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660817646] [2024-06-14 12:50:40,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660817646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:40,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:40,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:40,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276123118] [2024-06-14 12:50:40,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:40,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:40,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:40,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:40,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 31 transitions, 162 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:40,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:40,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:40,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:40,916 INFO L124 PetriNetUnfolderBase]: 68/166 cut-off events. [2024-06-14 12:50:40,916 INFO L125 PetriNetUnfolderBase]: For 2322/2326 co-relation queries the response was YES. [2024-06-14 12:50:40,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 166 events. 68/166 cut-off events. For 2322/2326 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 521 event pairs, 28 based on Foata normal form. 10/175 useless extension candidates. Maximal degree in co-relation 606. Up to 95 conditions per place. [2024-06-14 12:50:40,917 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 19 selfloop transitions, 10 changer transitions 10/43 dead transitions. [2024-06-14 12:50:40,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 43 transitions, 266 flow [2024-06-14 12:50:40,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:50:40,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 12:50:40,917 INFO L175 Difference]: Start difference. First operand has 85 places, 31 transitions, 162 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:50:40,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 43 transitions, 266 flow [2024-06-14 12:50:40,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 43 transitions, 238 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:40,920 INFO L231 Difference]: Finished difference. Result has 79 places, 28 transitions, 143 flow [2024-06-14 12:50:40,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=143, PETRI_PLACES=79, PETRI_TRANSITIONS=28} [2024-06-14 12:50:40,924 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-14 12:50:40,924 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 28 transitions, 143 flow [2024-06-14 12:50:40,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:40,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:40,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:40,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 12:50:40,925 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:40,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash 753116892, now seen corresponding path program 12 times [2024-06-14 12:50:40,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:40,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643034553] [2024-06-14 12:50:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:40,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:42,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:42,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643034553] [2024-06-14 12:50:42,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643034553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:42,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:42,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:42,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117536475] [2024-06-14 12:50:42,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:42,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:42,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:42,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:42,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:42,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:42,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 28 transitions, 143 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:42,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:42,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:42,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:42,993 INFO L124 PetriNetUnfolderBase]: 46/120 cut-off events. [2024-06-14 12:50:42,993 INFO L125 PetriNetUnfolderBase]: For 1052/1052 co-relation queries the response was YES. [2024-06-14 12:50:42,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 120 events. 46/120 cut-off events. For 1052/1052 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 4 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 384. Up to 38 conditions per place. [2024-06-14 12:50:42,994 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 18 selfloop transitions, 8 changer transitions 11/41 dead transitions. [2024-06-14 12:50:42,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 41 transitions, 245 flow [2024-06-14 12:50:42,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:42,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:50:42,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 12:50:42,995 INFO L175 Difference]: Start difference. First operand has 79 places, 28 transitions, 143 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:50:42,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 41 transitions, 245 flow [2024-06-14 12:50:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 41 transitions, 219 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:42,996 INFO L231 Difference]: Finished difference. Result has 75 places, 23 transitions, 110 flow [2024-06-14 12:50:42,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=110, PETRI_PLACES=75, PETRI_TRANSITIONS=23} [2024-06-14 12:50:43,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-14 12:50:43,007 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 23 transitions, 110 flow [2024-06-14 12:50:43,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:43,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:43,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:43,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 12:50:43,007 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:50:43,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1826772786, now seen corresponding path program 13 times [2024-06-14 12:50:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:43,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657411440] [2024-06-14 12:50:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:44,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:44,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657411440] [2024-06-14 12:50:44,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657411440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:44,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:44,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:44,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834497138] [2024-06-14 12:50:44,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:44,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:44,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:44,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:44,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:50:44,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 23 transitions, 110 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:44,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:44,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:50:44,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:44,978 INFO L124 PetriNetUnfolderBase]: 19/59 cut-off events. [2024-06-14 12:50:44,978 INFO L125 PetriNetUnfolderBase]: For 390/390 co-relation queries the response was YES. [2024-06-14 12:50:44,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 59 events. 19/59 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 6/64 useless extension candidates. Maximal degree in co-relation 160. Up to 24 conditions per place. [2024-06-14 12:50:44,979 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-14 12:50:44,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 30 transitions, 154 flow [2024-06-14 12:50:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 12:50:44,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-14 12:50:44,979 INFO L175 Difference]: Start difference. First operand has 75 places, 23 transitions, 110 flow. Second operand 11 states and 115 transitions. [2024-06-14 12:50:44,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 30 transitions, 154 flow [2024-06-14 12:50:44,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 30 transitions, 120 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-14 12:50:44,980 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-06-14 12:50:44,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-06-14 12:50:44,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-14 12:50:44,980 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-06-14 12:50:44,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:44,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:50:44,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:50:44,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:50:44,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:50:44,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 12:50:44,983 INFO L445 BasicCegarLoop]: Path program histogram: [32, 20, 17, 13, 10, 10, 7, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:50:44,986 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:50:44,986 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:50:44,988 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:50:44,989 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:50:44,989 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:50:44 BasicIcfg [2024-06-14 12:50:44,989 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:50:44,990 INFO L158 Benchmark]: Toolchain (without parser) took 210559.47ms. Allocated memory was 157.3MB in the beginning and 941.6MB in the end (delta: 784.3MB). Free memory was 126.2MB in the beginning and 619.9MB in the end (delta: -493.7MB). Peak memory consumption was 291.7MB. Max. memory is 16.1GB. [2024-06-14 12:50:44,990 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 92.3MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:50:44,990 INFO L158 Benchmark]: Witness Parser took 0.53ms. Allocated memory is still 157.3MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:50:44,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.50ms. Allocated memory is still 157.3MB. Free memory was 125.5MB in the beginning and 106.3MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-14 12:50:44,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.10ms. Allocated memory is still 157.3MB. Free memory was 106.3MB in the beginning and 103.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:50:44,990 INFO L158 Benchmark]: Boogie Preprocessor took 33.27ms. Allocated memory is still 157.3MB. Free memory was 103.0MB in the beginning and 99.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:50:44,991 INFO L158 Benchmark]: RCFGBuilder took 687.22ms. Allocated memory was 157.3MB in the beginning and 211.8MB in the end (delta: 54.5MB). Free memory was 99.5MB in the beginning and 148.6MB in the end (delta: -49.2MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2024-06-14 12:50:44,991 INFO L158 Benchmark]: TraceAbstraction took 209215.81ms. Allocated memory was 211.8MB in the beginning and 941.6MB in the end (delta: 729.8MB). Free memory was 147.6MB in the beginning and 619.9MB in the end (delta: -472.4MB). Peak memory consumption was 257.4MB. Max. memory is 16.1GB. [2024-06-14 12:50:44,992 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 92.3MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.53ms. Allocated memory is still 157.3MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.50ms. Allocated memory is still 157.3MB. Free memory was 125.5MB in the beginning and 106.3MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.10ms. Allocated memory is still 157.3MB. Free memory was 106.3MB in the beginning and 103.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.27ms. Allocated memory is still 157.3MB. Free memory was 103.0MB in the beginning and 99.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 687.22ms. Allocated memory was 157.3MB in the beginning and 211.8MB in the end (delta: 54.5MB). Free memory was 99.5MB in the beginning and 148.6MB in the end (delta: -49.2MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * TraceAbstraction took 209215.81ms. Allocated memory was 211.8MB in the beginning and 941.6MB in the end (delta: 729.8MB). Free memory was 147.6MB in the beginning and 619.9MB in the end (delta: -472.4MB). Peak memory consumption was 257.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 826]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 827]: 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: 209.1s, OverallIterations: 138, TraceHistogramMax: 1, PathProgramHistogramMax: 32, EmptinessCheckTime: 0.0s, AutomataDifference: 59.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7932 SdHoareTripleChecker+Valid, 31.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6764 mSDsluCounter, 2430 SdHoareTripleChecker+Invalid, 27.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2170 mSDsCounter, 1218 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55783 IncrementalHoareTripleChecker+Invalid, 57001 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1218 mSolverCounterUnsat, 260 mSDtfsCounter, 55783 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1483 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1477 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2644 ImplicationChecksByTransitivity, 40.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2101occurred in iteration=65, InterpolantAutomatonStates: 1341, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 147.3s InterpolantComputationTime, 2437 NumberOfCodeBlocks, 2437 NumberOfCodeBlocksAsserted, 138 NumberOfCheckSat, 2299 ConstructedInterpolants, 0 QuantifiedInterpolants, 108233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 138 InterpolantComputations, 138 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 12:50:45,050 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