./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 20:13:39,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:13:40,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:13:40,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:13:40,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:13:40,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:13:40,174 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:13:40,175 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:13:40,175 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:13:40,176 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:13:40,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:13:40,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:13:40,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:13:40,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:13:40,178 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:13:40,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:13:40,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:13:40,179 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:13:40,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:13:40,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:13:40,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:13:40,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:13:40,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:13:40,181 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:13:40,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:13:40,181 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:13:40,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:13:40,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:13:40,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:13:40,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:13:40,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:13:40,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:13:40,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:13:40,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:13:40,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:13:40,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:13:40,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:13:40,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:13:40,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:13:40,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:13:40,186 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:13:40,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:13:40,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:13:40,188 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:13:40,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:13:40,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:13:40,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:13:40,442 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:13:40,442 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:13:40,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-03 20:13:41,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:13:41,913 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:13:41,913 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-03 20:13:41,928 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6333ef68c/1895d87c52a94e04af28bfa8b405953e/FLAG5bd9c8489 [2024-06-03 20:13:41,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6333ef68c/1895d87c52a94e04af28bfa8b405953e [2024-06-03 20:13:41,945 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:13:41,948 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:13:41,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-03 20:13:42,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:13:42,100 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:13:42,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:13:42,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:13:42,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:13:42,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:13:41" (1/2) ... [2024-06-03 20:13:42,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188972e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:13:42, skipping insertion in model container [2024-06-03 20:13:42,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:13:41" (1/2) ... [2024-06-03 20:13:42,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a97dc07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:13:42, skipping insertion in model container [2024-06-03 20:13:42,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:13:42" (2/2) ... [2024-06-03 20:13:42,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188972e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42, skipping insertion in model container [2024-06-03 20:13:42,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:13:42" (2/2) ... [2024-06-03 20:13:42,112 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:13:42,186 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:13:42,188 INFO L97 edCorrectnessWitness]: Location invariant before [L810-L810] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-03 20:13:42,188 INFO L97 edCorrectnessWitness]: Location invariant before [L811-L811] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-03 20:13:42,188 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:13:42,188 INFO L106 edCorrectnessWitness]: ghost_update [L808-L808] multithreaded = 1; [2024-06-03 20:13:42,235 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:13:42,545 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:13:42,558 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 20:13:42,678 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:13:42,726 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:13:42,727 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42 WrapperNode [2024-06-03 20:13:42,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:13:42,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:13:42,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:13:42,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:13:42,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,811 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-03 20:13:42,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:13:42,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:13:42,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:13:42,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:13:42,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,860 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 20:13:42,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:13:42,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:13:42,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:13:42,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:13:42,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (1/1) ... [2024-06-03 20:13:42,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:13:42,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:13:42,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 20:13:42,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 20:13:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 20:13:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:13:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 20:13:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 20:13:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 20:13:42,975 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 20:13:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:13:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 20:13:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:13:42,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:13:42,977 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 20:13:43,132 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:13:43,134 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:13:43,405 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:13:43,405 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:13:43,604 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:13:43,604 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 20:13:43,607 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:13:43 BoogieIcfgContainer [2024-06-03 20:13:43,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:13:43,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:13:43,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:13:43,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:13:43,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:13:41" (1/4) ... [2024-06-03 20:13:43,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d42ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:13:43, skipping insertion in model container [2024-06-03 20:13:43,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:13:42" (2/4) ... [2024-06-03 20:13:43,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d42ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:13:43, skipping insertion in model container [2024-06-03 20:13:43,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:13:42" (3/4) ... [2024-06-03 20:13:43,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d42ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:13:43, skipping insertion in model container [2024-06-03 20:13:43,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:13:43" (4/4) ... [2024-06-03 20:13:43,623 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-03 20:13:43,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:13:43,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 20:13:43,639 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:13:43,693 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 20:13:43,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-03 20:13:43,771 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-03 20:13:43,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:13:43,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 20:13:43,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-03 20:13:43,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-03 20:13:43,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:13:43,800 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;@3d58b7a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:13:43,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 20:13:43,806 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:13:43,806 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 20:13:43,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:13:43,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:43,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:13:43,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:43,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1470245525, now seen corresponding path program 1 times [2024-06-03 20:13:43,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:43,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785888956] [2024-06-03 20:13:43,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:43,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:44,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:44,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785888956] [2024-06-03 20:13:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785888956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:13:44,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520874691] [2024-06-03 20:13:44,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:44,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:13:44,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:44,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:13:44,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:13:44,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-03 20:13:44,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:44,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:44,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-03 20:13:44,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:44,996 INFO L124 PetriNetUnfolderBase]: 131/247 cut-off events. [2024-06-03 20:13:44,996 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-03 20:13:44,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 247 events. 131/247 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 848 event pairs, 79 based on Foata normal form. 3/244 useless extension candidates. Maximal degree in co-relation 495. Up to 231 conditions per place. [2024-06-03 20:13:45,002 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 24 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-03 20:13:45,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 123 flow [2024-06-03 20:13:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:13:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:13:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-03 20:13:45,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-03 20:13:45,016 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 53 transitions. [2024-06-03 20:13:45,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 123 flow [2024-06-03 20:13:45,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:13:45,021 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-03 20:13:45,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-03 20:13:45,028 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-03 20:13:45,028 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-03 20:13:45,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:45,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:45,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:45,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:13:45,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:45,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash -138254860, now seen corresponding path program 1 times [2024-06-03 20:13:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:45,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477333396] [2024-06-03 20:13:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:45,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:45,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477333396] [2024-06-03 20:13:45,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477333396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:45,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:45,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:13:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898345113] [2024-06-03 20:13:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:45,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:13:45,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:45,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:13:45,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:13:45,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-03 20:13:45,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:45,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:45,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-03 20:13:45,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:45,819 INFO L124 PetriNetUnfolderBase]: 134/252 cut-off events. [2024-06-03 20:13:45,820 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-06-03 20:13:45,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 252 events. 134/252 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 871 event pairs, 53 based on Foata normal form. 4/255 useless extension candidates. Maximal degree in co-relation 580. Up to 227 conditions per place. [2024-06-03 20:13:45,825 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 30 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-03 20:13:45,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 176 flow [2024-06-03 20:13:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:13:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:13:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-03 20:13:45,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-03 20:13:45,828 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 67 transitions. [2024-06-03 20:13:45,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 176 flow [2024-06-03 20:13:45,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:13:45,830 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 106 flow [2024-06-03 20:13:45,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, 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=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2024-06-03 20:13:45,831 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-06-03 20:13:45,831 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 106 flow [2024-06-03 20:13:45,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:45,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:45,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:45,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:13:45,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:45,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash 9067822, now seen corresponding path program 1 times [2024-06-03 20:13:45,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:45,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295297772] [2024-06-03 20:13:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:45,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:46,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:46,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295297772] [2024-06-03 20:13:46,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295297772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:46,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:46,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:13:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111806713] [2024-06-03 20:13:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:46,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:13:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:46,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:13:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:13:46,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-03 20:13:46,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2024-06-03 20:13:46,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:46,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-03 20:13:46,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:46,462 INFO L124 PetriNetUnfolderBase]: 154/285 cut-off events. [2024-06-03 20:13:46,463 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-06-03 20:13:46,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 285 events. 154/285 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 952 event pairs, 58 based on Foata normal form. 2/286 useless extension candidates. Maximal degree in co-relation 761. Up to 258 conditions per place. [2024-06-03 20:13:46,465 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2024-06-03 20:13:46,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 245 flow [2024-06-03 20:13:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:13:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:13:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-03 20:13:46,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 20:13:46,467 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 106 flow. Second operand 5 states and 75 transitions. [2024-06-03 20:13:46,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 245 flow [2024-06-03 20:13:46,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 238 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-03 20:13:46,470 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 155 flow [2024-06-03 20:13:46,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-06-03 20:13:46,471 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2024-06-03 20:13:46,471 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 155 flow [2024-06-03 20:13:46,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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) [2024-06-03 20:13:46,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:46,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:46,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:13:46,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:46,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash 946038819, now seen corresponding path program 1 times [2024-06-03 20:13:46,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:46,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389804310] [2024-06-03 20:13:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:46,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:47,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:47,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389804310] [2024-06-03 20:13:47,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389804310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:47,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:47,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:13:47,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685044992] [2024-06-03 20:13:47,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:47,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:13:47,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:47,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:13:47,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:13:47,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-03 20:13:47,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:47,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:47,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-03 20:13:47,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:47,386 INFO L124 PetriNetUnfolderBase]: 151/280 cut-off events. [2024-06-03 20:13:47,387 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-06-03 20:13:47,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 280 events. 151/280 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 930 event pairs, 40 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 833. Up to 244 conditions per place. [2024-06-03 20:13:47,390 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2024-06-03 20:13:47,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 301 flow [2024-06-03 20:13:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:13:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:13:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-03 20:13:47,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-03 20:13:47,397 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 155 flow. Second operand 6 states and 88 transitions. [2024-06-03 20:13:47,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 301 flow [2024-06-03 20:13:47,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-03 20:13:47,402 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 190 flow [2024-06-03 20:13:47,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-06-03 20:13:47,405 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-03 20:13:47,405 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 190 flow [2024-06-03 20:13:47,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:47,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:47,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:47,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 20:13:47,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:47,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash -737566435, now seen corresponding path program 1 times [2024-06-03 20:13:47,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:47,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20099807] [2024-06-03 20:13:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:47,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:48,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20099807] [2024-06-03 20:13:48,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20099807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:48,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:48,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:13:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220281776] [2024-06-03 20:13:48,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:48,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:13:48,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:48,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:13:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:13:48,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-03 20:13:48,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:48,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:48,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-03 20:13:48,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:48,559 INFO L124 PetriNetUnfolderBase]: 147/272 cut-off events. [2024-06-03 20:13:48,559 INFO L125 PetriNetUnfolderBase]: For 423/423 co-relation queries the response was YES. [2024-06-03 20:13:48,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 272 events. 147/272 cut-off events. For 423/423 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 886 event pairs, 21 based on Foata normal form. 4/275 useless extension candidates. Maximal degree in co-relation 883. Up to 218 conditions per place. [2024-06-03 20:13:48,562 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-03 20:13:48,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 326 flow [2024-06-03 20:13:48,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:13:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:13:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-03 20:13:48,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-03 20:13:48,563 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 190 flow. Second operand 7 states and 96 transitions. [2024-06-03 20:13:48,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 326 flow [2024-06-03 20:13:48,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 309 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-03 20:13:48,569 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 187 flow [2024-06-03 20:13:48,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=7, PETRI_FLOW=187, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2024-06-03 20:13:48,571 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-03 20:13:48,573 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 187 flow [2024-06-03 20:13:48,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:48,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:48,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:48,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 20:13:48,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:48,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2137059725, now seen corresponding path program 1 times [2024-06-03 20:13:48,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:48,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483695806] [2024-06-03 20:13:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:48,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:49,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:49,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483695806] [2024-06-03 20:13:49,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483695806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:49,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:49,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:13:49,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170813420] [2024-06-03 20:13:49,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:49,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:13:49,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:49,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:13:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:13:49,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:13:49,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:49,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:49,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:13:49,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:49,579 INFO L124 PetriNetUnfolderBase]: 166/303 cut-off events. [2024-06-03 20:13:49,579 INFO L125 PetriNetUnfolderBase]: For 562/562 co-relation queries the response was YES. [2024-06-03 20:13:49,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 303 events. 166/303 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1026 event pairs, 39 based on Foata normal form. 3/305 useless extension candidates. Maximal degree in co-relation 1016. Up to 235 conditions per place. [2024-06-03 20:13:49,582 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 43 selfloop transitions, 14 changer transitions 0/59 dead transitions. [2024-06-03 20:13:49,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 383 flow [2024-06-03 20:13:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:13:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:13:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-03 20:13:49,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-03 20:13:49,584 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 187 flow. Second operand 7 states and 93 transitions. [2024-06-03 20:13:49,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 383 flow [2024-06-03 20:13:49,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 356 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 20:13:49,587 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 217 flow [2024-06-03 20:13:49,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-03 20:13:49,587 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-03 20:13:49,588 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 217 flow [2024-06-03 20:13:49,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:49,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:49,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:49,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 20:13:49,588 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:49,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:49,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1111055291, now seen corresponding path program 2 times [2024-06-03 20:13:49,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:49,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396244065] [2024-06-03 20:13:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:49,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:50,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396244065] [2024-06-03 20:13:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396244065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:50,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:50,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:13:50,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472479290] [2024-06-03 20:13:50,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:50,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:13:50,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:50,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:13:50,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:13:50,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:13:50,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:50,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:50,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:13:50,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:50,676 INFO L124 PetriNetUnfolderBase]: 184/333 cut-off events. [2024-06-03 20:13:50,676 INFO L125 PetriNetUnfolderBase]: For 834/834 co-relation queries the response was YES. [2024-06-03 20:13:50,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 333 events. 184/333 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1161 event pairs, 40 based on Foata normal form. 3/335 useless extension candidates. Maximal degree in co-relation 1186. Up to 281 conditions per place. [2024-06-03 20:13:50,679 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 44 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-03 20:13:50,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 401 flow [2024-06-03 20:13:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:13:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:13:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-03 20:13:50,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-03 20:13:50,681 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 217 flow. Second operand 7 states and 88 transitions. [2024-06-03 20:13:50,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 401 flow [2024-06-03 20:13:50,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 382 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-03 20:13:50,686 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 261 flow [2024-06-03 20:13:50,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=261, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-03 20:13:50,687 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-03 20:13:50,687 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 261 flow [2024-06-03 20:13:50,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:50,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:50,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:50,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 20:13:50,689 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:50,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1264656335, now seen corresponding path program 1 times [2024-06-03 20:13:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:50,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278939594] [2024-06-03 20:13:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:51,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278939594] [2024-06-03 20:13:51,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278939594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:51,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:51,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:13:51,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114590852] [2024-06-03 20:13:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:51,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:13:51,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:13:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:13:51,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:13:51,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 261 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:51,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:51,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:13:51,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:51,972 INFO L124 PetriNetUnfolderBase]: 180/327 cut-off events. [2024-06-03 20:13:51,972 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2024-06-03 20:13:51,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 327 events. 180/327 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1147 event pairs, 33 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 1226. Up to 274 conditions per place. [2024-06-03 20:13:51,975 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 41 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-06-03 20:13:51,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 409 flow [2024-06-03 20:13:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:13:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:13:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-06-03 20:13:51,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-03 20:13:51,979 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 261 flow. Second operand 5 states and 68 transitions. [2024-06-03 20:13:51,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 409 flow [2024-06-03 20:13:51,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 380 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 20:13:51,985 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 286 flow [2024-06-03 20:13:51,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-03 20:13:51,987 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-06-03 20:13:51,987 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 286 flow [2024-06-03 20:13:51,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:51,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:51,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:51,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 20:13:51,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:51,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1242550421, now seen corresponding path program 3 times [2024-06-03 20:13:51,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:51,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540384522] [2024-06-03 20:13:51,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:51,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:52,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:52,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540384522] [2024-06-03 20:13:52,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540384522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:52,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:52,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:13:52,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206759567] [2024-06-03 20:13:52,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:52,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:13:52,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:52,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:13:52,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:13:52,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:13:52,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:52,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:52,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:13:52,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:52,973 INFO L124 PetriNetUnfolderBase]: 174/318 cut-off events. [2024-06-03 20:13:52,973 INFO L125 PetriNetUnfolderBase]: For 1141/1141 co-relation queries the response was YES. [2024-06-03 20:13:52,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 318 events. 174/318 cut-off events. For 1141/1141 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1102 event pairs, 40 based on Foata normal form. 3/320 useless extension candidates. Maximal degree in co-relation 1233. Up to 266 conditions per place. [2024-06-03 20:13:52,977 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 46 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-03 20:13:52,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 446 flow [2024-06-03 20:13:52,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:13:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:13:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-03 20:13:52,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-03 20:13:52,979 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 286 flow. Second operand 6 states and 81 transitions. [2024-06-03 20:13:52,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 446 flow [2024-06-03 20:13:52,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 424 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-03 20:13:52,984 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 298 flow [2024-06-03 20:13:52,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-03 20:13:52,985 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-03 20:13:52,986 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 298 flow [2024-06-03 20:13:52,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:52,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:52,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:52,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 20:13:52,987 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:52,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1264647407, now seen corresponding path program 1 times [2024-06-03 20:13:52,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:52,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429990823] [2024-06-03 20:13:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:52,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:54,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:54,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429990823] [2024-06-03 20:13:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429990823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:54,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:13:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846178415] [2024-06-03 20:13:54,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:54,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:13:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:54,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:13:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:13:54,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:13:54,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:54,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:54,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:13:54,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:54,433 INFO L124 PetriNetUnfolderBase]: 171/313 cut-off events. [2024-06-03 20:13:54,433 INFO L125 PetriNetUnfolderBase]: For 1322/1322 co-relation queries the response was YES. [2024-06-03 20:13:54,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 313 events. 171/313 cut-off events. For 1322/1322 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1069 event pairs, 40 based on Foata normal form. 2/314 useless extension candidates. Maximal degree in co-relation 1245. Up to 289 conditions per place. [2024-06-03 20:13:54,436 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 43 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-06-03 20:13:54,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 414 flow [2024-06-03 20:13:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:13:54,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:13:54,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-06-03 20:13:54,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-03 20:13:54,437 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 298 flow. Second operand 5 states and 61 transitions. [2024-06-03 20:13:54,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 414 flow [2024-06-03 20:13:54,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 375 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 20:13:54,441 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 277 flow [2024-06-03 20:13:54,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=277, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-03 20:13:54,442 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-03 20:13:54,442 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 277 flow [2024-06-03 20:13:54,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:54,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:54,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:54,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 20:13:54,443 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:54,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1079636854, now seen corresponding path program 1 times [2024-06-03 20:13:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:54,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415139737] [2024-06-03 20:13:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:55,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:55,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415139737] [2024-06-03 20:13:55,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415139737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:55,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:55,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:13:55,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360145703] [2024-06-03 20:13:55,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:55,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:13:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:55,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:13:55,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:13:55,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:13:55,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 277 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:55,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:55,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:13:55,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:55,667 INFO L124 PetriNetUnfolderBase]: 190/344 cut-off events. [2024-06-03 20:13:55,667 INFO L125 PetriNetUnfolderBase]: For 1407/1407 co-relation queries the response was YES. [2024-06-03 20:13:55,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 344 events. 190/344 cut-off events. For 1407/1407 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1233 event pairs, 34 based on Foata normal form. 3/346 useless extension candidates. Maximal degree in co-relation 1304. Up to 218 conditions per place. [2024-06-03 20:13:55,671 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 50 selfloop transitions, 26 changer transitions 0/78 dead transitions. [2024-06-03 20:13:55,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 547 flow [2024-06-03 20:13:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:13:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:13:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-03 20:13:55,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-06-03 20:13:55,673 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 277 flow. Second operand 9 states and 119 transitions. [2024-06-03 20:13:55,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 547 flow [2024-06-03 20:13:55,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 533 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 20:13:55,678 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 370 flow [2024-06-03 20:13:55,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-06-03 20:13:55,679 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-03 20:13:55,679 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 370 flow [2024-06-03 20:13:55,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:55,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:55,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:55,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 20:13:55,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:55,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1821513992, now seen corresponding path program 2 times [2024-06-03 20:13:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:55,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479358710] [2024-06-03 20:13:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:55,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:56,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:56,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479358710] [2024-06-03 20:13:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479358710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:56,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:13:56,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240626566] [2024-06-03 20:13:56,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:56,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:13:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:56,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:13:56,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:13:56,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:13:56,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 370 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:56,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:56,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:13:56,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:56,990 INFO L124 PetriNetUnfolderBase]: 199/359 cut-off events. [2024-06-03 20:13:56,991 INFO L125 PetriNetUnfolderBase]: For 1787/1787 co-relation queries the response was YES. [2024-06-03 20:13:56,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 359 events. 199/359 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1286 event pairs, 39 based on Foata normal form. 3/361 useless extension candidates. Maximal degree in co-relation 1553. Up to 296 conditions per place. [2024-06-03 20:13:56,994 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 54 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-03 20:13:56,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 593 flow [2024-06-03 20:13:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:13:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:13:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-03 20:13:56,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-03 20:13:56,995 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 370 flow. Second operand 8 states and 99 transitions. [2024-06-03 20:13:56,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 593 flow [2024-06-03 20:13:57,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 550 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-03 20:13:57,004 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 396 flow [2024-06-03 20:13:57,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-03 20:13:57,005 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-03 20:13:57,005 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 396 flow [2024-06-03 20:13:57,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:57,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:57,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:57,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 20:13:57,006 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:57,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash -556789555, now seen corresponding path program 1 times [2024-06-03 20:13:57,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:57,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666432128] [2024-06-03 20:13:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:57,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:57,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:57,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666432128] [2024-06-03 20:13:57,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666432128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:57,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:57,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:13:57,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764253887] [2024-06-03 20:13:57,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:57,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:13:57,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:57,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:13:57,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:13:57,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:13:57,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 396 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:57,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:57,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:13:57,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:58,219 INFO L124 PetriNetUnfolderBase]: 195/353 cut-off events. [2024-06-03 20:13:58,219 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2024-06-03 20:13:58,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 353 events. 195/353 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1262 event pairs, 40 based on Foata normal form. 2/354 useless extension candidates. Maximal degree in co-relation 1559. Up to 279 conditions per place. [2024-06-03 20:13:58,223 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 53 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2024-06-03 20:13:58,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 606 flow [2024-06-03 20:13:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:13:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:13:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-03 20:13:58,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-03 20:13:58,224 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 396 flow. Second operand 6 states and 83 transitions. [2024-06-03 20:13:58,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 606 flow [2024-06-03 20:13:58,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 572 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 20:13:58,231 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 429 flow [2024-06-03 20:13:58,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=429, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-03 20:13:58,231 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-03 20:13:58,232 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 429 flow [2024-06-03 20:13:58,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:58,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:58,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:58,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 20:13:58,232 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:58,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:58,233 INFO L85 PathProgramCache]: Analyzing trace with hash -556997100, now seen corresponding path program 3 times [2024-06-03 20:13:58,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:58,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268692227] [2024-06-03 20:13:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:58,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:13:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:13:59,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:13:59,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268692227] [2024-06-03 20:13:59,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268692227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:13:59,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:13:59,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:13:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825846633] [2024-06-03 20:13:59,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:13:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:13:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:13:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:13:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:13:59,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:13:59,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 429 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:59,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:13:59,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:13:59,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:13:59,505 INFO L124 PetriNetUnfolderBase]: 189/344 cut-off events. [2024-06-03 20:13:59,505 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2024-06-03 20:13:59,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 344 events. 189/344 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1230 event pairs, 41 based on Foata normal form. 3/346 useless extension candidates. Maximal degree in co-relation 1543. Up to 272 conditions per place. [2024-06-03 20:13:59,508 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 18 changer transitions 0/77 dead transitions. [2024-06-03 20:13:59,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 641 flow [2024-06-03 20:13:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:13:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:13:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-03 20:13:59,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-03 20:13:59,510 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 429 flow. Second operand 7 states and 96 transitions. [2024-06-03 20:13:59,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 641 flow [2024-06-03 20:13:59,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 593 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-03 20:13:59,520 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 426 flow [2024-06-03 20:13:59,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=426, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-06-03 20:13:59,521 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-03 20:13:59,521 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 426 flow [2024-06-03 20:13:59,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:13:59,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:13:59,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:13:59,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 20:13:59,522 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:13:59,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:13:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1840779308, now seen corresponding path program 1 times [2024-06-03 20:13:59,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:13:59,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035200905] [2024-06-03 20:13:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:13:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:13:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:00,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035200905] [2024-06-03 20:14:00,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035200905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:00,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:00,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:00,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165561672] [2024-06-03 20:14:00,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:00,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:00,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:00,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:00,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:00,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:00,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 426 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:00,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:00,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:00,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:00,763 INFO L124 PetriNetUnfolderBase]: 193/352 cut-off events. [2024-06-03 20:14:00,764 INFO L125 PetriNetUnfolderBase]: For 1699/1699 co-relation queries the response was YES. [2024-06-03 20:14:00,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 352 events. 193/352 cut-off events. For 1699/1699 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1269 event pairs, 27 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 1557. Up to 248 conditions per place. [2024-06-03 20:14:00,767 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 62 selfloop transitions, 24 changer transitions 0/88 dead transitions. [2024-06-03 20:14:00,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 767 flow [2024-06-03 20:14:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:14:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:14:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 20:14:00,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 20:14:00,768 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 426 flow. Second operand 9 states and 108 transitions. [2024-06-03 20:14:00,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 767 flow [2024-06-03 20:14:00,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 709 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 20:14:00,774 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 558 flow [2024-06-03 20:14:00,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-06-03 20:14:00,776 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-03 20:14:00,776 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 558 flow [2024-06-03 20:14:00,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:00,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:00,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:00,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 20:14:00,777 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:00,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash 447987146, now seen corresponding path program 2 times [2024-06-03 20:14:00,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:00,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995857914] [2024-06-03 20:14:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:00,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:01,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995857914] [2024-06-03 20:14:01,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995857914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:01,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:01,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:01,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905787036] [2024-06-03 20:14:01,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:01,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:01,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:01,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:01,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:01,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:01,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:01,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:01,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:01,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:02,285 INFO L124 PetriNetUnfolderBase]: 217/404 cut-off events. [2024-06-03 20:14:02,286 INFO L125 PetriNetUnfolderBase]: For 2986/2986 co-relation queries the response was YES. [2024-06-03 20:14:02,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 404 events. 217/404 cut-off events. For 2986/2986 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1566 event pairs, 35 based on Foata normal form. 14/417 useless extension candidates. Maximal degree in co-relation 1808. Up to 219 conditions per place. [2024-06-03 20:14:02,289 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 51 selfloop transitions, 34 changer transitions 12/99 dead transitions. [2024-06-03 20:14:02,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 99 transitions, 859 flow [2024-06-03 20:14:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:14:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:14:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-03 20:14:02,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-03 20:14:02,291 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 558 flow. Second operand 10 states and 132 transitions. [2024-06-03 20:14:02,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 99 transitions, 859 flow [2024-06-03 20:14:02,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 99 transitions, 806 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-03 20:14:02,299 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 569 flow [2024-06-03 20:14:02,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=569, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2024-06-03 20:14:02,299 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-03 20:14:02,300 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 569 flow [2024-06-03 20:14:02,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:02,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:02,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:02,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 20:14:02,300 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:02,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1840776394, now seen corresponding path program 1 times [2024-06-03 20:14:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:02,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562773154] [2024-06-03 20:14:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562773154] [2024-06-03 20:14:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562773154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:03,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:03,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316023776] [2024-06-03 20:14:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:03,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:03,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 569 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:03,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:03,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:03,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:03,805 INFO L124 PetriNetUnfolderBase]: 204/375 cut-off events. [2024-06-03 20:14:03,806 INFO L125 PetriNetUnfolderBase]: For 2475/2475 co-relation queries the response was YES. [2024-06-03 20:14:03,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 375 events. 204/375 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1410 event pairs, 33 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1781. Up to 236 conditions per place. [2024-06-03 20:14:03,809 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 35 changer transitions 0/93 dead transitions. [2024-06-03 20:14:03,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 887 flow [2024-06-03 20:14:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:14:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:14:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-03 20:14:03,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-03 20:14:03,811 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 569 flow. Second operand 9 states and 116 transitions. [2024-06-03 20:14:03,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 93 transitions, 887 flow [2024-06-03 20:14:03,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 93 transitions, 801 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:14:03,823 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 623 flow [2024-06-03 20:14:03,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=623, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-06-03 20:14:03,824 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-03 20:14:03,824 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 623 flow [2024-06-03 20:14:03,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:03,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:03,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:03,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 20:14:03,826 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:03,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:03,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1837979884, now seen corresponding path program 2 times [2024-06-03 20:14:03,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:03,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558238893] [2024-06-03 20:14:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:03,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:04,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558238893] [2024-06-03 20:14:04,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558238893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:04,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:04,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176555605] [2024-06-03 20:14:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:04,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:04,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:05,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:05,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 623 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:05,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:05,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:05,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:05,263 INFO L124 PetriNetUnfolderBase]: 210/385 cut-off events. [2024-06-03 20:14:05,263 INFO L125 PetriNetUnfolderBase]: For 2907/2907 co-relation queries the response was YES. [2024-06-03 20:14:05,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 385 events. 210/385 cut-off events. For 2907/2907 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1453 event pairs, 33 based on Foata normal form. 2/386 useless extension candidates. Maximal degree in co-relation 1854. Up to 293 conditions per place. [2024-06-03 20:14:05,267 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 25 changer transitions 2/92 dead transitions. [2024-06-03 20:14:05,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 873 flow [2024-06-03 20:14:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:14:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:14:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 20:14:05,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-03 20:14:05,268 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 623 flow. Second operand 9 states and 110 transitions. [2024-06-03 20:14:05,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 873 flow [2024-06-03 20:14:05,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 827 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-03 20:14:05,277 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 658 flow [2024-06-03 20:14:05,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=658, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-06-03 20:14:05,277 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-03 20:14:05,278 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 658 flow [2024-06-03 20:14:05,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:05,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:05,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:05,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 20:14:05,278 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:05,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1722504140, now seen corresponding path program 1 times [2024-06-03 20:14:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:05,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3522881] [2024-06-03 20:14:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:06,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3522881] [2024-06-03 20:14:06,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3522881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:06,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:06,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888340910] [2024-06-03 20:14:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:06,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:06,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:06,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:06,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:06,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:06,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:06,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:06,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:06,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:06,777 INFO L124 PetriNetUnfolderBase]: 214/393 cut-off events. [2024-06-03 20:14:06,778 INFO L125 PetriNetUnfolderBase]: For 3266/3266 co-relation queries the response was YES. [2024-06-03 20:14:06,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 393 events. 214/393 cut-off events. For 3266/3266 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1507 event pairs, 37 based on Foata normal form. 2/394 useless extension candidates. Maximal degree in co-relation 1927. Up to 348 conditions per place. [2024-06-03 20:14:06,781 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 71 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-06-03 20:14:06,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 870 flow [2024-06-03 20:14:06,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:14:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:14:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 20:14:06,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-03 20:14:06,783 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 658 flow. Second operand 8 states and 94 transitions. [2024-06-03 20:14:06,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 870 flow [2024-06-03 20:14:06,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 803 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 20:14:06,792 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 640 flow [2024-06-03 20:14:06,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=640, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2024-06-03 20:14:06,793 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-03 20:14:06,793 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 640 flow [2024-06-03 20:14:06,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:06,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:06,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:06,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 20:14:06,794 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:06,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1722688714, now seen corresponding path program 3 times [2024-06-03 20:14:06,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:06,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431564109] [2024-06-03 20:14:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:06,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:07,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:07,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431564109] [2024-06-03 20:14:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431564109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:07,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:07,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:07,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843560675] [2024-06-03 20:14:07,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:07,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:07,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:07,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:07,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:07,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:07,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 640 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:07,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:07,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:07,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:08,388 INFO L124 PetriNetUnfolderBase]: 220/403 cut-off events. [2024-06-03 20:14:08,388 INFO L125 PetriNetUnfolderBase]: For 3564/3564 co-relation queries the response was YES. [2024-06-03 20:14:08,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 403 events. 220/403 cut-off events. For 3564/3564 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1544 event pairs, 28 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 1962. Up to 320 conditions per place. [2024-06-03 20:14:08,392 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 68 selfloop transitions, 25 changer transitions 0/95 dead transitions. [2024-06-03 20:14:08,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 894 flow [2024-06-03 20:14:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:14:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:14:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 20:14:08,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-03 20:14:08,393 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 640 flow. Second operand 9 states and 111 transitions. [2024-06-03 20:14:08,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 894 flow [2024-06-03 20:14:08,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 864 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 20:14:08,405 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 693 flow [2024-06-03 20:14:08,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=693, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-06-03 20:14:08,406 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-03 20:14:08,406 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 693 flow [2024-06-03 20:14:08,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:08,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:08,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:08,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 20:14:08,407 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:08,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1722688838, now seen corresponding path program 3 times [2024-06-03 20:14:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:08,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707848438] [2024-06-03 20:14:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:08,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:09,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:09,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707848438] [2024-06-03 20:14:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707848438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:09,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657667187] [2024-06-03 20:14:09,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:09,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:09,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:09,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:09,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 693 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:09,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:09,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:09,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:09,737 INFO L124 PetriNetUnfolderBase]: 244/455 cut-off events. [2024-06-03 20:14:09,737 INFO L125 PetriNetUnfolderBase]: For 5752/5752 co-relation queries the response was YES. [2024-06-03 20:14:09,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 455 events. 244/455 cut-off events. For 5752/5752 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1847 event pairs, 41 based on Foata normal form. 14/468 useless extension candidates. Maximal degree in co-relation 2177. Up to 334 conditions per place. [2024-06-03 20:14:09,741 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 69 selfloop transitions, 16 changer transitions 13/100 dead transitions. [2024-06-03 20:14:09,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 970 flow [2024-06-03 20:14:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:14:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:14:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 20:14:09,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185185185185185 [2024-06-03 20:14:09,743 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 693 flow. Second operand 9 states and 113 transitions. [2024-06-03 20:14:09,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 100 transitions, 970 flow [2024-06-03 20:14:09,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 907 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 20:14:09,755 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 635 flow [2024-06-03 20:14:09,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2024-06-03 20:14:09,755 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-03 20:14:09,756 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 635 flow [2024-06-03 20:14:09,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:09,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:09,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:09,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 20:14:09,756 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:09,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash -86855150, now seen corresponding path program 2 times [2024-06-03 20:14:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:09,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941323324] [2024-06-03 20:14:09,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:11,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:11,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941323324] [2024-06-03 20:14:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941323324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:11,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127770581] [2024-06-03 20:14:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:11,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:11,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:11,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 635 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:11,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:11,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:11,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:11,526 INFO L124 PetriNetUnfolderBase]: 215/404 cut-off events. [2024-06-03 20:14:11,527 INFO L125 PetriNetUnfolderBase]: For 4291/4291 co-relation queries the response was YES. [2024-06-03 20:14:11,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 404 events. 215/404 cut-off events. For 4291/4291 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1608 event pairs, 31 based on Foata normal form. 2/405 useless extension candidates. Maximal degree in co-relation 1971. Up to 344 conditions per place. [2024-06-03 20:14:11,530 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 70 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-06-03 20:14:11,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 90 transitions, 873 flow [2024-06-03 20:14:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:14:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:14:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-03 20:14:11,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-03 20:14:11,532 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 635 flow. Second operand 7 states and 86 transitions. [2024-06-03 20:14:11,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 90 transitions, 873 flow [2024-06-03 20:14:11,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 839 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 20:14:11,544 INFO L231 Difference]: Finished difference. Result has 97 places, 77 transitions, 700 flow [2024-06-03 20:14:11,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=700, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2024-06-03 20:14:11,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-03 20:14:11,545 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 700 flow [2024-06-03 20:14:11,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:11,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:11,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:11,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 20:14:11,546 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:11,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:11,546 INFO L85 PathProgramCache]: Analyzing trace with hash -87039724, now seen corresponding path program 4 times [2024-06-03 20:14:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476038592] [2024-06-03 20:14:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:11,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:12,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:12,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476038592] [2024-06-03 20:14:12,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476038592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:12,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:12,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:12,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666841951] [2024-06-03 20:14:12,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:12,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:12,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:12,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:12,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:12,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:12,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:12,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:12,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:12,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:12,985 INFO L124 PetriNetUnfolderBase]: 211/398 cut-off events. [2024-06-03 20:14:12,985 INFO L125 PetriNetUnfolderBase]: For 4375/4375 co-relation queries the response was YES. [2024-06-03 20:14:12,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 398 events. 211/398 cut-off events. For 4375/4375 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1587 event pairs, 29 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 2009. Up to 284 conditions per place. [2024-06-03 20:14:12,989 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 33 changer transitions 1/102 dead transitions. [2024-06-03 20:14:12,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 1024 flow [2024-06-03 20:14:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:14:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:14:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-03 20:14:12,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-03 20:14:12,991 INFO L175 Difference]: Start difference. First operand has 97 places, 77 transitions, 700 flow. Second operand 8 states and 109 transitions. [2024-06-03 20:14:12,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 1024 flow [2024-06-03 20:14:13,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 989 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-03 20:14:13,004 INFO L231 Difference]: Finished difference. Result has 103 places, 79 transitions, 776 flow [2024-06-03 20:14:13,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=776, PETRI_PLACES=103, PETRI_TRANSITIONS=79} [2024-06-03 20:14:13,005 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2024-06-03 20:14:13,005 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 79 transitions, 776 flow [2024-06-03 20:14:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:13,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:13,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:13,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 20:14:13,006 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:13,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1104369654, now seen corresponding path program 4 times [2024-06-03 20:14:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572420096] [2024-06-03 20:14:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:13,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:13,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:13,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:13,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572420096] [2024-06-03 20:14:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572420096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:13,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:13,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:13,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447023363] [2024-06-03 20:14:13,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:13,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:13,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:13,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:13,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 79 transitions, 776 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:13,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:13,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:13,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:14,251 INFO L124 PetriNetUnfolderBase]: 228/437 cut-off events. [2024-06-03 20:14:14,251 INFO L125 PetriNetUnfolderBase]: For 6343/6343 co-relation queries the response was YES. [2024-06-03 20:14:14,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 437 events. 228/437 cut-off events. For 6343/6343 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1808 event pairs, 21 based on Foata normal form. 14/450 useless extension candidates. Maximal degree in co-relation 2172. Up to 289 conditions per place. [2024-06-03 20:14:14,255 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 72 selfloop transitions, 18 changer transitions 14/106 dead transitions. [2024-06-03 20:14:14,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 1082 flow [2024-06-03 20:14:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:14:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:14:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-03 20:14:14,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-03 20:14:14,257 INFO L175 Difference]: Start difference. First operand has 103 places, 79 transitions, 776 flow. Second operand 8 states and 110 transitions. [2024-06-03 20:14:14,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 1082 flow [2024-06-03 20:14:14,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 106 transitions, 995 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 20:14:14,270 INFO L231 Difference]: Finished difference. Result has 105 places, 73 transitions, 677 flow [2024-06-03 20:14:14,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=677, PETRI_PLACES=105, PETRI_TRANSITIONS=73} [2024-06-03 20:14:14,271 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-03 20:14:14,271 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 73 transitions, 677 flow [2024-06-03 20:14:14,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:14,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:14,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:14,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 20:14:14,272 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:14,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash 141046000, now seen corresponding path program 3 times [2024-06-03 20:14:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285615111] [2024-06-03 20:14:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:15,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:15,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285615111] [2024-06-03 20:14:15,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285615111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:15,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:15,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518970153] [2024-06-03 20:14:15,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:15,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:15,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:15,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:15,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:15,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:15,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 73 transitions, 677 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:15,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:15,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:15,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:15,529 INFO L124 PetriNetUnfolderBase]: 190/363 cut-off events. [2024-06-03 20:14:15,529 INFO L125 PetriNetUnfolderBase]: For 4348/4348 co-relation queries the response was YES. [2024-06-03 20:14:15,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1894 conditions, 363 events. 190/363 cut-off events. For 4348/4348 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1404 event pairs, 28 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1840. Up to 289 conditions per place. [2024-06-03 20:14:15,531 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 64 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2024-06-03 20:14:15,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 85 transitions, 877 flow [2024-06-03 20:14:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:14:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:14:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-03 20:14:15,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-03 20:14:15,533 INFO L175 Difference]: Start difference. First operand has 105 places, 73 transitions, 677 flow. Second operand 6 states and 77 transitions. [2024-06-03 20:14:15,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 85 transitions, 877 flow [2024-06-03 20:14:15,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 85 transitions, 788 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 20:14:15,545 INFO L231 Difference]: Finished difference. Result has 99 places, 74 transitions, 643 flow [2024-06-03 20:14:15,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2024-06-03 20:14:15,546 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-03 20:14:15,546 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 643 flow [2024-06-03 20:14:15,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:15,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:15,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:15,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 20:14:15,547 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:15,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 141039056, now seen corresponding path program 5 times [2024-06-03 20:14:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:15,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679199178] [2024-06-03 20:14:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:15,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:16,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:16,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679199178] [2024-06-03 20:14:16,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679199178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:16,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:16,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:16,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622546447] [2024-06-03 20:14:16,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:16,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:16,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:16,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:16,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 643 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:16,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:16,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:16,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:16,891 INFO L124 PetriNetUnfolderBase]: 186/357 cut-off events. [2024-06-03 20:14:16,891 INFO L125 PetriNetUnfolderBase]: For 3878/3878 co-relation queries the response was YES. [2024-06-03 20:14:16,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1773 conditions, 357 events. 186/357 cut-off events. For 3878/3878 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1376 event pairs, 30 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 1721. Up to 276 conditions per place. [2024-06-03 20:14:16,895 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 65 selfloop transitions, 26 changer transitions 0/93 dead transitions. [2024-06-03 20:14:16,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 877 flow [2024-06-03 20:14:16,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:14:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:14:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-03 20:14:16,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-03 20:14:16,896 INFO L175 Difference]: Start difference. First operand has 99 places, 74 transitions, 643 flow. Second operand 7 states and 97 transitions. [2024-06-03 20:14:16,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 877 flow [2024-06-03 20:14:16,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 93 transitions, 834 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-03 20:14:16,909 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 663 flow [2024-06-03 20:14:16,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=663, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2024-06-03 20:14:16,910 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-03 20:14:16,910 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 663 flow [2024-06-03 20:14:16,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:16,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:16,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:16,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 20:14:16,911 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:16,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash 149616880, now seen corresponding path program 4 times [2024-06-03 20:14:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:16,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917511094] [2024-06-03 20:14:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:16,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:17,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:17,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917511094] [2024-06-03 20:14:17,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917511094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:17,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:17,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:14:17,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072759611] [2024-06-03 20:14:17,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:17,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:14:17,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:17,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:14:17,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:14:17,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:17,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 663 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:17,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:17,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:17,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:17,878 INFO L124 PetriNetUnfolderBase]: 183/352 cut-off events. [2024-06-03 20:14:17,878 INFO L125 PetriNetUnfolderBase]: For 3509/3509 co-relation queries the response was YES. [2024-06-03 20:14:17,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 352 events. 183/352 cut-off events. For 3509/3509 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1367 event pairs, 27 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 1694. Up to 320 conditions per place. [2024-06-03 20:14:17,881 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 71 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2024-06-03 20:14:17,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 82 transitions, 841 flow [2024-06-03 20:14:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:14:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:14:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-03 20:14:17,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 20:14:17,882 INFO L175 Difference]: Start difference. First operand has 102 places, 74 transitions, 663 flow. Second operand 6 states and 70 transitions. [2024-06-03 20:14:17,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 82 transitions, 841 flow [2024-06-03 20:14:17,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 82 transitions, 776 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 20:14:17,889 INFO L231 Difference]: Finished difference. Result has 100 places, 74 transitions, 620 flow [2024-06-03 20:14:17,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=620, PETRI_PLACES=100, PETRI_TRANSITIONS=74} [2024-06-03 20:14:17,890 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-03 20:14:17,890 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 74 transitions, 620 flow [2024-06-03 20:14:17,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:17,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:17,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:17,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 20:14:17,891 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:17,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:17,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1231369968, now seen corresponding path program 1 times [2024-06-03 20:14:17,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:17,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009550696] [2024-06-03 20:14:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:17,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009550696] [2024-06-03 20:14:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009550696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:18,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:18,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:18,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583717536] [2024-06-03 20:14:18,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:18,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:18,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:18,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:18,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:18,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:18,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 74 transitions, 620 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:18,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:18,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:18,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:19,132 INFO L124 PetriNetUnfolderBase]: 210/413 cut-off events. [2024-06-03 20:14:19,133 INFO L125 PetriNetUnfolderBase]: For 5918/5918 co-relation queries the response was YES. [2024-06-03 20:14:19,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 413 events. 210/413 cut-off events. For 5918/5918 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1669 event pairs, 42 based on Foata normal form. 8/420 useless extension candidates. Maximal degree in co-relation 1934. Up to 139 conditions per place. [2024-06-03 20:14:19,136 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 54 selfloop transitions, 36 changer transitions 13/105 dead transitions. [2024-06-03 20:14:19,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 105 transitions, 966 flow [2024-06-03 20:14:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:14:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:14:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-03 20:14:19,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-03 20:14:19,138 INFO L175 Difference]: Start difference. First operand has 100 places, 74 transitions, 620 flow. Second operand 10 states and 128 transitions. [2024-06-03 20:14:19,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 105 transitions, 966 flow [2024-06-03 20:14:19,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 932 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 20:14:19,150 INFO L231 Difference]: Finished difference. Result has 105 places, 71 transitions, 636 flow [2024-06-03 20:14:19,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=636, PETRI_PLACES=105, PETRI_TRANSITIONS=71} [2024-06-03 20:14:19,151 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-03 20:14:19,151 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 71 transitions, 636 flow [2024-06-03 20:14:19,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:19,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:19,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 20:14:19,152 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:19,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1002700830, now seen corresponding path program 2 times [2024-06-03 20:14:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:19,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783341051] [2024-06-03 20:14:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:20,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:20,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783341051] [2024-06-03 20:14:20,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783341051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:20,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:20,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:20,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752397978] [2024-06-03 20:14:20,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:20,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:20,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:20,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:20,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:20,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:20,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 71 transitions, 636 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:20,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:20,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:20,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:20,603 INFO L124 PetriNetUnfolderBase]: 223/442 cut-off events. [2024-06-03 20:14:20,603 INFO L125 PetriNetUnfolderBase]: For 8760/8760 co-relation queries the response was YES. [2024-06-03 20:14:20,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 442 events. 223/442 cut-off events. For 8760/8760 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1881 event pairs, 53 based on Foata normal form. 8/449 useless extension candidates. Maximal degree in co-relation 2292. Up to 229 conditions per place. [2024-06-03 20:14:20,607 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 65 selfloop transitions, 26 changer transitions 8/101 dead transitions. [2024-06-03 20:14:20,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 101 transitions, 988 flow [2024-06-03 20:14:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:14:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:14:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 20:14:20,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-03 20:14:20,609 INFO L175 Difference]: Start difference. First operand has 105 places, 71 transitions, 636 flow. Second operand 11 states and 133 transitions. [2024-06-03 20:14:20,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 101 transitions, 988 flow [2024-06-03 20:14:20,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 922 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 20:14:20,622 INFO L231 Difference]: Finished difference. Result has 104 places, 68 transitions, 606 flow [2024-06-03 20:14:20,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=606, PETRI_PLACES=104, PETRI_TRANSITIONS=68} [2024-06-03 20:14:20,625 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-03 20:14:20,625 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 68 transitions, 606 flow [2024-06-03 20:14:20,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:20,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:20,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:20,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 20:14:20,626 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:20,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1146375408, now seen corresponding path program 3 times [2024-06-03 20:14:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:20,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122099376] [2024-06-03 20:14:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:20,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:21,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:21,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122099376] [2024-06-03 20:14:21,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122099376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:21,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:21,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:21,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879195712] [2024-06-03 20:14:21,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:21,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:21,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:21,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:21,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:21,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 68 transitions, 606 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:21,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:21,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:21,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:21,856 INFO L124 PetriNetUnfolderBase]: 219/438 cut-off events. [2024-06-03 20:14:21,856 INFO L125 PetriNetUnfolderBase]: For 8433/8433 co-relation queries the response was YES. [2024-06-03 20:14:21,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 438 events. 219/438 cut-off events. For 8433/8433 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1884 event pairs, 59 based on Foata normal form. 10/447 useless extension candidates. Maximal degree in co-relation 2260. Up to 261 conditions per place. [2024-06-03 20:14:21,865 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 31 changer transitions 17/93 dead transitions. [2024-06-03 20:14:21,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 93 transitions, 876 flow [2024-06-03 20:14:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:14:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:14:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 20:14:21,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-03 20:14:21,866 INFO L175 Difference]: Start difference. First operand has 104 places, 68 transitions, 606 flow. Second operand 10 states and 123 transitions. [2024-06-03 20:14:21,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 93 transitions, 876 flow [2024-06-03 20:14:21,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 93 transitions, 824 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:14:21,879 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 573 flow [2024-06-03 20:14:21,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=573, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2024-06-03 20:14:21,880 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-03 20:14:21,880 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 573 flow [2024-06-03 20:14:21,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:21,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:21,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:21,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 20:14:21,880 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:21,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1089396360, now seen corresponding path program 4 times [2024-06-03 20:14:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:21,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138598642] [2024-06-03 20:14:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:21,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:22,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:22,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138598642] [2024-06-03 20:14:22,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138598642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:22,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:22,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:22,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416852062] [2024-06-03 20:14:22,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:22,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:22,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:22,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:22,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 573 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:22,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:22,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:22,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:23,161 INFO L124 PetriNetUnfolderBase]: 177/355 cut-off events. [2024-06-03 20:14:23,162 INFO L125 PetriNetUnfolderBase]: For 5817/5817 co-relation queries the response was YES. [2024-06-03 20:14:23,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 355 events. 177/355 cut-off events. For 5817/5817 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1417 event pairs, 46 based on Foata normal form. 10/364 useless extension candidates. Maximal degree in co-relation 1755. Up to 222 conditions per place. [2024-06-03 20:14:23,167 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 44 selfloop transitions, 19 changer transitions 19/84 dead transitions. [2024-06-03 20:14:23,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 84 transitions, 813 flow [2024-06-03 20:14:23,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:14:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:14:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 20:14:23,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-03 20:14:23,169 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 573 flow. Second operand 10 states and 116 transitions. [2024-06-03 20:14:23,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 84 transitions, 813 flow [2024-06-03 20:14:23,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 84 transitions, 743 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 20:14:23,180 INFO L231 Difference]: Finished difference. Result has 98 places, 57 transitions, 491 flow [2024-06-03 20:14:23,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=491, PETRI_PLACES=98, PETRI_TRANSITIONS=57} [2024-06-03 20:14:23,180 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-03 20:14:23,181 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 57 transitions, 491 flow [2024-06-03 20:14:23,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:23,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:23,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:23,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 20:14:23,182 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:23,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1871676156, now seen corresponding path program 5 times [2024-06-03 20:14:23,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:23,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078378222] [2024-06-03 20:14:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:23,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:24,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078378222] [2024-06-03 20:14:24,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078378222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:24,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:24,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:24,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010164924] [2024-06-03 20:14:24,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:24,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:24,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:24,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:24,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:24,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:24,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 57 transitions, 491 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:24,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:24,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:24,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:24,535 INFO L124 PetriNetUnfolderBase]: 188/379 cut-off events. [2024-06-03 20:14:24,535 INFO L125 PetriNetUnfolderBase]: For 6596/6596 co-relation queries the response was YES. [2024-06-03 20:14:24,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 379 events. 188/379 cut-off events. For 6596/6596 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1581 event pairs, 49 based on Foata normal form. 8/386 useless extension candidates. Maximal degree in co-relation 1899. Up to 210 conditions per place. [2024-06-03 20:14:24,538 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 19 changer transitions 7/80 dead transitions. [2024-06-03 20:14:24,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 80 transitions, 777 flow [2024-06-03 20:14:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:14:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:14:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 20:14:24,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-03 20:14:24,539 INFO L175 Difference]: Start difference. First operand has 98 places, 57 transitions, 491 flow. Second operand 10 states and 119 transitions. [2024-06-03 20:14:24,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 80 transitions, 777 flow [2024-06-03 20:14:24,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 721 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-03 20:14:24,549 INFO L231 Difference]: Finished difference. Result has 89 places, 55 transitions, 470 flow [2024-06-03 20:14:24,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=470, PETRI_PLACES=89, PETRI_TRANSITIONS=55} [2024-06-03 20:14:24,549 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-03 20:14:24,549 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 55 transitions, 470 flow [2024-06-03 20:14:24,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:24,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:24,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:24,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 20:14:24,550 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:24,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:24,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1863741514, now seen corresponding path program 6 times [2024-06-03 20:14:24,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:24,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789494699] [2024-06-03 20:14:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:24,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:25,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:25,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789494699] [2024-06-03 20:14:25,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789494699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:25,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:25,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:25,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856968257] [2024-06-03 20:14:25,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:25,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:25,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:25,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:25,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:25,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:25,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 55 transitions, 470 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:25,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:25,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:25,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:25,898 INFO L124 PetriNetUnfolderBase]: 157/318 cut-off events. [2024-06-03 20:14:25,898 INFO L125 PetriNetUnfolderBase]: For 3916/3916 co-relation queries the response was YES. [2024-06-03 20:14:25,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 318 events. 157/318 cut-off events. For 3916/3916 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1228 event pairs, 46 based on Foata normal form. 10/327 useless extension candidates. Maximal degree in co-relation 1471. Up to 210 conditions per place. [2024-06-03 20:14:25,899 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 41 selfloop transitions, 15 changer transitions 15/73 dead transitions. [2024-06-03 20:14:25,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 73 transitions, 680 flow [2024-06-03 20:14:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:14:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:14:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 20:14:25,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-03 20:14:25,901 INFO L175 Difference]: Start difference. First operand has 89 places, 55 transitions, 470 flow. Second operand 10 states and 113 transitions. [2024-06-03 20:14:25,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 73 transitions, 680 flow [2024-06-03 20:14:25,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 73 transitions, 640 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:14:25,907 INFO L231 Difference]: Finished difference. Result has 88 places, 50 transitions, 425 flow [2024-06-03 20:14:25,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=425, PETRI_PLACES=88, PETRI_TRANSITIONS=50} [2024-06-03 20:14:25,908 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-03 20:14:25,908 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 50 transitions, 425 flow [2024-06-03 20:14:25,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:25,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:25,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 20:14:25,908 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:25,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:25,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1858019782, now seen corresponding path program 1 times [2024-06-03 20:14:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:25,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411331048] [2024-06-03 20:14:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:26,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:26,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411331048] [2024-06-03 20:14:26,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411331048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:26,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:26,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:26,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322949791] [2024-06-03 20:14:26,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:26,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:26,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:27,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:27,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 50 transitions, 425 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:27,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:27,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:27,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:27,320 INFO L124 PetriNetUnfolderBase]: 135/272 cut-off events. [2024-06-03 20:14:27,320 INFO L125 PetriNetUnfolderBase]: For 2630/2630 co-relation queries the response was YES. [2024-06-03 20:14:27,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 272 events. 135/272 cut-off events. For 2630/2630 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 971 event pairs, 29 based on Foata normal form. 2/273 useless extension candidates. Maximal degree in co-relation 1271. Up to 210 conditions per place. [2024-06-03 20:14:27,321 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 47 selfloop transitions, 15 changer transitions 0/64 dead transitions. [2024-06-03 20:14:27,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 64 transitions, 587 flow [2024-06-03 20:14:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:14:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:14:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 20:14:27,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-03 20:14:27,323 INFO L175 Difference]: Start difference. First operand has 88 places, 50 transitions, 425 flow. Second operand 9 states and 98 transitions. [2024-06-03 20:14:27,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 64 transitions, 587 flow [2024-06-03 20:14:27,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 549 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 20:14:27,327 INFO L231 Difference]: Finished difference. Result has 80 places, 51 transitions, 429 flow [2024-06-03 20:14:27,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=429, PETRI_PLACES=80, PETRI_TRANSITIONS=51} [2024-06-03 20:14:27,327 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-03 20:14:27,327 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 51 transitions, 429 flow [2024-06-03 20:14:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:27,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:27,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:27,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 20:14:27,327 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:27,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash 77452270, now seen corresponding path program 2 times [2024-06-03 20:14:27,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:27,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150111996] [2024-06-03 20:14:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:27,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:28,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:28,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150111996] [2024-06-03 20:14:28,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150111996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:28,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:28,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535276772] [2024-06-03 20:14:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:28,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:28,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:28,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:28,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 51 transitions, 429 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:28,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:28,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:28,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:28,662 INFO L124 PetriNetUnfolderBase]: 139/280 cut-off events. [2024-06-03 20:14:28,662 INFO L125 PetriNetUnfolderBase]: For 1922/1922 co-relation queries the response was YES. [2024-06-03 20:14:28,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 280 events. 139/280 cut-off events. For 1922/1922 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1009 event pairs, 42 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 1259. Up to 216 conditions per place. [2024-06-03 20:14:28,663 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-06-03 20:14:28,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 62 transitions, 583 flow [2024-06-03 20:14:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:14:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:14:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-03 20:14:28,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-03 20:14:28,665 INFO L175 Difference]: Start difference. First operand has 80 places, 51 transitions, 429 flow. Second operand 7 states and 83 transitions. [2024-06-03 20:14:28,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 62 transitions, 583 flow [2024-06-03 20:14:28,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 62 transitions, 559 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 20:14:28,668 INFO L231 Difference]: Finished difference. Result has 81 places, 52 transitions, 455 flow [2024-06-03 20:14:28,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=81, PETRI_TRANSITIONS=52} [2024-06-03 20:14:28,668 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-03 20:14:28,669 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 52 transitions, 455 flow [2024-06-03 20:14:28,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:28,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:28,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:28,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 20:14:28,669 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:28,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1596736920, now seen corresponding path program 7 times [2024-06-03 20:14:28,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:28,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295382210] [2024-06-03 20:14:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:28,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:29,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:29,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295382210] [2024-06-03 20:14:29,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295382210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:29,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:29,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:29,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373313329] [2024-06-03 20:14:29,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:29,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:29,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:29,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:29,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:29,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:29,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 52 transitions, 455 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:29,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:29,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:29,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:29,872 INFO L124 PetriNetUnfolderBase]: 155/316 cut-off events. [2024-06-03 20:14:29,872 INFO L125 PetriNetUnfolderBase]: For 2870/2870 co-relation queries the response was YES. [2024-06-03 20:14:29,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 316 events. 155/316 cut-off events. For 2870/2870 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1223 event pairs, 46 based on Foata normal form. 10/325 useless extension candidates. Maximal degree in co-relation 1418. Up to 199 conditions per place. [2024-06-03 20:14:29,873 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 37 selfloop transitions, 20 changer transitions 11/70 dead transitions. [2024-06-03 20:14:29,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 70 transitions, 661 flow [2024-06-03 20:14:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:14:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:14:29,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 20:14:29,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-03 20:14:29,875 INFO L175 Difference]: Start difference. First operand has 81 places, 52 transitions, 455 flow. Second operand 9 states and 107 transitions. [2024-06-03 20:14:29,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 70 transitions, 661 flow [2024-06-03 20:14:29,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 70 transitions, 621 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 20:14:29,880 INFO L231 Difference]: Finished difference. Result has 85 places, 49 transitions, 436 flow [2024-06-03 20:14:29,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=436, PETRI_PLACES=85, PETRI_TRANSITIONS=49} [2024-06-03 20:14:29,881 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-03 20:14:29,881 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 49 transitions, 436 flow [2024-06-03 20:14:29,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:29,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:29,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:29,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 20:14:29,881 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:29,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:29,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1596733200, now seen corresponding path program 8 times [2024-06-03 20:14:29,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:29,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105309975] [2024-06-03 20:14:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:30,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:30,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105309975] [2024-06-03 20:14:30,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105309975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:30,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:30,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244990242] [2024-06-03 20:14:30,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:30,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:30,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:30,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 49 transitions, 436 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:30,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:30,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:30,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:31,125 INFO L124 PetriNetUnfolderBase]: 143/296 cut-off events. [2024-06-03 20:14:31,125 INFO L125 PetriNetUnfolderBase]: For 2939/2939 co-relation queries the response was YES. [2024-06-03 20:14:31,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 296 events. 143/296 cut-off events. For 2939/2939 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1111 event pairs, 36 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1346. Up to 124 conditions per place. [2024-06-03 20:14:31,126 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 42 selfloop transitions, 17 changer transitions 9/70 dead transitions. [2024-06-03 20:14:31,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 70 transitions, 674 flow [2024-06-03 20:14:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:14:31,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:14:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 20:14:31,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-03 20:14:31,127 INFO L175 Difference]: Start difference. First operand has 85 places, 49 transitions, 436 flow. Second operand 9 states and 109 transitions. [2024-06-03 20:14:31,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 70 transitions, 674 flow [2024-06-03 20:14:31,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 70 transitions, 609 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 20:14:31,132 INFO L231 Difference]: Finished difference. Result has 82 places, 45 transitions, 377 flow [2024-06-03 20:14:31,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=377, PETRI_PLACES=82, PETRI_TRANSITIONS=45} [2024-06-03 20:14:31,132 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-03 20:14:31,132 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 45 transitions, 377 flow [2024-06-03 20:14:31,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:31,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:31,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 20:14:31,133 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:31,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:31,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1602458652, now seen corresponding path program 3 times [2024-06-03 20:14:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:31,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758115709] [2024-06-03 20:14:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:31,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:32,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:32,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758115709] [2024-06-03 20:14:32,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758115709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:32,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:32,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:32,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440922824] [2024-06-03 20:14:32,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:32,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:32,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:32,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:32,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 45 transitions, 377 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:32,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:32,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:32,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:32,406 INFO L124 PetriNetUnfolderBase]: 135/280 cut-off events. [2024-06-03 20:14:32,406 INFO L125 PetriNetUnfolderBase]: For 2480/2480 co-relation queries the response was YES. [2024-06-03 20:14:32,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 280 events. 135/280 cut-off events. For 2480/2480 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1042 event pairs, 44 based on Foata normal form. 8/287 useless extension candidates. Maximal degree in co-relation 1220. Up to 212 conditions per place. [2024-06-03 20:14:32,407 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 5 changer transitions 13/59 dead transitions. [2024-06-03 20:14:32,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 59 transitions, 537 flow [2024-06-03 20:14:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:14:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:14:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 20:14:32,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-03 20:14:32,409 INFO L175 Difference]: Start difference. First operand has 82 places, 45 transitions, 377 flow. Second operand 8 states and 88 transitions. [2024-06-03 20:14:32,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 59 transitions, 537 flow [2024-06-03 20:14:32,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 59 transitions, 489 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 20:14:32,412 INFO L231 Difference]: Finished difference. Result has 77 places, 41 transitions, 297 flow [2024-06-03 20:14:32,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=297, PETRI_PLACES=77, PETRI_TRANSITIONS=41} [2024-06-03 20:14:32,413 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-03 20:14:32,413 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 41 transitions, 297 flow [2024-06-03 20:14:32,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:32,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:32,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:32,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 20:14:32,414 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:32,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:32,414 INFO L85 PathProgramCache]: Analyzing trace with hash 77459710, now seen corresponding path program 4 times [2024-06-03 20:14:32,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:32,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884317560] [2024-06-03 20:14:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:32,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884317560] [2024-06-03 20:14:33,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884317560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:33,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448547564] [2024-06-03 20:14:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:33,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:33,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:33,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:33,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 41 transitions, 297 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:33,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:33,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:33,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:33,716 INFO L124 PetriNetUnfolderBase]: 118/241 cut-off events. [2024-06-03 20:14:33,716 INFO L125 PetriNetUnfolderBase]: For 1675/1675 co-relation queries the response was YES. [2024-06-03 20:14:33,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 241 events. 118/241 cut-off events. For 1675/1675 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 825 event pairs, 36 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 1026. Up to 173 conditions per place. [2024-06-03 20:14:33,717 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 36 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2024-06-03 20:14:33,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 52 transitions, 431 flow [2024-06-03 20:14:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:14:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:14:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-03 20:14:33,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-03 20:14:33,719 INFO L175 Difference]: Start difference. First operand has 77 places, 41 transitions, 297 flow. Second operand 7 states and 83 transitions. [2024-06-03 20:14:33,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 52 transitions, 431 flow [2024-06-03 20:14:33,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 52 transitions, 395 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:14:33,723 INFO L231 Difference]: Finished difference. Result has 69 places, 42 transitions, 305 flow [2024-06-03 20:14:33,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=69, PETRI_TRANSITIONS=42} [2024-06-03 20:14:33,724 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-03 20:14:33,724 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 42 transitions, 305 flow [2024-06-03 20:14:33,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:33,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:33,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 20:14:33,724 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:33,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:33,725 INFO L85 PathProgramCache]: Analyzing trace with hash 343156990, now seen corresponding path program 5 times [2024-06-03 20:14:33,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:33,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89743957] [2024-06-03 20:14:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:34,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:34,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89743957] [2024-06-03 20:14:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89743957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:34,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:34,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574853098] [2024-06-03 20:14:34,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:34,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:34,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:34,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:34,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:34,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:34,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 42 transitions, 305 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:34,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:34,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:34,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:34,757 INFO L124 PetriNetUnfolderBase]: 115/236 cut-off events. [2024-06-03 20:14:34,757 INFO L125 PetriNetUnfolderBase]: For 1544/1544 co-relation queries the response was YES. [2024-06-03 20:14:34,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 236 events. 115/236 cut-off events. For 1544/1544 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 802 event pairs, 43 based on Foata normal form. 2/237 useless extension candidates. Maximal degree in co-relation 968. Up to 196 conditions per place. [2024-06-03 20:14:34,758 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 41 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2024-06-03 20:14:34,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 52 transitions, 427 flow [2024-06-03 20:14:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:14:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:14:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 20:14:34,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-03 20:14:34,759 INFO L175 Difference]: Start difference. First operand has 69 places, 42 transitions, 305 flow. Second operand 7 states and 79 transitions. [2024-06-03 20:14:34,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 52 transitions, 427 flow [2024-06-03 20:14:34,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 52 transitions, 391 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 20:14:34,762 INFO L231 Difference]: Finished difference. Result has 70 places, 42 transitions, 291 flow [2024-06-03 20:14:34,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=70, PETRI_TRANSITIONS=42} [2024-06-03 20:14:34,762 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-03 20:14:34,763 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 42 transitions, 291 flow [2024-06-03 20:14:34,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:34,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:34,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:34,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 20:14:34,763 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:34,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash 323729946, now seen corresponding path program 9 times [2024-06-03 20:14:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852354882] [2024-06-03 20:14:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:34,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:35,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:35,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852354882] [2024-06-03 20:14:35,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852354882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:35,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:35,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:35,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780264551] [2024-06-03 20:14:35,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:35,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:35,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:35,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:35,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 42 transitions, 291 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:35,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:35,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:35,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:36,171 INFO L124 PetriNetUnfolderBase]: 102/213 cut-off events. [2024-06-03 20:14:36,172 INFO L125 PetriNetUnfolderBase]: For 1533/1533 co-relation queries the response was YES. [2024-06-03 20:14:36,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 213 events. 102/213 cut-off events. For 1533/1533 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 699 event pairs, 28 based on Foata normal form. 10/222 useless extension candidates. Maximal degree in co-relation 774. Up to 117 conditions per place. [2024-06-03 20:14:36,173 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 32 selfloop transitions, 12 changer transitions 11/57 dead transitions. [2024-06-03 20:14:36,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 57 transitions, 445 flow [2024-06-03 20:14:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:14:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:14:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-03 20:14:36,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 20:14:36,174 INFO L175 Difference]: Start difference. First operand has 70 places, 42 transitions, 291 flow. Second operand 8 states and 95 transitions. [2024-06-03 20:14:36,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 57 transitions, 445 flow [2024-06-03 20:14:36,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 57 transitions, 411 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 20:14:36,177 INFO L231 Difference]: Finished difference. Result has 72 places, 38 transitions, 251 flow [2024-06-03 20:14:36,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=251, PETRI_PLACES=72, PETRI_TRANSITIONS=38} [2024-06-03 20:14:36,178 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-03 20:14:36,178 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 38 transitions, 251 flow [2024-06-03 20:14:36,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:36,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:36,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:36,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 20:14:36,179 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:36,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1764037357, now seen corresponding path program 1 times [2024-06-03 20:14:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:36,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080612397] [2024-06-03 20:14:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:37,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:37,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080612397] [2024-06-03 20:14:37,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080612397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:37,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:37,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:14:37,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673111299] [2024-06-03 20:14:37,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:37,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:14:37,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:37,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:14:37,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:14:37,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:37,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 38 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:37,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:37,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:37,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:37,789 INFO L124 PetriNetUnfolderBase]: 84/183 cut-off events. [2024-06-03 20:14:37,790 INFO L125 PetriNetUnfolderBase]: For 1343/1343 co-relation queries the response was YES. [2024-06-03 20:14:37,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 183 events. 84/183 cut-off events. For 1343/1343 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 565 event pairs, 20 based on Foata normal form. 6/188 useless extension candidates. Maximal degree in co-relation 634. Up to 115 conditions per place. [2024-06-03 20:14:37,790 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 28 selfloop transitions, 3 changer transitions 21/54 dead transitions. [2024-06-03 20:14:37,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 54 transitions, 395 flow [2024-06-03 20:14:37,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:14:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:14:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 20:14:37,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-03 20:14:37,791 INFO L175 Difference]: Start difference. First operand has 72 places, 38 transitions, 251 flow. Second operand 10 states and 102 transitions. [2024-06-03 20:14:37,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 54 transitions, 395 flow [2024-06-03 20:14:37,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 54 transitions, 363 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 20:14:37,794 INFO L231 Difference]: Finished difference. Result has 69 places, 32 transitions, 187 flow [2024-06-03 20:14:37,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=187, PETRI_PLACES=69, PETRI_TRANSITIONS=32} [2024-06-03 20:14:37,794 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-03 20:14:37,794 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 32 transitions, 187 flow [2024-06-03 20:14:37,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:37,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:37,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:37,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 20:14:37,795 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:37,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1674011073, now seen corresponding path program 2 times [2024-06-03 20:14:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:37,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442004263] [2024-06-03 20:14:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:37,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:38,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:38,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442004263] [2024-06-03 20:14:38,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442004263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:38,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:38,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:38,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502889741] [2024-06-03 20:14:38,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:38,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:38,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:38,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:38,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:38,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:38,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 32 transitions, 187 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:38,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:38,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:38,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:39,046 INFO L124 PetriNetUnfolderBase]: 67/147 cut-off events. [2024-06-03 20:14:39,046 INFO L125 PetriNetUnfolderBase]: For 960/960 co-relation queries the response was YES. [2024-06-03 20:14:39,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 147 events. 67/147 cut-off events. For 960/960 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 410 event pairs, 20 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 470. Up to 64 conditions per place. [2024-06-03 20:14:39,047 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 23 selfloop transitions, 7 changer transitions 10/42 dead transitions. [2024-06-03 20:14:39,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 42 transitions, 289 flow [2024-06-03 20:14:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:14:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:14:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-03 20:14:39,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 20:14:39,048 INFO L175 Difference]: Start difference. First operand has 69 places, 32 transitions, 187 flow. Second operand 8 states and 85 transitions. [2024-06-03 20:14:39,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 42 transitions, 289 flow [2024-06-03 20:14:39,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 256 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-03 20:14:39,049 INFO L231 Difference]: Finished difference. Result has 56 places, 28 transitions, 147 flow [2024-06-03 20:14:39,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=147, PETRI_PLACES=56, PETRI_TRANSITIONS=28} [2024-06-03 20:14:39,050 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-03 20:14:39,050 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 28 transitions, 147 flow [2024-06-03 20:14:39,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:39,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:39,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:39,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 20:14:39,051 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:39,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:39,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1682054643, now seen corresponding path program 3 times [2024-06-03 20:14:39,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:39,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541127461] [2024-06-03 20:14:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:40,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541127461] [2024-06-03 20:14:40,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541127461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:40,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:40,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:40,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644307781] [2024-06-03 20:14:40,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:40,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:40,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:40,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 28 transitions, 147 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:40,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:40,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:40,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:40,363 INFO L124 PetriNetUnfolderBase]: 55/127 cut-off events. [2024-06-03 20:14:40,363 INFO L125 PetriNetUnfolderBase]: For 786/786 co-relation queries the response was YES. [2024-06-03 20:14:40,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 127 events. 55/127 cut-off events. For 786/786 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 16 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 392. Up to 63 conditions per place. [2024-06-03 20:14:40,364 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 19 selfloop transitions, 4 changer transitions 14/39 dead transitions. [2024-06-03 20:14:40,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 39 transitions, 245 flow [2024-06-03 20:14:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:14:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:14:40,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-03 20:14:40,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 20:14:40,365 INFO L175 Difference]: Start difference. First operand has 56 places, 28 transitions, 147 flow. Second operand 8 states and 84 transitions. [2024-06-03 20:14:40,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 39 transitions, 245 flow [2024-06-03 20:14:40,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 39 transitions, 225 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 20:14:40,367 INFO L231 Difference]: Finished difference. Result has 52 places, 24 transitions, 119 flow [2024-06-03 20:14:40,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=119, PETRI_PLACES=52, PETRI_TRANSITIONS=24} [2024-06-03 20:14:40,367 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-03 20:14:40,367 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 24 transitions, 119 flow [2024-06-03 20:14:40,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:40,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:14:40,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:40,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 20:14:40,368 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:14:40,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:14:40,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1762602625, now seen corresponding path program 4 times [2024-06-03 20:14:40,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:14:40,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545251583] [2024-06-03 20:14:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:14:40,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:14:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:14:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:14:41,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:14:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545251583] [2024-06-03 20:14:41,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545251583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:14:41,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:14:41,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:14:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098702952] [2024-06-03 20:14:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:14:41,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:14:41,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:14:41,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:14:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:14:41,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-03 20:14:41,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 24 transitions, 119 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:41,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:14:41,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-03 20:14:41,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:14:41,487 INFO L124 PetriNetUnfolderBase]: 26/68 cut-off events. [2024-06-03 20:14:41,487 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-06-03 20:14:41,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 68 events. 26/68 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 3 based on Foata normal form. 6/73 useless extension candidates. Maximal degree in co-relation 192. Up to 24 conditions per place. [2024-06-03 20:14:41,487 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-03 20:14:41,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 29 transitions, 167 flow [2024-06-03 20:14:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:14:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:14:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 74 transitions. [2024-06-03 20:14:41,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30833333333333335 [2024-06-03 20:14:41,488 INFO L175 Difference]: Start difference. First operand has 52 places, 24 transitions, 119 flow. Second operand 8 states and 74 transitions. [2024-06-03 20:14:41,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 29 transitions, 167 flow [2024-06-03 20:14:41,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 142 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:14:41,489 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-06-03 20:14:41,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-06-03 20:14:41,490 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-03 20:14:41,490 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-06-03 20:14:41,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:14:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 20:14:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 20:14:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 20:14:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 20:14:41,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 20:14:41,494 INFO L445 BasicCegarLoop]: Path program histogram: [9, 5, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:14:41,496 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:14:41,496 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:14:41,499 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 20:14:41,499 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 20:14:41,500 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:14:41 BasicIcfg [2024-06-03 20:14:41,500 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:14:41,501 INFO L158 Benchmark]: Toolchain (without parser) took 59404.86ms. Allocated memory was 176.2MB in the beginning and 578.8MB in the end (delta: 402.7MB). Free memory was 113.2MB in the beginning and 237.5MB in the end (delta: -124.3MB). Peak memory consumption was 281.0MB. Max. memory is 16.1GB. [2024-06-03 20:14:41,501 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 176.2MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:14:41,501 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 118.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:14:41,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.86ms. Allocated memory is still 176.2MB. Free memory was 112.8MB in the beginning and 80.4MB in the end (delta: 32.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-03 20:14:41,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.90ms. Allocated memory is still 176.2MB. Free memory was 80.4MB in the beginning and 77.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:14:41,502 INFO L158 Benchmark]: Boogie Preprocessor took 92.28ms. Allocated memory is still 176.2MB. Free memory was 77.8MB in the beginning and 74.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 20:14:41,502 INFO L158 Benchmark]: RCFGBuilder took 702.01ms. Allocated memory is still 176.2MB. Free memory was 74.6MB in the beginning and 117.8MB in the end (delta: -43.2MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2024-06-03 20:14:41,502 INFO L158 Benchmark]: TraceAbstraction took 57889.86ms. Allocated memory was 176.2MB in the beginning and 578.8MB in the end (delta: 402.7MB). Free memory was 116.8MB in the beginning and 237.5MB in the end (delta: -120.7MB). Peak memory consumption was 282.8MB. Max. memory is 16.1GB. [2024-06-03 20:14:41,504 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 176.2MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 118.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 625.86ms. Allocated memory is still 176.2MB. Free memory was 112.8MB in the beginning and 80.4MB in the end (delta: 32.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.90ms. Allocated memory is still 176.2MB. Free memory was 80.4MB in the beginning and 77.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.28ms. Allocated memory is still 176.2MB. Free memory was 77.8MB in the beginning and 74.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 702.01ms. Allocated memory is still 176.2MB. Free memory was 74.6MB in the beginning and 117.8MB in the end (delta: -43.2MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. * TraceAbstraction took 57889.86ms. Allocated memory was 176.2MB in the beginning and 578.8MB in the end (delta: 402.7MB). Free memory was 116.8MB in the beginning and 237.5MB in the end (delta: -120.7MB). Peak memory consumption was 282.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 810]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 811]: 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, 47 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: 57.8s, OverallIterations: 45, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2708 SdHoareTripleChecker+Valid, 10.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2351 mSDsluCounter, 577 SdHoareTripleChecker+Invalid, 9.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 484 mSDsCounter, 681 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15018 IncrementalHoareTripleChecker+Invalid, 15699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 681 mSolverCounterUnsat, 93 mSDtfsCounter, 15018 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=776occurred in iteration=23, InterpolantAutomatonStates: 349, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 40.5s InterpolantComputationTime, 692 NumberOfCodeBlocks, 692 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 26484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 45 InterpolantComputations, 45 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 20:14:41,533 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