./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_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.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_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 7724a2de 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/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_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-7724a2d-m [2024-06-28 03:10:36,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:10:36,411 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:10:36,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:10:36,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:10:36,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:10:36,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:10:36,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:10:36,441 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:10:36,441 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:10:36,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:10:36,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:10:36,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:10:36,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:10:36,442 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:10:36,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:10:36,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:10:36,443 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:10:36,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:10:36,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:10:36,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:10:36,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:10:36,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:10:36,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:10:36,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:10:36,445 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:10:36,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:10:36,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:10:36,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:10:36,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:10:36,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:10:36,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:10:36,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:10:36,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:10:36,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:10:36,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:10:36,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:10:36,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:10:36,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:10:36,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:10:36,447 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:10:36,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:10:36,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:10:36,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:10:36,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:10:36,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:10:36,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:10:36,722 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:10:36,723 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:10:36,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 03:10:36,861 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:10:36,861 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:10:36,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:10:37,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:10:38,104 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:10:38,108 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:10:38,122 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1560441ba/0ff2ed1b27694c99b3bb595d6ee5fe6d/FLAG03ece84ed [2024-06-28 03:10:38,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1560441ba/0ff2ed1b27694c99b3bb595d6ee5fe6d [2024-06-28 03:10:38,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:10:38,134 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:10:38,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:10:38,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:10:38,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:10:38,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:10:36" (1/2) ... [2024-06-28 03:10:38,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c09b3f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:10:38, skipping insertion in model container [2024-06-28 03:10:38,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:10:36" (1/2) ... [2024-06-28 03:10:38,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13397c31 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:10:38, skipping insertion in model container [2024-06-28 03:10:38,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:10:38" (2/2) ... [2024-06-28 03:10:38,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c09b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38, skipping insertion in model container [2024-06-28 03:10:38,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:10:38" (2/2) ... [2024-06-28 03:10:38,142 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:10:38,192 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:10:38,193 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:10:38,193 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:10:38,193 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:10:38,194 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-28 03:10:38,232 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:10:38,548 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:10:38,569 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:10:38,667 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:10:38,697 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:10:38,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38 WrapperNode [2024-06-28 03:10:38,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:10:38,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:10:38,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:10:38,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:10:38,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,765 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-28 03:10:38,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:10:38,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:10:38,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:10:38,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:10:38,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,780 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,797 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]. [2024-06-28 03:10:38,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,811 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:10:38,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:10:38,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:10:38,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:10:38,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (1/1) ... [2024-06-28 03:10:38,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:10:38,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:10:38,839 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) [2024-06-28 03:10:38,851 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 [2024-06-28 03:10:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:10:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:10:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:10:38,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:10:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:10:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:10:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:10:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:10:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:10:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:10:38,881 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:10:38,998 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:10:38,999 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:10:39,279 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:10:39,280 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:10:39,416 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:10:39,416 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:10:39,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:10:39 BoogieIcfgContainer [2024-06-28 03:10:39,418 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:10:39,421 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:10:39,421 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:10:39,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:10:39,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:10:36" (1/4) ... [2024-06-28 03:10:39,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d33ddf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:10:39, skipping insertion in model container [2024-06-28 03:10:39,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:10:38" (2/4) ... [2024-06-28 03:10:39,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d33ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:10:39, skipping insertion in model container [2024-06-28 03:10:39,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:10:38" (3/4) ... [2024-06-28 03:10:39,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d33ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:10:39, skipping insertion in model container [2024-06-28 03:10:39,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:10:39" (4/4) ... [2024-06-28 03:10:39,427 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:10:39,467 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:10:39,467 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:10:39,467 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:10:39,502 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:10:39,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 03:10:39,560 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-28 03:10:39,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:10:39,561 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 40 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. [2024-06-28 03:10:39,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 03:10:39,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-28 03:10:39,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:10:39,584 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;@22bc4269, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:10:39,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:10:39,588 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:10:39,588 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:10:39,588 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:10:39,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:39,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:10:39,589 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)] === [2024-06-28 03:10:39,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:39,593 INFO L85 PathProgramCache]: Analyzing trace with hash 325944614, now seen corresponding path program 1 times [2024-06-28 03:10:39,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:39,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364265092] [2024-06-28 03:10:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:39,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:40,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:40,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364265092] [2024-06-28 03:10:40,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364265092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:40,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:40,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:10:40,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37227260] [2024-06-28 03:10:40,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:40,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:10:40,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:10:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:10:40,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-28 03:10:40,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:40,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:40,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-28 03:10:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:40,436 INFO L124 PetriNetUnfolderBase]: 162/306 cut-off events. [2024-06-28 03:10:40,436 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:10:40,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 306 events. 162/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1107 event pairs, 97 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-28 03:10:40,440 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-28 03:10:40,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-28 03:10:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:10:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:10:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-28 03:10:40,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-28 03:10:40,453 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 53 transitions. [2024-06-28 03:10:40,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-28 03:10:40,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:10:40,457 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-28 03:10:40,459 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} [2024-06-28 03:10:40,464 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-28 03:10:40,464 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-28 03:10:40,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:40,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:40,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:40,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:10:40,465 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)] === [2024-06-28 03:10:40,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:40,466 INFO L85 PathProgramCache]: Analyzing trace with hash -299804411, now seen corresponding path program 1 times [2024-06-28 03:10:40,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:40,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499247328] [2024-06-28 03:10:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:40,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:40,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:40,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499247328] [2024-06-28 03:10:40,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499247328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:40,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:40,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:10:40,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869439862] [2024-06-28 03:10:40,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:40,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:10:40,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:10:40,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:10:40,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-28 03:10:40,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:40,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:40,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-28 03:10:40,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:41,029 INFO L124 PetriNetUnfolderBase]: 159/303 cut-off events. [2024-06-28 03:10:41,029 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-28 03:10:41,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 303 events. 159/303 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1097 event pairs, 79 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 679. Up to 274 conditions per place. [2024-06-28 03:10:41,035 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-28 03:10:41,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 155 flow [2024-06-28 03:10:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:10:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:10:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-28 03:10:41,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 03:10:41,038 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 68 transitions. [2024-06-28 03:10:41,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 155 flow [2024-06-28 03:10:41,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:10:41,042 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-28 03:10:41,042 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-28 03:10:41,042 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-28 03:10:41,043 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-28 03:10:41,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:41,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:41,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:41,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:10:41,044 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)] === [2024-06-28 03:10:41,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:41,046 INFO L85 PathProgramCache]: Analyzing trace with hash -704001021, now seen corresponding path program 1 times [2024-06-28 03:10:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:41,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997551837] [2024-06-28 03:10:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:41,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:41,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997551837] [2024-06-28 03:10:41,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997551837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:41,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:41,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:10:41,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849649411] [2024-06-28 03:10:41,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:41,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:10:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:10:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:10:41,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-28 03:10:41,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:41,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:41,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-28 03:10:41,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:41,606 INFO L124 PetriNetUnfolderBase]: 187/338 cut-off events. [2024-06-28 03:10:41,606 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-28 03:10:41,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 338 events. 187/338 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1201 event pairs, 67 based on Foata normal form. 3/340 useless extension candidates. Maximal degree in co-relation 852. Up to 293 conditions per place. [2024-06-28 03:10:41,608 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2024-06-28 03:10:41,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 249 flow [2024-06-28 03:10:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:10:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:10:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 03:10:41,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 03:10:41,611 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 85 transitions. [2024-06-28 03:10:41,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 249 flow [2024-06-28 03:10:41,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:10:41,614 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 160 flow [2024-06-28 03:10:41,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-06-28 03:10:41,615 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-28 03:10:41,615 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 160 flow [2024-06-28 03:10:41,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:41,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:41,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:41,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:10:41,616 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)] === [2024-06-28 03:10:41,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:41,616 INFO L85 PathProgramCache]: Analyzing trace with hash -210665862, now seen corresponding path program 1 times [2024-06-28 03:10:41,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:41,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789998044] [2024-06-28 03:10:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:41,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:42,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:42,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789998044] [2024-06-28 03:10:42,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789998044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:42,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:42,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:10:42,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403214614] [2024-06-28 03:10:42,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:42,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:10:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:42,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:10:42,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:10:42,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-28 03:10:42,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:42,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:42,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-28 03:10:42,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:42,361 INFO L124 PetriNetUnfolderBase]: 188/340 cut-off events. [2024-06-28 03:10:42,361 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-28 03:10:42,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 340 events. 188/340 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1187 event pairs, 46 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 1026. Up to 282 conditions per place. [2024-06-28 03:10:42,363 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 14 changer transitions 0/55 dead transitions. [2024-06-28 03:10:42,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 334 flow [2024-06-28 03:10:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:42,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 03:10:42,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 03:10:42,364 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 160 flow. Second operand 6 states and 100 transitions. [2024-06-28 03:10:42,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 334 flow [2024-06-28 03:10:42,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 330 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 03:10:42,368 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 212 flow [2024-06-28 03:10:42,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 03:10:42,369 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-28 03:10:42,369 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 212 flow [2024-06-28 03:10:42,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:42,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:42,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:42,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:10:42,370 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)] === [2024-06-28 03:10:42,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2059888706, now seen corresponding path program 1 times [2024-06-28 03:10:42,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:42,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345619064] [2024-06-28 03:10:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:42,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:42,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:42,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345619064] [2024-06-28 03:10:42,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345619064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:42,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:42,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:42,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446403668] [2024-06-28 03:10:42,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:42,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:42,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:42,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:42,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-28 03:10:42,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:42,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:42,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-28 03:10:42,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:43,118 INFO L124 PetriNetUnfolderBase]: 189/343 cut-off events. [2024-06-28 03:10:43,118 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-28 03:10:43,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 343 events. 189/343 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1206 event pairs, 24 based on Foata normal form. 6/348 useless extension candidates. Maximal degree in co-relation 1156. Up to 259 conditions per place. [2024-06-28 03:10:43,120 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-28 03:10:43,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 380 flow [2024-06-28 03:10:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 03:10:43,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 03:10:43,121 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 212 flow. Second operand 7 states and 110 transitions. [2024-06-28 03:10:43,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 380 flow [2024-06-28 03:10:43,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 348 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:43,123 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 215 flow [2024-06-28 03:10:43,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-28 03:10:43,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-28 03:10:43,124 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 215 flow [2024-06-28 03:10:43,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:43,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:43,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:43,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:10:43,124 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)] === [2024-06-28 03:10:43,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:43,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1384917533, now seen corresponding path program 1 times [2024-06-28 03:10:43,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:43,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487563322] [2024-06-28 03:10:43,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:43,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:43,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:43,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487563322] [2024-06-28 03:10:43,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487563322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:43,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:43,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:10:43,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260290606] [2024-06-28 03:10:43,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:43,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:10:43,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:43,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:10:43,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:10:43,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:43,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:43,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:43,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:43,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:43,657 INFO L124 PetriNetUnfolderBase]: 187/340 cut-off events. [2024-06-28 03:10:43,657 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-28 03:10:43,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 340 events. 187/340 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1200 event pairs, 47 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1202. Up to 329 conditions per place. [2024-06-28 03:10:43,659 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 34 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2024-06-28 03:10:43,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 307 flow [2024-06-28 03:10:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:10:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:10:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-06-28 03:10:43,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-28 03:10:43,660 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 215 flow. Second operand 5 states and 59 transitions. [2024-06-28 03:10:43,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 307 flow [2024-06-28 03:10:43,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 266 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:10:43,662 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 191 flow [2024-06-28 03:10:43,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-28 03:10:43,662 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-28 03:10:43,662 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 191 flow [2024-06-28 03:10:43,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:43,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:43,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:43,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:10:43,663 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)] === [2024-06-28 03:10:43,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash -17632073, now seen corresponding path program 1 times [2024-06-28 03:10:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:43,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897491772] [2024-06-28 03:10:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:43,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897491772] [2024-06-28 03:10:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897491772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:44,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:44,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:44,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016354149] [2024-06-28 03:10:44,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:44,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:44,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:44,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:44,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:44,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:44,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:44,295 INFO L124 PetriNetUnfolderBase]: 181/331 cut-off events. [2024-06-28 03:10:44,295 INFO L125 PetriNetUnfolderBase]: For 877/877 co-relation queries the response was YES. [2024-06-28 03:10:44,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 331 events. 181/331 cut-off events. For 877/877 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1146 event pairs, 44 based on Foata normal form. 3/333 useless extension candidates. Maximal degree in co-relation 1128. Up to 311 conditions per place. [2024-06-28 03:10:44,297 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-28 03:10:44,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 307 flow [2024-06-28 03:10:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:44,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-28 03:10:44,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:10:44,309 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 191 flow. Second operand 6 states and 70 transitions. [2024-06-28 03:10:44,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 307 flow [2024-06-28 03:10:44,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 292 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:44,311 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 209 flow [2024-06-28 03:10:44,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-28 03:10:44,311 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-28 03:10:44,311 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 209 flow [2024-06-28 03:10:44,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:44,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:44,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:44,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:10:44,312 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)] === [2024-06-28 03:10:44,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:44,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1376822006, now seen corresponding path program 1 times [2024-06-28 03:10:44,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:44,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899106561] [2024-06-28 03:10:44,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:44,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:44,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:44,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899106561] [2024-06-28 03:10:44,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899106561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:44,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:44,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:44,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424917411] [2024-06-28 03:10:44,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:44,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:44,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:44,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:44,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 209 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:44,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:44,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:44,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:44,936 INFO L124 PetriNetUnfolderBase]: 182/333 cut-off events. [2024-06-28 03:10:44,936 INFO L125 PetriNetUnfolderBase]: For 1009/1009 co-relation queries the response was YES. [2024-06-28 03:10:44,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 333 events. 182/333 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1146 event pairs, 43 based on Foata normal form. 2/334 useless extension candidates. Maximal degree in co-relation 1200. Up to 288 conditions per place. [2024-06-28 03:10:44,938 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 36 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-06-28 03:10:44,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 358 flow [2024-06-28 03:10:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-28 03:10:44,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 03:10:44,939 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 209 flow. Second operand 6 states and 76 transitions. [2024-06-28 03:10:44,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 358 flow [2024-06-28 03:10:44,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 341 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:44,941 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 240 flow [2024-06-28 03:10:44,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-28 03:10:44,941 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-06-28 03:10:44,941 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 240 flow [2024-06-28 03:10:44,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:44,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:44,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:44,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:10:44,942 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)] === [2024-06-28 03:10:44,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:44,942 INFO L85 PathProgramCache]: Analyzing trace with hash -534088964, now seen corresponding path program 2 times [2024-06-28 03:10:44,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:44,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348066661] [2024-06-28 03:10:44,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:44,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:45,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:45,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348066661] [2024-06-28 03:10:45,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348066661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:45,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:45,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:45,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690228097] [2024-06-28 03:10:45,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:45,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:45,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:45,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:45,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:45,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:45,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:45,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:45,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:45,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:45,533 INFO L124 PetriNetUnfolderBase]: 177/323 cut-off events. [2024-06-28 03:10:45,533 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-06-28 03:10:45,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 323 events. 177/323 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1094 event pairs, 42 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 1201. Up to 309 conditions per place. [2024-06-28 03:10:45,535 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-28 03:10:45,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 344 flow [2024-06-28 03:10:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-28 03:10:45,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 03:10:45,536 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 240 flow. Second operand 6 states and 68 transitions. [2024-06-28 03:10:45,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 344 flow [2024-06-28 03:10:45,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 329 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:45,538 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 246 flow [2024-06-28 03:10:45,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-28 03:10:45,539 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-28 03:10:45,539 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 246 flow [2024-06-28 03:10:45,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:45,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:45,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:45,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:10:45,539 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)] === [2024-06-28 03:10:45,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 268191758, now seen corresponding path program 1 times [2024-06-28 03:10:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769888510] [2024-06-28 03:10:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:46,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:46,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769888510] [2024-06-28 03:10:46,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769888510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:46,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:46,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:46,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770753974] [2024-06-28 03:10:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:46,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:46,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:46,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:46,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 246 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:46,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:46,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:46,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:46,202 INFO L124 PetriNetUnfolderBase]: 215/385 cut-off events. [2024-06-28 03:10:46,202 INFO L125 PetriNetUnfolderBase]: For 1805/1805 co-relation queries the response was YES. [2024-06-28 03:10:46,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 385 events. 215/385 cut-off events. For 1805/1805 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1393 event pairs, 48 based on Foata normal form. 6/390 useless extension candidates. Maximal degree in co-relation 1435. Up to 276 conditions per place. [2024-06-28 03:10:46,204 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 45 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2024-06-28 03:10:46,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 456 flow [2024-06-28 03:10:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-28 03:10:46,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-28 03:10:46,205 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 246 flow. Second operand 7 states and 92 transitions. [2024-06-28 03:10:46,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 456 flow [2024-06-28 03:10:46,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 422 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:46,207 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 295 flow [2024-06-28 03:10:46,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-28 03:10:46,208 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-28 03:10:46,208 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 295 flow [2024-06-28 03:10:46,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:46,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:46,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:46,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:10:46,209 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)] === [2024-06-28 03:10:46,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash 623112284, now seen corresponding path program 2 times [2024-06-28 03:10:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:46,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371526233] [2024-06-28 03:10:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:46,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:46,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:46,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371526233] [2024-06-28 03:10:46,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371526233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:46,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:46,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:46,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487060276] [2024-06-28 03:10:46,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:46,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:46,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:46,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:46,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 295 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:46,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:46,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:46,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:46,895 INFO L124 PetriNetUnfolderBase]: 224/400 cut-off events. [2024-06-28 03:10:46,895 INFO L125 PetriNetUnfolderBase]: For 2141/2141 co-relation queries the response was YES. [2024-06-28 03:10:46,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 400 events. 224/400 cut-off events. For 2141/2141 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1446 event pairs, 48 based on Foata normal form. 3/402 useless extension candidates. Maximal degree in co-relation 1647. Up to 360 conditions per place. [2024-06-28 03:10:46,897 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2024-06-28 03:10:46,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 497 flow [2024-06-28 03:10:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 03:10:46,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:10:46,898 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 295 flow. Second operand 7 states and 84 transitions. [2024-06-28 03:10:46,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 497 flow [2024-06-28 03:10:46,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 482 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 03:10:46,901 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 343 flow [2024-06-28 03:10:46,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-06-28 03:10:46,902 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-28 03:10:46,902 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 343 flow [2024-06-28 03:10:46,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:46,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:46,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:46,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:10:46,902 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)] === [2024-06-28 03:10:46,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1955003612, now seen corresponding path program 3 times [2024-06-28 03:10:46,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:46,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157742604] [2024-06-28 03:10:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:46,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157742604] [2024-06-28 03:10:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157742604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:47,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:47,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:47,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748703356] [2024-06-28 03:10:47,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:47,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:47,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:47,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:47,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:47,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:47,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:47,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:47,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:47,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:47,593 INFO L124 PetriNetUnfolderBase]: 218/391 cut-off events. [2024-06-28 03:10:47,593 INFO L125 PetriNetUnfolderBase]: For 2396/2396 co-relation queries the response was YES. [2024-06-28 03:10:47,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 391 events. 218/391 cut-off events. For 2396/2396 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1413 event pairs, 50 based on Foata normal form. 3/393 useless extension candidates. Maximal degree in co-relation 1648. Up to 368 conditions per place. [2024-06-28 03:10:47,595 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2024-06-28 03:10:47,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 483 flow [2024-06-28 03:10:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 03:10:47,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-28 03:10:47,596 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 343 flow. Second operand 7 states and 79 transitions. [2024-06-28 03:10:47,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 483 flow [2024-06-28 03:10:47,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 459 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:47,600 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 344 flow [2024-06-28 03:10:47,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-06-28 03:10:47,601 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-28 03:10:47,601 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 344 flow [2024-06-28 03:10:47,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:47,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:47,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:10:47,601 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)] === [2024-06-28 03:10:47,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash -279804311, now seen corresponding path program 1 times [2024-06-28 03:10:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:47,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818326671] [2024-06-28 03:10:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:48,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:48,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818326671] [2024-06-28 03:10:48,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818326671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:48,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:48,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:48,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925407784] [2024-06-28 03:10:48,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:48,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:48,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:48,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:48,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:48,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 344 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) [2024-06-28 03:10:48,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:48,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:48,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:48,430 INFO L124 PetriNetUnfolderBase]: 221/396 cut-off events. [2024-06-28 03:10:48,430 INFO L125 PetriNetUnfolderBase]: For 2546/2546 co-relation queries the response was YES. [2024-06-28 03:10:48,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1726 conditions, 396 events. 221/396 cut-off events. For 2546/2546 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1440 event pairs, 50 based on Foata normal form. 1/396 useless extension candidates. Maximal degree in co-relation 1694. Up to 334 conditions per place. [2024-06-28 03:10:48,432 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 51 selfloop transitions, 17 changer transitions 0/70 dead transitions. [2024-06-28 03:10:48,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 562 flow [2024-06-28 03:10:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 03:10:48,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-28 03:10:48,433 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 344 flow. Second operand 7 states and 88 transitions. [2024-06-28 03:10:48,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 562 flow [2024-06-28 03:10:48,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 536 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:48,438 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 385 flow [2024-06-28 03:10:48,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-28 03:10:48,439 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-28 03:10:48,439 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 385 flow [2024-06-28 03:10:48,439 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) [2024-06-28 03:10:48,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:48,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:48,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:10:48,439 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)] === [2024-06-28 03:10:48,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash -279714101, now seen corresponding path program 2 times [2024-06-28 03:10:48,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:48,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659209046] [2024-06-28 03:10:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:48,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:49,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:49,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659209046] [2024-06-28 03:10:49,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659209046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:49,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:49,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:49,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171654226] [2024-06-28 03:10:49,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:49,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:49,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:49,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:49,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:49,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:49,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 385 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) [2024-06-28 03:10:49,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:49,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:49,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:49,177 INFO L124 PetriNetUnfolderBase]: 219/393 cut-off events. [2024-06-28 03:10:49,177 INFO L125 PetriNetUnfolderBase]: For 2869/2869 co-relation queries the response was YES. [2024-06-28 03:10:49,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 393 events. 219/393 cut-off events. For 2869/2869 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1408 event pairs, 50 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 1741. Up to 347 conditions per place. [2024-06-28 03:10:49,179 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-28 03:10:49,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 537 flow [2024-06-28 03:10:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 03:10:49,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:10:49,180 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 385 flow. Second operand 7 states and 84 transitions. [2024-06-28 03:10:49,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 537 flow [2024-06-28 03:10:49,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 512 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:49,184 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 395 flow [2024-06-28 03:10:49,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=395, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-06-28 03:10:49,184 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-28 03:10:49,184 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 395 flow [2024-06-28 03:10:49,185 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) [2024-06-28 03:10:49,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:49,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:49,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:10:49,185 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)] === [2024-06-28 03:10:49,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash -275989296, now seen corresponding path program 1 times [2024-06-28 03:10:49,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:49,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998025417] [2024-06-28 03:10:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998025417] [2024-06-28 03:10:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998025417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:49,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:49,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:49,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308724833] [2024-06-28 03:10:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:49,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:49,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:49,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:49,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:49,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:49,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 395 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:49,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:49,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:49,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:50,019 INFO L124 PetriNetUnfolderBase]: 228/408 cut-off events. [2024-06-28 03:10:50,020 INFO L125 PetriNetUnfolderBase]: For 3527/3527 co-relation queries the response was YES. [2024-06-28 03:10:50,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 408 events. 228/408 cut-off events. For 3527/3527 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1501 event pairs, 47 based on Foata normal form. 3/410 useless extension candidates. Maximal degree in co-relation 1842. Up to 287 conditions per place. [2024-06-28 03:10:50,024 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 53 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2024-06-28 03:10:50,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 631 flow [2024-06-28 03:10:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:50,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 03:10:50,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-28 03:10:50,025 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 395 flow. Second operand 8 states and 103 transitions. [2024-06-28 03:10:50,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 631 flow [2024-06-28 03:10:50,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 593 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:50,033 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 418 flow [2024-06-28 03:10:50,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=418, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-06-28 03:10:50,035 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-28 03:10:50,035 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 418 flow [2024-06-28 03:10:50,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:50,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:50,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:50,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:10:50,035 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)] === [2024-06-28 03:10:50,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:50,035 INFO L85 PathProgramCache]: Analyzing trace with hash -727896428, now seen corresponding path program 2 times [2024-06-28 03:10:50,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:50,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259604360] [2024-06-28 03:10:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:50,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:50,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:50,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259604360] [2024-06-28 03:10:50,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259604360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:50,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:50,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:50,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938183465] [2024-06-28 03:10:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:50,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:50,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:50,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 418 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) [2024-06-28 03:10:50,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:50,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:50,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:50,692 INFO L124 PetriNetUnfolderBase]: 237/423 cut-off events. [2024-06-28 03:10:50,693 INFO L125 PetriNetUnfolderBase]: For 4105/4105 co-relation queries the response was YES. [2024-06-28 03:10:50,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 423 events. 237/423 cut-off events. For 4105/4105 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1579 event pairs, 45 based on Foata normal form. 3/425 useless extension candidates. Maximal degree in co-relation 1961. Up to 295 conditions per place. [2024-06-28 03:10:50,695 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-28 03:10:50,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 674 flow [2024-06-28 03:10:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 03:10:50,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-28 03:10:50,696 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 418 flow. Second operand 7 states and 97 transitions. [2024-06-28 03:10:50,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 674 flow [2024-06-28 03:10:50,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 622 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:50,701 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 441 flow [2024-06-28 03:10:50,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-28 03:10:50,702 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-28 03:10:50,702 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 441 flow [2024-06-28 03:10:50,702 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) [2024-06-28 03:10:50,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:50,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:10:50,702 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)] === [2024-06-28 03:10:50,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2144231195, now seen corresponding path program 1 times [2024-06-28 03:10:50,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:50,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215701159] [2024-06-28 03:10:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:51,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:51,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215701159] [2024-06-28 03:10:51,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215701159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:51,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:51,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:51,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698103649] [2024-06-28 03:10:51,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:51,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:51,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:51,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:51,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:51,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:51,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 441 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:51,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:51,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:51,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:51,605 INFO L124 PetriNetUnfolderBase]: 233/417 cut-off events. [2024-06-28 03:10:51,605 INFO L125 PetriNetUnfolderBase]: For 4236/4236 co-relation queries the response was YES. [2024-06-28 03:10:51,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 417 events. 233/417 cut-off events. For 4236/4236 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1535 event pairs, 45 based on Foata normal form. 2/418 useless extension candidates. Maximal degree in co-relation 1950. Up to 389 conditions per place. [2024-06-28 03:10:51,608 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 58 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-28 03:10:51,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 619 flow [2024-06-28 03:10:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:10:51,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:10:51,609 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 441 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:10:51,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 619 flow [2024-06-28 03:10:51,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 575 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:51,614 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 446 flow [2024-06-28 03:10:51,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-06-28 03:10:51,614 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-28 03:10:51,614 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 446 flow [2024-06-28 03:10:51,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:51,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:51,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:51,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:10:51,615 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)] === [2024-06-28 03:10:51,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash 475570626, now seen corresponding path program 3 times [2024-06-28 03:10:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:51,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991213378] [2024-06-28 03:10:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:52,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:52,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991213378] [2024-06-28 03:10:52,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991213378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:52,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:52,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:52,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867042011] [2024-06-28 03:10:52,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:52,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:52,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:52,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:52,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:52,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:52,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 446 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:52,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:52,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:52,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:52,421 INFO L124 PetriNetUnfolderBase]: 242/432 cut-off events. [2024-06-28 03:10:52,421 INFO L125 PetriNetUnfolderBase]: For 4725/4725 co-relation queries the response was YES. [2024-06-28 03:10:52,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 432 events. 242/432 cut-off events. For 4725/4725 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1624 event pairs, 50 based on Foata normal form. 3/434 useless extension candidates. Maximal degree in co-relation 2000. Up to 396 conditions per place. [2024-06-28 03:10:52,424 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 61 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2024-06-28 03:10:52,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 653 flow [2024-06-28 03:10:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:10:52,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:10:52,425 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 446 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:10:52,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 653 flow [2024-06-28 03:10:52,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 615 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:52,432 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 479 flow [2024-06-28 03:10:52,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=479, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-06-28 03:10:52,433 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-28 03:10:52,433 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 479 flow [2024-06-28 03:10:52,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:52,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:52,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:52,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:10:52,433 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)] === [2024-06-28 03:10:52,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:52,433 INFO L85 PathProgramCache]: Analyzing trace with hash 468218976, now seen corresponding path program 4 times [2024-06-28 03:10:52,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:52,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316073022] [2024-06-28 03:10:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:52,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316073022] [2024-06-28 03:10:52,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316073022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:52,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:52,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:52,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570695297] [2024-06-28 03:10:52,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:52,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:52,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:52,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:52,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 479 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:52,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:52,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:52,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:53,117 INFO L124 PetriNetUnfolderBase]: 236/423 cut-off events. [2024-06-28 03:10:53,118 INFO L125 PetriNetUnfolderBase]: For 4879/4879 co-relation queries the response was YES. [2024-06-28 03:10:53,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 423 events. 236/423 cut-off events. For 4879/4879 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1591 event pairs, 44 based on Foata normal form. 3/425 useless extension candidates. Maximal degree in co-relation 1956. Up to 375 conditions per place. [2024-06-28 03:10:53,120 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 61 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-28 03:10:53,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 667 flow [2024-06-28 03:10:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:10:53,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-28 03:10:53,123 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 479 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:10:53,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 667 flow [2024-06-28 03:10:53,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 638 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:53,131 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 487 flow [2024-06-28 03:10:53,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-06-28 03:10:53,131 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-28 03:10:53,131 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 487 flow [2024-06-28 03:10:53,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:53,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:53,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:53,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:10:53,132 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)] === [2024-06-28 03:10:53,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1290067713, now seen corresponding path program 1 times [2024-06-28 03:10:53,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:53,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354187699] [2024-06-28 03:10:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:54,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:54,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354187699] [2024-06-28 03:10:54,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354187699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:54,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:54,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:54,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660970296] [2024-06-28 03:10:54,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:54,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:54,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:54,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:54,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:54,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:54,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 487 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:54,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:54,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:54,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:54,392 INFO L124 PetriNetUnfolderBase]: 233/418 cut-off events. [2024-06-28 03:10:54,392 INFO L125 PetriNetUnfolderBase]: For 4905/4905 co-relation queries the response was YES. [2024-06-28 03:10:54,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 418 events. 233/418 cut-off events. For 4905/4905 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1545 event pairs, 46 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 1941. Up to 392 conditions per place. [2024-06-28 03:10:54,394 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 61 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-06-28 03:10:54,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 75 transitions, 653 flow [2024-06-28 03:10:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:10:54,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 03:10:54,395 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 487 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:10:54,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 75 transitions, 653 flow [2024-06-28 03:10:54,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 587 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:10:54,402 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 449 flow [2024-06-28 03:10:54,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-06-28 03:10:54,402 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-28 03:10:54,402 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 449 flow [2024-06-28 03:10:54,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:54,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:54,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:54,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:10:54,402 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)] === [2024-06-28 03:10:54,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:54,403 INFO L85 PathProgramCache]: Analyzing trace with hash -84058639, now seen corresponding path program 1 times [2024-06-28 03:10:54,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:54,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006118481] [2024-06-28 03:10:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:54,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:55,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:55,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006118481] [2024-06-28 03:10:55,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006118481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:55,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:55,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470842644] [2024-06-28 03:10:55,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:55,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:55,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:55,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:55,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 449 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) [2024-06-28 03:10:55,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:55,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:55,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:55,239 INFO L124 PetriNetUnfolderBase]: 237/426 cut-off events. [2024-06-28 03:10:55,239 INFO L125 PetriNetUnfolderBase]: For 5297/5297 co-relation queries the response was YES. [2024-06-28 03:10:55,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1980 conditions, 426 events. 237/426 cut-off events. For 5297/5297 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1603 event pairs, 33 based on Foata normal form. 2/427 useless extension candidates. Maximal degree in co-relation 1938. Up to 322 conditions per place. [2024-06-28 03:10:55,242 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 60 selfloop transitions, 21 changer transitions 0/83 dead transitions. [2024-06-28 03:10:55,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 703 flow [2024-06-28 03:10:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:10:55,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:10:55,243 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 449 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:10:55,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 703 flow [2024-06-28 03:10:55,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 670 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:55,251 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 472 flow [2024-06-28 03:10:55,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=472, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2024-06-28 03:10:55,252 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-28 03:10:55,252 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 472 flow [2024-06-28 03:10:55,252 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) [2024-06-28 03:10:55,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:55,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:55,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:10:55,252 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)] === [2024-06-28 03:10:55,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:55,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1208044413, now seen corresponding path program 2 times [2024-06-28 03:10:55,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:55,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355805315] [2024-06-28 03:10:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:55,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:55,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:55,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355805315] [2024-06-28 03:10:55,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355805315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:55,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:55,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:55,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475678007] [2024-06-28 03:10:55,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:55,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:55,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:55,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:55,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:55,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 472 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) [2024-06-28 03:10:55,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:55,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:55,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:56,064 INFO L124 PetriNetUnfolderBase]: 241/434 cut-off events. [2024-06-28 03:10:56,064 INFO L125 PetriNetUnfolderBase]: For 5846/5846 co-relation queries the response was YES. [2024-06-28 03:10:56,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 434 events. 241/434 cut-off events. For 5846/5846 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1648 event pairs, 50 based on Foata normal form. 2/435 useless extension candidates. Maximal degree in co-relation 2018. Up to 367 conditions per place. [2024-06-28 03:10:56,067 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 61 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2024-06-28 03:10:56,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 82 transitions, 682 flow [2024-06-28 03:10:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:10:56,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:10:56,068 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 472 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:10:56,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 82 transitions, 682 flow [2024-06-28 03:10:56,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 631 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:10:56,076 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 477 flow [2024-06-28 03:10:56,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=86, PETRI_TRANSITIONS=68} [2024-06-28 03:10:56,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-28 03:10:56,077 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 477 flow [2024-06-28 03:10:56,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:56,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:56,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:56,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:10:56,077 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)] === [2024-06-28 03:10:56,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:56,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1208044289, now seen corresponding path program 1 times [2024-06-28 03:10:56,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:56,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458934968] [2024-06-28 03:10:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:56,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:56,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:56,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458934968] [2024-06-28 03:10:56,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458934968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:56,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:56,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639178440] [2024-06-28 03:10:56,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:56,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:56,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:56,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:56,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 477 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) [2024-06-28 03:10:56,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:56,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:56,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:57,000 INFO L124 PetriNetUnfolderBase]: 260/465 cut-off events. [2024-06-28 03:10:57,000 INFO L125 PetriNetUnfolderBase]: For 7109/7109 co-relation queries the response was YES. [2024-06-28 03:10:57,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 465 events. 260/465 cut-off events. For 7109/7109 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1819 event pairs, 46 based on Foata normal form. 3/467 useless extension candidates. Maximal degree in co-relation 2161. Up to 267 conditions per place. [2024-06-28 03:10:57,003 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 56 selfloop transitions, 38 changer transitions 0/96 dead transitions. [2024-06-28 03:10:57,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 803 flow [2024-06-28 03:10:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:10:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:10:57,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 03:10:57,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-28 03:10:57,004 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 477 flow. Second operand 10 states and 128 transitions. [2024-06-28 03:10:57,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 803 flow [2024-06-28 03:10:57,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 754 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:57,012 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 566 flow [2024-06-28 03:10:57,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=566, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-06-28 03:10:57,013 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-06-28 03:10:57,013 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 566 flow [2024-06-28 03:10:57,013 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) [2024-06-28 03:10:57,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:57,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:57,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:10:57,013 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)] === [2024-06-28 03:10:57,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:57,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1205247903, now seen corresponding path program 3 times [2024-06-28 03:10:57,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:57,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651557677] [2024-06-28 03:10:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:57,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:57,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651557677] [2024-06-28 03:10:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651557677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:57,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:57,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:57,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31159220] [2024-06-28 03:10:57,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:57,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:57,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:57,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:57,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:57,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 566 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) [2024-06-28 03:10:57,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:57,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:57,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:57,883 INFO L124 PetriNetUnfolderBase]: 257/460 cut-off events. [2024-06-28 03:10:57,883 INFO L125 PetriNetUnfolderBase]: For 7077/7077 co-relation queries the response was YES. [2024-06-28 03:10:57,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 460 events. 257/460 cut-off events. For 7077/7077 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1770 event pairs, 53 based on Foata normal form. 2/461 useless extension candidates. Maximal degree in co-relation 2264. Up to 408 conditions per place. [2024-06-28 03:10:57,886 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 66 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-06-28 03:10:57,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 85 transitions, 760 flow [2024-06-28 03:10:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 03:10:57,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 03:10:57,901 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 566 flow. Second operand 8 states and 93 transitions. [2024-06-28 03:10:57,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 85 transitions, 760 flow [2024-06-28 03:10:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 85 transitions, 698 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:57,910 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 542 flow [2024-06-28 03:10:57,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=542, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2024-06-28 03:10:57,911 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-28 03:10:57,911 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 542 flow [2024-06-28 03:10:57,911 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) [2024-06-28 03:10:57,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:57,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:57,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:10:57,911 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)] === [2024-06-28 03:10:57,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:57,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1089956609, now seen corresponding path program 2 times [2024-06-28 03:10:57,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:57,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553023062] [2024-06-28 03:10:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:57,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:58,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:58,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553023062] [2024-06-28 03:10:58,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553023062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:58,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:58,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:58,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874812755] [2024-06-28 03:10:58,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:58,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:58,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 542 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) [2024-06-28 03:10:58,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:58,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:58,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:58,861 INFO L124 PetriNetUnfolderBase]: 266/475 cut-off events. [2024-06-28 03:10:58,861 INFO L125 PetriNetUnfolderBase]: For 7809/7809 co-relation queries the response was YES. [2024-06-28 03:10:58,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 475 events. 266/475 cut-off events. For 7809/7809 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1856 event pairs, 37 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2326. Up to 293 conditions per place. [2024-06-28 03:10:58,864 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 63 selfloop transitions, 38 changer transitions 0/103 dead transitions. [2024-06-28 03:10:58,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 103 transitions, 899 flow [2024-06-28 03:10:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:58,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 03:10:58,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-28 03:10:58,865 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 542 flow. Second operand 9 states and 124 transitions. [2024-06-28 03:10:58,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 103 transitions, 899 flow [2024-06-28 03:10:58,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 103 transitions, 856 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:58,878 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 605 flow [2024-06-28 03:10:58,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=605, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-06-28 03:10:58,878 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-06-28 03:10:58,878 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 605 flow [2024-06-28 03:10:58,879 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) [2024-06-28 03:10:58,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:58,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:58,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:10:58,879 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)] === [2024-06-28 03:10:58,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:58,879 INFO L85 PathProgramCache]: Analyzing trace with hash 34267245, now seen corresponding path program 3 times [2024-06-28 03:10:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738191472] [2024-06-28 03:10:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:59,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:59,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738191472] [2024-06-28 03:10:59,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738191472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:59,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:59,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:59,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139903031] [2024-06-28 03:10:59,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:59,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:59,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:59,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:59,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:10:59,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 605 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:59,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:59,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:10:59,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:59,999 INFO L124 PetriNetUnfolderBase]: 269/480 cut-off events. [2024-06-28 03:11:00,000 INFO L125 PetriNetUnfolderBase]: For 7941/7941 co-relation queries the response was YES. [2024-06-28 03:11:00,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 480 events. 269/480 cut-off events. For 7941/7941 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1891 event pairs, 46 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2461. Up to 407 conditions per place. [2024-06-28 03:11:00,003 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 75 selfloop transitions, 24 changer transitions 0/101 dead transitions. [2024-06-28 03:11:00,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 101 transitions, 945 flow [2024-06-28 03:11:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:11:00,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:11:00,004 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 605 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:11:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 101 transitions, 945 flow [2024-06-28 03:11:00,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 843 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:00,017 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 693 flow [2024-06-28 03:11:00,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=693, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2024-06-28 03:11:00,018 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-28 03:11:00,018 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 693 flow [2024-06-28 03:11:00,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:00,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:00,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:00,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:11:00,018 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)] === [2024-06-28 03:11:00,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2038377497, now seen corresponding path program 4 times [2024-06-28 03:11:00,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:00,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558973190] [2024-06-28 03:11:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:00,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:00,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:00,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558973190] [2024-06-28 03:11:00,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558973190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:00,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:00,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:00,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647095092] [2024-06-28 03:11:00,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:00,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:00,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:00,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:00,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 693 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:00,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:00,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:00,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:01,049 INFO L124 PetriNetUnfolderBase]: 272/485 cut-off events. [2024-06-28 03:11:01,050 INFO L125 PetriNetUnfolderBase]: For 8580/8580 co-relation queries the response was YES. [2024-06-28 03:11:01,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 485 events. 272/485 cut-off events. For 8580/8580 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1916 event pairs, 48 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 2506. Up to 462 conditions per place. [2024-06-28 03:11:01,053 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 84 selfloop transitions, 15 changer transitions 0/101 dead transitions. [2024-06-28 03:11:01,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 956 flow [2024-06-28 03:11:01,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:11:01,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:11:01,054 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 693 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:11:01,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 956 flow [2024-06-28 03:11:01,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 901 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:01,066 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 731 flow [2024-06-28 03:11:01,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=731, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-06-28 03:11:01,067 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-28 03:11:01,067 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 731 flow [2024-06-28 03:11:01,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:01,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:01,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:01,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:11:01,068 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)] === [2024-06-28 03:11:01,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:01,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1573882217, now seen corresponding path program 5 times [2024-06-28 03:11:01,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:01,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217893554] [2024-06-28 03:11:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:01,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:01,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:01,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217893554] [2024-06-28 03:11:01,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217893554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:01,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:01,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:01,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477912771] [2024-06-28 03:11:01,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:01,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:01,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:01,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 731 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:01,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:01,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:01,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:02,024 INFO L124 PetriNetUnfolderBase]: 270/482 cut-off events. [2024-06-28 03:11:02,024 INFO L125 PetriNetUnfolderBase]: For 8785/8785 co-relation queries the response was YES. [2024-06-28 03:11:02,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 482 events. 270/482 cut-off events. For 8785/8785 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1891 event pairs, 46 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2470. Up to 453 conditions per place. [2024-06-28 03:11:02,027 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 85 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2024-06-28 03:11:02,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 105 transitions, 989 flow [2024-06-28 03:11:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:11:02,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:11:02,031 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 731 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:11:02,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 105 transitions, 989 flow [2024-06-28 03:11:02,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 105 transitions, 969 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:02,048 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 795 flow [2024-06-28 03:11:02,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=795, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2024-06-28 03:11:02,053 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-28 03:11:02,054 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 795 flow [2024-06-28 03:11:02,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:02,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:02,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:02,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:11:02,054 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)] === [2024-06-28 03:11:02,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1337700161, now seen corresponding path program 1 times [2024-06-28 03:11:02,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:02,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459129038] [2024-06-28 03:11:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:02,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:02,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:02,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459129038] [2024-06-28 03:11:02,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459129038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:02,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:02,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:02,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3167968] [2024-06-28 03:11:02,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:02,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:02,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:02,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:02,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:02,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:02,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 795 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:02,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:02,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:02,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:03,138 INFO L124 PetriNetUnfolderBase]: 266/476 cut-off events. [2024-06-28 03:11:03,138 INFO L125 PetriNetUnfolderBase]: For 9062/9062 co-relation queries the response was YES. [2024-06-28 03:11:03,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 476 events. 266/476 cut-off events. For 9062/9062 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1860 event pairs, 41 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2459. Up to 440 conditions per place. [2024-06-28 03:11:03,141 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 93 selfloop transitions, 15 changer transitions 0/110 dead transitions. [2024-06-28 03:11:03,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 110 transitions, 1049 flow [2024-06-28 03:11:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:11:03,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-28 03:11:03,144 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 795 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:11:03,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 110 transitions, 1049 flow [2024-06-28 03:11:03,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 110 transitions, 1017 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:03,157 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 816 flow [2024-06-28 03:11:03,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=816, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2024-06-28 03:11:03,160 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-28 03:11:03,160 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 816 flow [2024-06-28 03:11:03,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:03,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:03,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:03,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:11:03,161 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)] === [2024-06-28 03:11:03,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:03,161 INFO L85 PathProgramCache]: Analyzing trace with hash 51100709, now seen corresponding path program 1 times [2024-06-28 03:11:03,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:03,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581871717] [2024-06-28 03:11:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:03,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:03,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:03,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581871717] [2024-06-28 03:11:03,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581871717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:03,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:03,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411313188] [2024-06-28 03:11:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:03,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:03,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 816 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) [2024-06-28 03:11:03,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:03,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:03,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:04,165 INFO L124 PetriNetUnfolderBase]: 270/484 cut-off events. [2024-06-28 03:11:04,166 INFO L125 PetriNetUnfolderBase]: For 9672/9672 co-relation queries the response was YES. [2024-06-28 03:11:04,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2597 conditions, 484 events. 270/484 cut-off events. For 9672/9672 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1923 event pairs, 29 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2539. Up to 294 conditions per place. [2024-06-28 03:11:04,169 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 80 selfloop transitions, 38 changer transitions 0/120 dead transitions. [2024-06-28 03:11:04,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 1175 flow [2024-06-28 03:11:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 03:11:04,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:11:04,171 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 816 flow. Second operand 9 states and 108 transitions. [2024-06-28 03:11:04,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 1175 flow [2024-06-28 03:11:04,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 1138 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:04,186 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 902 flow [2024-06-28 03:11:04,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=902, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2024-06-28 03:11:04,186 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-28 03:11:04,186 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 902 flow [2024-06-28 03:11:04,187 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) [2024-06-28 03:11:04,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:04,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:04,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:11:04,187 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)] === [2024-06-28 03:11:04,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:04,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1205333720, now seen corresponding path program 1 times [2024-06-28 03:11:04,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:04,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226752341] [2024-06-28 03:11:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:04,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:04,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:04,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226752341] [2024-06-28 03:11:04,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226752341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:04,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:04,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:04,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910137068] [2024-06-28 03:11:04,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:04,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:04,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:04,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:04,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:04,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 902 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) [2024-06-28 03:11:04,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:04,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:04,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:05,237 INFO L124 PetriNetUnfolderBase]: 279/499 cut-off events. [2024-06-28 03:11:05,237 INFO L125 PetriNetUnfolderBase]: For 10473/10473 co-relation queries the response was YES. [2024-06-28 03:11:05,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2780 conditions, 499 events. 279/499 cut-off events. For 10473/10473 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2000 event pairs, 35 based on Foata normal form. 2/500 useless extension candidates. Maximal degree in co-relation 2720. Up to 245 conditions per place. [2024-06-28 03:11:05,240 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 73 selfloop transitions, 52 changer transitions 0/127 dead transitions. [2024-06-28 03:11:05,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 127 transitions, 1312 flow [2024-06-28 03:11:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 03:11:05,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-28 03:11:05,242 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 902 flow. Second operand 9 states and 116 transitions. [2024-06-28 03:11:05,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 127 transitions, 1312 flow [2024-06-28 03:11:05,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 127 transitions, 1217 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:05,258 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 977 flow [2024-06-28 03:11:05,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=977, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2024-06-28 03:11:05,259 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-06-28 03:11:05,259 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 977 flow [2024-06-28 03:11:05,259 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) [2024-06-28 03:11:05,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:05,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:05,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:11:05,259 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)] === [2024-06-28 03:11:05,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1205333565, now seen corresponding path program 2 times [2024-06-28 03:11:05,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:05,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147185015] [2024-06-28 03:11:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:05,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:05,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147185015] [2024-06-28 03:11:05,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147185015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:05,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:05,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:05,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132443550] [2024-06-28 03:11:05,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:05,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:06,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:06,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 977 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) [2024-06-28 03:11:06,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:06,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:06,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:06,340 INFO L124 PetriNetUnfolderBase]: 307/559 cut-off events. [2024-06-28 03:11:06,341 INFO L125 PetriNetUnfolderBase]: For 17894/17894 co-relation queries the response was YES. [2024-06-28 03:11:06,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 559 events. 307/559 cut-off events. For 17894/17894 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2365 event pairs, 41 based on Foata normal form. 16/574 useless extension candidates. Maximal degree in co-relation 2939. Up to 288 conditions per place. [2024-06-28 03:11:06,344 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 72 selfloop transitions, 55 changer transitions 8/137 dead transitions. [2024-06-28 03:11:06,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 137 transitions, 1412 flow [2024-06-28 03:11:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:06,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:11:06,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 03:11:06,345 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 977 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:11:06,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 137 transitions, 1412 flow [2024-06-28 03:11:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 137 transitions, 1349 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:06,368 INFO L231 Difference]: Finished difference. Result has 129 places, 107 transitions, 1030 flow [2024-06-28 03:11:06,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1030, PETRI_PLACES=129, PETRI_TRANSITIONS=107} [2024-06-28 03:11:06,368 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-06-28 03:11:06,369 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 107 transitions, 1030 flow [2024-06-28 03:11:06,369 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) [2024-06-28 03:11:06,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:06,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:06,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:11:06,369 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:06,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1205329845, now seen corresponding path program 3 times [2024-06-28 03:11:06,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:06,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717440704] [2024-06-28 03:11:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:06,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:07,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:07,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717440704] [2024-06-28 03:11:07,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717440704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:07,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:07,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:07,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466012897] [2024-06-28 03:11:07,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:07,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:07,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:07,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:07,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 107 transitions, 1030 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) [2024-06-28 03:11:07,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:07,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:07,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:07,406 INFO L124 PetriNetUnfolderBase]: 293/537 cut-off events. [2024-06-28 03:11:07,407 INFO L125 PetriNetUnfolderBase]: For 11901/11901 co-relation queries the response was YES. [2024-06-28 03:11:07,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 537 events. 293/537 cut-off events. For 11901/11901 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2268 event pairs, 43 based on Foata normal form. 2/538 useless extension candidates. Maximal degree in co-relation 2967. Up to 272 conditions per place. [2024-06-28 03:11:07,410 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 73 selfloop transitions, 55 changer transitions 2/132 dead transitions. [2024-06-28 03:11:07,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 132 transitions, 1427 flow [2024-06-28 03:11:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:11:07,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 03:11:07,411 INFO L175 Difference]: Start difference. First operand has 129 places, 107 transitions, 1030 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:11:07,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 132 transitions, 1427 flow [2024-06-28 03:11:07,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 132 transitions, 1310 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:07,432 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 1037 flow [2024-06-28 03:11:07,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1037, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2024-06-28 03:11:07,432 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-28 03:11:07,433 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 1037 flow [2024-06-28 03:11:07,433 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) [2024-06-28 03:11:07,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:07,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:07,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:11:07,433 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)] === [2024-06-28 03:11:07,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1292169680, now seen corresponding path program 2 times [2024-06-28 03:11:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154451552] [2024-06-28 03:11:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:07,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:08,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:08,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154451552] [2024-06-28 03:11:08,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154451552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:08,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:08,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:08,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705101939] [2024-06-28 03:11:08,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:08,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:08,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:08,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:08,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 1037 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) [2024-06-28 03:11:08,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:08,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:08,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:08,427 INFO L124 PetriNetUnfolderBase]: 302/552 cut-off events. [2024-06-28 03:11:08,427 INFO L125 PetriNetUnfolderBase]: For 12833/12833 co-relation queries the response was YES. [2024-06-28 03:11:08,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3124 conditions, 552 events. 302/552 cut-off events. For 12833/12833 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2352 event pairs, 46 based on Foata normal form. 2/553 useless extension candidates. Maximal degree in co-relation 3061. Up to 413 conditions per place. [2024-06-28 03:11:08,430 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 89 selfloop transitions, 36 changer transitions 0/127 dead transitions. [2024-06-28 03:11:08,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 127 transitions, 1368 flow [2024-06-28 03:11:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 03:11:08,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-28 03:11:08,461 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 1037 flow. Second operand 10 states and 118 transitions. [2024-06-28 03:11:08,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 127 transitions, 1368 flow [2024-06-28 03:11:08,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 127 transitions, 1253 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:08,485 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 1055 flow [2024-06-28 03:11:08,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1055, PETRI_PLACES=133, PETRI_TRANSITIONS=112} [2024-06-28 03:11:08,485 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-28 03:11:08,486 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 1055 flow [2024-06-28 03:11:08,486 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) [2024-06-28 03:11:08,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:08,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:08,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:11:08,487 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)] === [2024-06-28 03:11:08,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1292025530, now seen corresponding path program 3 times [2024-06-28 03:11:08,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:08,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348530448] [2024-06-28 03:11:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:08,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:09,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348530448] [2024-06-28 03:11:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348530448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:09,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859188555] [2024-06-28 03:11:09,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:09,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:09,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:09,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:09,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:09,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 112 transitions, 1055 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) [2024-06-28 03:11:09,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:09,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:09,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:09,382 INFO L124 PetriNetUnfolderBase]: 308/562 cut-off events. [2024-06-28 03:11:09,382 INFO L125 PetriNetUnfolderBase]: For 13492/13492 co-relation queries the response was YES. [2024-06-28 03:11:09,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3159 conditions, 562 events. 308/562 cut-off events. For 13492/13492 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2397 event pairs, 43 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 3094. Up to 389 conditions per place. [2024-06-28 03:11:09,386 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 85 selfloop transitions, 43 changer transitions 0/130 dead transitions. [2024-06-28 03:11:09,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 130 transitions, 1373 flow [2024-06-28 03:11:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 03:11:09,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 03:11:09,388 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 1055 flow. Second operand 9 states and 115 transitions. [2024-06-28 03:11:09,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 130 transitions, 1373 flow [2024-06-28 03:11:09,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1285 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:09,412 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 1086 flow [2024-06-28 03:11:09,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1086, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-06-28 03:11:09,412 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2024-06-28 03:11:09,412 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 1086 flow [2024-06-28 03:11:09,412 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) [2024-06-28 03:11:09,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:09,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:09,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:11:09,413 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)] === [2024-06-28 03:11:09,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:09,413 INFO L85 PathProgramCache]: Analyzing trace with hash 571080629, now seen corresponding path program 4 times [2024-06-28 03:11:09,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:09,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942011542] [2024-06-28 03:11:09,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:09,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:10,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:10,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942011542] [2024-06-28 03:11:10,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942011542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:10,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:10,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:10,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322051733] [2024-06-28 03:11:10,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:10,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:10,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:10,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:10,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:10,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:10,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 1086 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) [2024-06-28 03:11:10,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:10,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:10,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:10,382 INFO L124 PetriNetUnfolderBase]: 348/642 cut-off events. [2024-06-28 03:11:10,382 INFO L125 PetriNetUnfolderBase]: For 21330/21330 co-relation queries the response was YES. [2024-06-28 03:11:10,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 642 events. 348/642 cut-off events. For 21330/21330 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2852 event pairs, 41 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 3765. Up to 317 conditions per place. [2024-06-28 03:11:10,386 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 89 selfloop transitions, 53 changer transitions 0/144 dead transitions. [2024-06-28 03:11:10,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 144 transitions, 1609 flow [2024-06-28 03:11:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-28 03:11:10,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703703703703704 [2024-06-28 03:11:10,400 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 1086 flow. Second operand 9 states and 127 transitions. [2024-06-28 03:11:10,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 144 transitions, 1609 flow [2024-06-28 03:11:10,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 144 transitions, 1492 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:10,437 INFO L231 Difference]: Finished difference. Result has 134 places, 115 transitions, 1088 flow [2024-06-28 03:11:10,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1088, PETRI_PLACES=134, PETRI_TRANSITIONS=115} [2024-06-28 03:11:10,437 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2024-06-28 03:11:10,442 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 115 transitions, 1088 flow [2024-06-28 03:11:10,442 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) [2024-06-28 03:11:10,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:10,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:10,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:11:10,442 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)] === [2024-06-28 03:11:10,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:10,443 INFO L85 PathProgramCache]: Analyzing trace with hash 571084504, now seen corresponding path program 4 times [2024-06-28 03:11:10,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:10,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143232090] [2024-06-28 03:11:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:11,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:11,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143232090] [2024-06-28 03:11:11,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143232090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:11,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:11,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513853584] [2024-06-28 03:11:11,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:11,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:11,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:11,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:11,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 115 transitions, 1088 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) [2024-06-28 03:11:11,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:11,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:11,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:11,610 INFO L124 PetriNetUnfolderBase]: 364/668 cut-off events. [2024-06-28 03:11:11,610 INFO L125 PetriNetUnfolderBase]: For 24004/24004 co-relation queries the response was YES. [2024-06-28 03:11:11,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 668 events. 364/668 cut-off events. For 24004/24004 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3001 event pairs, 66 based on Foata normal form. 2/669 useless extension candidates. Maximal degree in co-relation 4013. Up to 466 conditions per place. [2024-06-28 03:11:11,615 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 90 selfloop transitions, 53 changer transitions 0/145 dead transitions. [2024-06-28 03:11:11,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 145 transitions, 1568 flow [2024-06-28 03:11:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:11:11,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-28 03:11:11,627 INFO L175 Difference]: Start difference. First operand has 134 places, 115 transitions, 1088 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:11:11,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 145 transitions, 1568 flow [2024-06-28 03:11:11,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 145 transitions, 1474 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:11,662 INFO L231 Difference]: Finished difference. Result has 139 places, 119 transitions, 1165 flow [2024-06-28 03:11:11,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1165, PETRI_PLACES=139, PETRI_TRANSITIONS=119} [2024-06-28 03:11:11,663 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-06-28 03:11:11,663 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 119 transitions, 1165 flow [2024-06-28 03:11:11,663 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) [2024-06-28 03:11:11,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:11,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:11,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:11:11,663 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)] === [2024-06-28 03:11:11,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:11,663 INFO L85 PathProgramCache]: Analyzing trace with hash 571084349, now seen corresponding path program 5 times [2024-06-28 03:11:11,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:11,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444061456] [2024-06-28 03:11:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:11,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:12,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444061456] [2024-06-28 03:11:12,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444061456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:12,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:12,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:12,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321727803] [2024-06-28 03:11:12,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:12,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:12,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:12,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:12,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:12,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:12,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 119 transitions, 1165 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) [2024-06-28 03:11:12,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:12,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:12,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:12,635 INFO L124 PetriNetUnfolderBase]: 388/720 cut-off events. [2024-06-28 03:11:12,636 INFO L125 PetriNetUnfolderBase]: For 33544/33544 co-relation queries the response was YES. [2024-06-28 03:11:12,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4306 conditions, 720 events. 388/720 cut-off events. For 33544/33544 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3347 event pairs, 62 based on Foata normal form. 14/733 useless extension candidates. Maximal degree in co-relation 4241. Up to 479 conditions per place. [2024-06-28 03:11:12,640 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 88 selfloop transitions, 48 changer transitions 12/150 dead transitions. [2024-06-28 03:11:12,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 150 transitions, 1637 flow [2024-06-28 03:11:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:12,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:12,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 03:11:12,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-28 03:11:12,641 INFO L175 Difference]: Start difference. First operand has 139 places, 119 transitions, 1165 flow. Second operand 10 states and 138 transitions. [2024-06-28 03:11:12,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 150 transitions, 1637 flow [2024-06-28 03:11:12,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 150 transitions, 1516 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:12,678 INFO L231 Difference]: Finished difference. Result has 140 places, 115 transitions, 1114 flow [2024-06-28 03:11:12,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1114, PETRI_PLACES=140, PETRI_TRANSITIONS=115} [2024-06-28 03:11:12,679 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-06-28 03:11:12,679 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 115 transitions, 1114 flow [2024-06-28 03:11:12,679 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) [2024-06-28 03:11:12,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:12,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:12,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:11:12,679 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)] === [2024-06-28 03:11:12,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash 576798424, now seen corresponding path program 5 times [2024-06-28 03:11:12,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:12,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778734315] [2024-06-28 03:11:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:12,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:13,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:13,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778734315] [2024-06-28 03:11:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778734315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:13,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:13,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:13,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338740578] [2024-06-28 03:11:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:13,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:13,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:13,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:13,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:13,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 115 transitions, 1114 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:13,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:13,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:13,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:13,965 INFO L124 PetriNetUnfolderBase]: 366/674 cut-off events. [2024-06-28 03:11:13,966 INFO L125 PetriNetUnfolderBase]: For 26786/26786 co-relation queries the response was YES. [2024-06-28 03:11:13,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4246 conditions, 674 events. 366/674 cut-off events. For 26786/26786 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3049 event pairs, 70 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 4181. Up to 538 conditions per place. [2024-06-28 03:11:13,970 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 35 changer transitions 0/138 dead transitions. [2024-06-28 03:11:13,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 138 transitions, 1489 flow [2024-06-28 03:11:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:11:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:11:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 03:11:13,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 03:11:13,972 INFO L175 Difference]: Start difference. First operand has 140 places, 115 transitions, 1114 flow. Second operand 12 states and 138 transitions. [2024-06-28 03:11:13,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 138 transitions, 1489 flow [2024-06-28 03:11:14,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 1333 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:14,008 INFO L231 Difference]: Finished difference. Result has 141 places, 119 transitions, 1096 flow [2024-06-28 03:11:14,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1096, PETRI_PLACES=141, PETRI_TRANSITIONS=119} [2024-06-28 03:11:14,010 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2024-06-28 03:11:14,010 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 119 transitions, 1096 flow [2024-06-28 03:11:14,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:14,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:14,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:14,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:11:14,010 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)] === [2024-06-28 03:11:14,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1062291190, now seen corresponding path program 6 times [2024-06-28 03:11:14,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:14,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346545436] [2024-06-28 03:11:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:14,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:14,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:14,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346545436] [2024-06-28 03:11:14,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346545436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:14,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:14,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:14,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907343869] [2024-06-28 03:11:14,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:14,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:14,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:14,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:14,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:14,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:14,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 119 transitions, 1096 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:14,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:14,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:14,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:15,293 INFO L124 PetriNetUnfolderBase]: 419/769 cut-off events. [2024-06-28 03:11:15,294 INFO L125 PetriNetUnfolderBase]: For 28275/28275 co-relation queries the response was YES. [2024-06-28 03:11:15,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 769 events. 419/769 cut-off events. For 28275/28275 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3584 event pairs, 89 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 4656. Up to 639 conditions per place. [2024-06-28 03:11:15,298 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 119 selfloop transitions, 35 changer transitions 0/156 dead transitions. [2024-06-28 03:11:15,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 156 transitions, 1677 flow [2024-06-28 03:11:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:11:15,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 03:11:15,299 INFO L175 Difference]: Start difference. First operand has 141 places, 119 transitions, 1096 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:11:15,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 156 transitions, 1677 flow [2024-06-28 03:11:15,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 156 transitions, 1545 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:15,342 INFO L231 Difference]: Finished difference. Result has 147 places, 138 transitions, 1333 flow [2024-06-28 03:11:15,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1333, PETRI_PLACES=147, PETRI_TRANSITIONS=138} [2024-06-28 03:11:15,344 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-28 03:11:15,344 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 138 transitions, 1333 flow [2024-06-28 03:11:15,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:15,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:15,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:15,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:11:15,344 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)] === [2024-06-28 03:11:15,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:15,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1062285610, now seen corresponding path program 7 times [2024-06-28 03:11:15,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:15,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086532541] [2024-06-28 03:11:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:15,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:16,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:16,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086532541] [2024-06-28 03:11:16,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086532541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:16,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:16,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:16,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125810401] [2024-06-28 03:11:16,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:16,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:16,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:16,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:16,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:16,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:16,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 138 transitions, 1333 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:16,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:16,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:16,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:16,728 INFO L124 PetriNetUnfolderBase]: 435/795 cut-off events. [2024-06-28 03:11:16,729 INFO L125 PetriNetUnfolderBase]: For 31737/31737 co-relation queries the response was YES. [2024-06-28 03:11:16,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5057 conditions, 795 events. 435/795 cut-off events. For 31737/31737 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3716 event pairs, 74 based on Foata normal form. 2/796 useless extension candidates. Maximal degree in co-relation 4987. Up to 569 conditions per place. [2024-06-28 03:11:16,733 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 59 changer transitions 0/162 dead transitions. [2024-06-28 03:11:16,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 162 transitions, 1851 flow [2024-06-28 03:11:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:11:16,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-28 03:11:16,757 INFO L175 Difference]: Start difference. First operand has 147 places, 138 transitions, 1333 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:11:16,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 162 transitions, 1851 flow [2024-06-28 03:11:16,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 162 transitions, 1801 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:16,807 INFO L231 Difference]: Finished difference. Result has 155 places, 142 transitions, 1500 flow [2024-06-28 03:11:16,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1500, PETRI_PLACES=155, PETRI_TRANSITIONS=142} [2024-06-28 03:11:16,808 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-28 03:11:16,808 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 142 transitions, 1500 flow [2024-06-28 03:11:16,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:16,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:16,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:16,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:11:16,809 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)] === [2024-06-28 03:11:16,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:16,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1062285455, now seen corresponding path program 6 times [2024-06-28 03:11:16,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:16,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986991740] [2024-06-28 03:11:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:16,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:17,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:17,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986991740] [2024-06-28 03:11:17,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986991740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:17,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:17,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585259131] [2024-06-28 03:11:17,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:17,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:17,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:17,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:17,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:17,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:17,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 142 transitions, 1500 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:17,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:17,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:17,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:18,014 INFO L124 PetriNetUnfolderBase]: 455/841 cut-off events. [2024-06-28 03:11:18,014 INFO L125 PetriNetUnfolderBase]: For 43072/43072 co-relation queries the response was YES. [2024-06-28 03:11:18,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5242 conditions, 841 events. 455/841 cut-off events. For 43072/43072 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4038 event pairs, 83 based on Foata normal form. 16/856 useless extension candidates. Maximal degree in co-relation 5170. Up to 548 conditions per place. [2024-06-28 03:11:18,019 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 98 selfloop transitions, 40 changer transitions 25/165 dead transitions. [2024-06-28 03:11:18,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 165 transitions, 1906 flow [2024-06-28 03:11:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 03:11:18,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-28 03:11:18,033 INFO L175 Difference]: Start difference. First operand has 155 places, 142 transitions, 1500 flow. Second operand 10 states and 128 transitions. [2024-06-28 03:11:18,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 165 transitions, 1906 flow [2024-06-28 03:11:18,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 165 transitions, 1773 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:18,086 INFO L231 Difference]: Finished difference. Result has 158 places, 125 transitions, 1257 flow [2024-06-28 03:11:18,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1257, PETRI_PLACES=158, PETRI_TRANSITIONS=125} [2024-06-28 03:11:18,088 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2024-06-28 03:11:18,088 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 125 transitions, 1257 flow [2024-06-28 03:11:18,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:18,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:18,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:18,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:11:18,089 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)] === [2024-06-28 03:11:18,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1234806173, now seen corresponding path program 7 times [2024-06-28 03:11:18,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:18,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200201384] [2024-06-28 03:11:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:18,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:18,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:18,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200201384] [2024-06-28 03:11:18,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200201384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:18,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:18,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466880576] [2024-06-28 03:11:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:18,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:18,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 125 transitions, 1257 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:18,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:18,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:18,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:19,170 INFO L124 PetriNetUnfolderBase]: 411/777 cut-off events. [2024-06-28 03:11:19,171 INFO L125 PetriNetUnfolderBase]: For 46425/46425 co-relation queries the response was YES. [2024-06-28 03:11:19,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 777 events. 411/777 cut-off events. For 46425/46425 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3733 event pairs, 92 based on Foata normal form. 16/792 useless extension candidates. Maximal degree in co-relation 4803. Up to 670 conditions per place. [2024-06-28 03:11:19,198 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 116 selfloop transitions, 15 changer transitions 13/146 dead transitions. [2024-06-28 03:11:19,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 146 transitions, 1659 flow [2024-06-28 03:11:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:11:19,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-28 03:11:19,199 INFO L175 Difference]: Start difference. First operand has 158 places, 125 transitions, 1257 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:11:19,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 146 transitions, 1659 flow [2024-06-28 03:11:19,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 146 transitions, 1553 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 03:11:19,246 INFO L231 Difference]: Finished difference. Result has 153 places, 122 transitions, 1178 flow [2024-06-28 03:11:19,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1178, PETRI_PLACES=153, PETRI_TRANSITIONS=122} [2024-06-28 03:11:19,246 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-06-28 03:11:19,246 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 122 transitions, 1178 flow [2024-06-28 03:11:19,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:19,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:19,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:19,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:11:19,247 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)] === [2024-06-28 03:11:19,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1756864924, now seen corresponding path program 8 times [2024-06-28 03:11:19,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:19,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027508907] [2024-06-28 03:11:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:19,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:20,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:20,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027508907] [2024-06-28 03:11:20,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027508907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:20,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:20,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:20,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028474495] [2024-06-28 03:11:20,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:20,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:20,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:20,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:20,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:20,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:20,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 122 transitions, 1178 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:20,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:20,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:20,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:20,472 INFO L124 PetriNetUnfolderBase]: 379/717 cut-off events. [2024-06-28 03:11:20,473 INFO L125 PetriNetUnfolderBase]: For 33913/33913 co-relation queries the response was YES. [2024-06-28 03:11:20,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 717 events. 379/717 cut-off events. For 33913/33913 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3370 event pairs, 88 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 4489. Up to 680 conditions per place. [2024-06-28 03:11:20,477 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 117 selfloop transitions, 16 changer transitions 0/135 dead transitions. [2024-06-28 03:11:20,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 135 transitions, 1504 flow [2024-06-28 03:11:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:11:20,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:11:20,497 INFO L175 Difference]: Start difference. First operand has 153 places, 122 transitions, 1178 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:11:20,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 135 transitions, 1504 flow [2024-06-28 03:11:20,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 135 transitions, 1448 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-28 03:11:20,544 INFO L231 Difference]: Finished difference. Result has 151 places, 124 transitions, 1199 flow [2024-06-28 03:11:20,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1199, PETRI_PLACES=151, PETRI_TRANSITIONS=124} [2024-06-28 03:11:20,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-28 03:11:20,545 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 124 transitions, 1199 flow [2024-06-28 03:11:20,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:20,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:20,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:20,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:11:20,546 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)] === [2024-06-28 03:11:20,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:20,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1012888104, now seen corresponding path program 1 times [2024-06-28 03:11:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:20,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956564273] [2024-06-28 03:11:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:21,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:21,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956564273] [2024-06-28 03:11:21,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956564273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:21,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:21,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:21,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170942312] [2024-06-28 03:11:21,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:21,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:21,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:21,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:21,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 124 transitions, 1199 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:21,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:21,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:21,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:21,682 INFO L124 PetriNetUnfolderBase]: 386/730 cut-off events. [2024-06-28 03:11:21,682 INFO L125 PetriNetUnfolderBase]: For 32592/32592 co-relation queries the response was YES. [2024-06-28 03:11:21,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4548 conditions, 730 events. 386/730 cut-off events. For 32592/32592 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3448 event pairs, 81 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 4487. Up to 678 conditions per place. [2024-06-28 03:11:21,686 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 118 selfloop transitions, 20 changer transitions 0/140 dead transitions. [2024-06-28 03:11:21,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 140 transitions, 1532 flow [2024-06-28 03:11:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:11:21,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-28 03:11:21,714 INFO L175 Difference]: Start difference. First operand has 151 places, 124 transitions, 1199 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:11:21,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 140 transitions, 1532 flow [2024-06-28 03:11:21,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 140 transitions, 1479 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:21,766 INFO L231 Difference]: Finished difference. Result has 154 places, 129 transitions, 1247 flow [2024-06-28 03:11:21,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1247, PETRI_PLACES=154, PETRI_TRANSITIONS=129} [2024-06-28 03:11:21,768 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-28 03:11:21,768 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 129 transitions, 1247 flow [2024-06-28 03:11:21,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:21,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:21,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:21,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:11:21,769 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:21,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1012896040, now seen corresponding path program 9 times [2024-06-28 03:11:21,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:21,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579443639] [2024-06-28 03:11:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:21,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:22,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:22,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579443639] [2024-06-28 03:11:22,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579443639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:22,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:22,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:22,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493117677] [2024-06-28 03:11:22,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:22,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:22,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:22,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:22,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:22,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 129 transitions, 1247 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:22,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:22,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:22,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:23,176 INFO L124 PetriNetUnfolderBase]: 398/750 cut-off events. [2024-06-28 03:11:23,176 INFO L125 PetriNetUnfolderBase]: For 34440/34440 co-relation queries the response was YES. [2024-06-28 03:11:23,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4796 conditions, 750 events. 398/750 cut-off events. For 34440/34440 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3580 event pairs, 77 based on Foata normal form. 2/751 useless extension candidates. Maximal degree in co-relation 4732. Up to 688 conditions per place. [2024-06-28 03:11:23,182 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 123 selfloop transitions, 24 changer transitions 0/149 dead transitions. [2024-06-28 03:11:23,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 1646 flow [2024-06-28 03:11:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:11:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:11:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:11:23,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 03:11:23,184 INFO L175 Difference]: Start difference. First operand has 154 places, 129 transitions, 1247 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:11:23,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 1646 flow [2024-06-28 03:11:23,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 149 transitions, 1604 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:23,237 INFO L231 Difference]: Finished difference. Result has 160 places, 133 transitions, 1323 flow [2024-06-28 03:11:23,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1323, PETRI_PLACES=160, PETRI_TRANSITIONS=133} [2024-06-28 03:11:23,238 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-28 03:11:23,238 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 133 transitions, 1323 flow [2024-06-28 03:11:23,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:23,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:23,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:23,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:11:23,238 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:23,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:23,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2013580760, now seen corresponding path program 2 times [2024-06-28 03:11:23,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:23,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687072093] [2024-06-28 03:11:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:23,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:24,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687072093] [2024-06-28 03:11:24,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687072093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:24,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:24,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:24,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18447246] [2024-06-28 03:11:24,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:24,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:24,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:24,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 133 transitions, 1323 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:24,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:24,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:24,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:24,398 INFO L124 PetriNetUnfolderBase]: 402/758 cut-off events. [2024-06-28 03:11:24,398 INFO L125 PetriNetUnfolderBase]: For 35644/35644 co-relation queries the response was YES. [2024-06-28 03:11:24,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 758 events. 402/758 cut-off events. For 35644/35644 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3620 event pairs, 88 based on Foata normal form. 2/759 useless extension candidates. Maximal degree in co-relation 4813. Up to 719 conditions per place. [2024-06-28 03:11:24,402 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 125 selfloop transitions, 17 changer transitions 0/144 dead transitions. [2024-06-28 03:11:24,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 144 transitions, 1647 flow [2024-06-28 03:11:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:11:24,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:11:24,403 INFO L175 Difference]: Start difference. First operand has 160 places, 133 transitions, 1323 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:11:24,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 144 transitions, 1647 flow [2024-06-28 03:11:24,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 144 transitions, 1558 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:24,483 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 1291 flow [2024-06-28 03:11:24,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1291, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2024-06-28 03:11:24,484 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 03:11:24,484 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 1291 flow [2024-06-28 03:11:24,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:24,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:24,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:24,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:11:24,484 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:24,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1013103585, now seen corresponding path program 8 times [2024-06-28 03:11:24,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:24,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629583246] [2024-06-28 03:11:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:24,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:25,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:25,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629583246] [2024-06-28 03:11:25,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629583246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:25,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:25,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:25,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043416616] [2024-06-28 03:11:25,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:25,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:25,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:25,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:25,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 1291 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:25,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:25,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:25,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:25,630 INFO L124 PetriNetUnfolderBase]: 379/719 cut-off events. [2024-06-28 03:11:25,631 INFO L125 PetriNetUnfolderBase]: For 35550/35550 co-relation queries the response was YES. [2024-06-28 03:11:25,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 719 events. 379/719 cut-off events. For 35550/35550 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3435 event pairs, 56 based on Foata normal form. 16/734 useless extension candidates. Maximal degree in co-relation 3907. Up to 580 conditions per place. [2024-06-28 03:11:25,635 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 116 selfloop transitions, 18 changer transitions 17/153 dead transitions. [2024-06-28 03:11:25,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 153 transitions, 1661 flow [2024-06-28 03:11:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:11:25,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:11:25,637 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 1291 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:11:25,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 153 transitions, 1661 flow [2024-06-28 03:11:25,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 1606 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:25,690 INFO L231 Difference]: Finished difference. Result has 163 places, 124 transitions, 1166 flow [2024-06-28 03:11:25,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1166, PETRI_PLACES=163, PETRI_TRANSITIONS=124} [2024-06-28 03:11:25,691 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-28 03:11:25,691 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 124 transitions, 1166 flow [2024-06-28 03:11:25,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:25,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:25,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:25,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:11:25,692 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:25,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:25,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1757080250, now seen corresponding path program 3 times [2024-06-28 03:11:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:25,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644251905] [2024-06-28 03:11:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:25,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:26,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644251905] [2024-06-28 03:11:26,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644251905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:26,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:26,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:26,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401100975] [2024-06-28 03:11:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:26,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:26,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:26,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:26,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:26,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:26,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 124 transitions, 1166 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:26,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:26,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:26,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:26,873 INFO L124 PetriNetUnfolderBase]: 333/637 cut-off events. [2024-06-28 03:11:26,873 INFO L125 PetriNetUnfolderBase]: For 23057/23057 co-relation queries the response was YES. [2024-06-28 03:11:26,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 637 events. 333/637 cut-off events. For 23057/23057 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2963 event pairs, 59 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 3549. Up to 606 conditions per place. [2024-06-28 03:11:26,877 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 120 selfloop transitions, 13 changer transitions 0/135 dead transitions. [2024-06-28 03:11:26,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 135 transitions, 1474 flow [2024-06-28 03:11:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:11:26,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:11:26,878 INFO L175 Difference]: Start difference. First operand has 163 places, 124 transitions, 1166 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:11:26,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 135 transitions, 1474 flow [2024-06-28 03:11:26,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 135 transitions, 1385 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 03:11:26,922 INFO L231 Difference]: Finished difference. Result has 155 places, 125 transitions, 1127 flow [2024-06-28 03:11:26,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1127, PETRI_PLACES=155, PETRI_TRANSITIONS=125} [2024-06-28 03:11:26,923 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-28 03:11:26,923 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 125 transitions, 1127 flow [2024-06-28 03:11:26,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:26,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:26,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:26,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:11:26,923 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:26,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:26,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2013572824, now seen corresponding path program 10 times [2024-06-28 03:11:26,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:26,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845314133] [2024-06-28 03:11:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:26,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:27,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:27,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845314133] [2024-06-28 03:11:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845314133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:27,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:27,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:27,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339755361] [2024-06-28 03:11:27,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:27,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:27,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:27,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:27,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:27,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:27,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 125 transitions, 1127 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:27,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:27,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:27,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:28,025 INFO L124 PetriNetUnfolderBase]: 329/631 cut-off events. [2024-06-28 03:11:28,025 INFO L125 PetriNetUnfolderBase]: For 19997/19997 co-relation queries the response was YES. [2024-06-28 03:11:28,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 631 events. 329/631 cut-off events. For 19997/19997 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2946 event pairs, 54 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 3320. Up to 582 conditions per place. [2024-06-28 03:11:28,029 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 115 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-06-28 03:11:28,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 137 transitions, 1429 flow [2024-06-28 03:11:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:11:28,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-28 03:11:28,049 INFO L175 Difference]: Start difference. First operand has 155 places, 125 transitions, 1127 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:11:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 137 transitions, 1429 flow [2024-06-28 03:11:28,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 137 transitions, 1388 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:28,090 INFO L231 Difference]: Finished difference. Result has 158 places, 125 transitions, 1131 flow [2024-06-28 03:11:28,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1131, PETRI_PLACES=158, PETRI_TRANSITIONS=125} [2024-06-28 03:11:28,091 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2024-06-28 03:11:28,092 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 125 transitions, 1131 flow [2024-06-28 03:11:28,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:28,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:28,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:28,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:11:28,092 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:28,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:28,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1013103430, now seen corresponding path program 11 times [2024-06-28 03:11:28,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:28,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086234356] [2024-06-28 03:11:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:28,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:28,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086234356] [2024-06-28 03:11:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086234356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:28,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:28,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:28,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467158420] [2024-06-28 03:11:28,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:28,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:28,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:28,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:28,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:28,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:28,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 125 transitions, 1131 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:28,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:28,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:28,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:29,127 INFO L124 PetriNetUnfolderBase]: 325/625 cut-off events. [2024-06-28 03:11:29,128 INFO L125 PetriNetUnfolderBase]: For 18518/18518 co-relation queries the response was YES. [2024-06-28 03:11:29,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3261 conditions, 625 events. 325/625 cut-off events. For 18518/18518 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2914 event pairs, 53 based on Foata normal form. 2/626 useless extension candidates. Maximal degree in co-relation 3197. Up to 561 conditions per place. [2024-06-28 03:11:29,133 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 109 selfloop transitions, 26 changer transitions 0/137 dead transitions. [2024-06-28 03:11:29,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 137 transitions, 1433 flow [2024-06-28 03:11:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:11:29,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-28 03:11:29,134 INFO L175 Difference]: Start difference. First operand has 158 places, 125 transitions, 1131 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:11:29,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 137 transitions, 1433 flow [2024-06-28 03:11:29,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 137 transitions, 1298 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:29,176 INFO L231 Difference]: Finished difference. Result has 159 places, 125 transitions, 1053 flow [2024-06-28 03:11:29,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1053, PETRI_PLACES=159, PETRI_TRANSITIONS=125} [2024-06-28 03:11:29,176 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 03:11:29,177 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 125 transitions, 1053 flow [2024-06-28 03:11:29,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:29,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:29,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:29,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:11:29,177 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:29,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2023103960, now seen corresponding path program 4 times [2024-06-28 03:11:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:29,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145336176] [2024-06-28 03:11:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:29,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:29,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145336176] [2024-06-28 03:11:29,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145336176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:29,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:29,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:29,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993102345] [2024-06-28 03:11:29,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:29,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:29,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:29,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:29,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:30,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:30,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 125 transitions, 1053 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:30,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:30,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:30,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:30,283 INFO L124 PetriNetUnfolderBase]: 322/620 cut-off events. [2024-06-28 03:11:30,283 INFO L125 PetriNetUnfolderBase]: For 16715/16715 co-relation queries the response was YES. [2024-06-28 03:11:30,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 620 events. 322/620 cut-off events. For 16715/16715 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2889 event pairs, 50 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 2955. Up to 584 conditions per place. [2024-06-28 03:11:30,286 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 119 selfloop transitions, 14 changer transitions 0/135 dead transitions. [2024-06-28 03:11:30,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 135 transitions, 1341 flow [2024-06-28 03:11:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:11:30,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:11:30,297 INFO L175 Difference]: Start difference. First operand has 159 places, 125 transitions, 1053 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:11:30,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 135 transitions, 1341 flow [2024-06-28 03:11:30,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 135 transitions, 1237 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 03:11:30,332 INFO L231 Difference]: Finished difference. Result has 157 places, 125 transitions, 981 flow [2024-06-28 03:11:30,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=981, PETRI_PLACES=157, PETRI_TRANSITIONS=125} [2024-06-28 03:11:30,333 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2024-06-28 03:11:30,333 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 125 transitions, 981 flow [2024-06-28 03:11:30,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:30,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:30,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:30,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:11:30,333 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:30,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1347571904, now seen corresponding path program 1 times [2024-06-28 03:11:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:30,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790495256] [2024-06-28 03:11:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:30,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:30,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:30,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790495256] [2024-06-28 03:11:30,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790495256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:30,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:30,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:30,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279976616] [2024-06-28 03:11:30,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:30,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:30,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:31,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:31,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 125 transitions, 981 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) [2024-06-28 03:11:31,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:31,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:31,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:31,449 INFO L124 PetriNetUnfolderBase]: 349/681 cut-off events. [2024-06-28 03:11:31,449 INFO L125 PetriNetUnfolderBase]: For 31549/31549 co-relation queries the response was YES. [2024-06-28 03:11:31,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 681 events. 349/681 cut-off events. For 31549/31549 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3243 event pairs, 67 based on Foata normal form. 8/688 useless extension candidates. Maximal degree in co-relation 3307. Up to 225 conditions per place. [2024-06-28 03:11:31,453 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 80 selfloop transitions, 55 changer transitions 15/152 dead transitions. [2024-06-28 03:11:31,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 152 transitions, 1463 flow [2024-06-28 03:11:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 03:11:31,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-06-28 03:11:31,454 INFO L175 Difference]: Start difference. First operand has 157 places, 125 transitions, 981 flow. Second operand 10 states and 127 transitions. [2024-06-28 03:11:31,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 152 transitions, 1463 flow [2024-06-28 03:11:31,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 152 transitions, 1396 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:31,503 INFO L231 Difference]: Finished difference. Result has 158 places, 122 transitions, 1009 flow [2024-06-28 03:11:31,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1009, PETRI_PLACES=158, PETRI_TRANSITIONS=122} [2024-06-28 03:11:31,504 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2024-06-28 03:11:31,504 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 122 transitions, 1009 flow [2024-06-28 03:11:31,509 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) [2024-06-28 03:11:31,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:31,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:31,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:11:31,510 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:31,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1289364134, now seen corresponding path program 2 times [2024-06-28 03:11:31,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:31,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177579448] [2024-06-28 03:11:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:31,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:32,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:32,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177579448] [2024-06-28 03:11:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177579448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:32,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:32,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:32,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813354791] [2024-06-28 03:11:32,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:32,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:32,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:32,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 122 transitions, 1009 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) [2024-06-28 03:11:32,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:32,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:32,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:32,532 INFO L124 PetriNetUnfolderBase]: 370/728 cut-off events. [2024-06-28 03:11:32,532 INFO L125 PetriNetUnfolderBase]: For 45213/45213 co-relation queries the response was YES. [2024-06-28 03:11:32,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4050 conditions, 728 events. 370/728 cut-off events. For 45213/45213 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3571 event pairs, 80 based on Foata normal form. 8/735 useless extension candidates. Maximal degree in co-relation 3987. Up to 360 conditions per place. [2024-06-28 03:11:32,537 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 83 selfloop transitions, 56 changer transitions 10/151 dead transitions. [2024-06-28 03:11:32,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 151 transitions, 1512 flow [2024-06-28 03:11:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:11:32,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-28 03:11:32,538 INFO L175 Difference]: Start difference. First operand has 158 places, 122 transitions, 1009 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:11:32,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 151 transitions, 1512 flow [2024-06-28 03:11:32,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 151 transitions, 1416 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:32,616 INFO L231 Difference]: Finished difference. Result has 156 places, 121 transitions, 1028 flow [2024-06-28 03:11:32,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1028, PETRI_PLACES=156, PETRI_TRANSITIONS=121} [2024-06-28 03:11:32,617 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2024-06-28 03:11:32,617 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 121 transitions, 1028 flow [2024-06-28 03:11:32,617 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) [2024-06-28 03:11:32,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:32,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:32,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:11:32,618 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:32,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1289359484, now seen corresponding path program 3 times [2024-06-28 03:11:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:32,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481265408] [2024-06-28 03:11:32,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:32,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481265408] [2024-06-28 03:11:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481265408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:33,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759279151] [2024-06-28 03:11:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:33,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:33,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:33,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:33,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 121 transitions, 1028 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) [2024-06-28 03:11:33,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:33,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:33,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:33,866 INFO L124 PetriNetUnfolderBase]: 355/703 cut-off events. [2024-06-28 03:11:33,867 INFO L125 PetriNetUnfolderBase]: For 44098/44098 co-relation queries the response was YES. [2024-06-28 03:11:33,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 703 events. 355/703 cut-off events. For 44098/44098 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3460 event pairs, 65 based on Foata normal form. 20/722 useless extension candidates. Maximal degree in co-relation 3458. Up to 365 conditions per place. [2024-06-28 03:11:33,870 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 73 selfloop transitions, 54 changer transitions 20/149 dead transitions. [2024-06-28 03:11:33,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 149 transitions, 1416 flow [2024-06-28 03:11:33,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:11:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:11:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-28 03:11:33,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-06-28 03:11:33,871 INFO L175 Difference]: Start difference. First operand has 156 places, 121 transitions, 1028 flow. Second operand 13 states and 155 transitions. [2024-06-28 03:11:33,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 149 transitions, 1416 flow [2024-06-28 03:11:33,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 149 transitions, 1300 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:33,925 INFO L231 Difference]: Finished difference. Result has 159 places, 111 transitions, 965 flow [2024-06-28 03:11:33,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=965, PETRI_PLACES=159, PETRI_TRANSITIONS=111} [2024-06-28 03:11:33,926 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 03:11:33,926 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 111 transitions, 965 flow [2024-06-28 03:11:33,926 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) [2024-06-28 03:11:33,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:33,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:33,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:11:33,926 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:33,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:33,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1289479454, now seen corresponding path program 4 times [2024-06-28 03:11:33,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:33,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629502809] [2024-06-28 03:11:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:33,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:34,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:34,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629502809] [2024-06-28 03:11:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629502809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:34,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354477399] [2024-06-28 03:11:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:34,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:34,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:34,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:34,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 111 transitions, 965 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) [2024-06-28 03:11:34,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:34,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:34,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:34,955 INFO L124 PetriNetUnfolderBase]: 302/604 cut-off events. [2024-06-28 03:11:34,955 INFO L125 PetriNetUnfolderBase]: For 30066/30066 co-relation queries the response was YES. [2024-06-28 03:11:34,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3197 conditions, 604 events. 302/604 cut-off events. For 30066/30066 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2865 event pairs, 63 based on Foata normal form. 8/611 useless extension candidates. Maximal degree in co-relation 3136. Up to 314 conditions per place. [2024-06-28 03:11:34,958 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 47 changer transitions 20/135 dead transitions. [2024-06-28 03:11:34,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 135 transitions, 1308 flow [2024-06-28 03:11:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:11:34,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 03:11:34,959 INFO L175 Difference]: Start difference. First operand has 159 places, 111 transitions, 965 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:11:34,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 135 transitions, 1308 flow [2024-06-28 03:11:35,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 135 transitions, 1197 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 03:11:35,006 INFO L231 Difference]: Finished difference. Result has 151 places, 108 transitions, 931 flow [2024-06-28 03:11:35,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=931, PETRI_PLACES=151, PETRI_TRANSITIONS=108} [2024-06-28 03:11:35,006 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-28 03:11:35,006 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 108 transitions, 931 flow [2024-06-28 03:11:35,007 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) [2024-06-28 03:11:35,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:35,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:35,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:11:35,007 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:35,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:35,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1402550626, now seen corresponding path program 5 times [2024-06-28 03:11:35,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:35,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868020] [2024-06-28 03:11:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:35,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:35,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:35,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868020] [2024-06-28 03:11:35,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:35,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:35,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:35,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362224621] [2024-06-28 03:11:35,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:35,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:35,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:35,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:35,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 108 transitions, 931 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) [2024-06-28 03:11:35,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:35,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:35,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:36,144 INFO L124 PetriNetUnfolderBase]: 295/591 cut-off events. [2024-06-28 03:11:36,145 INFO L125 PetriNetUnfolderBase]: For 27674/27674 co-relation queries the response was YES. [2024-06-28 03:11:36,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 591 events. 295/591 cut-off events. For 27674/27674 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2763 event pairs, 55 based on Foata normal form. 8/598 useless extension candidates. Maximal degree in co-relation 3042. Up to 387 conditions per place. [2024-06-28 03:11:36,148 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 74 selfloop transitions, 37 changer transitions 15/128 dead transitions. [2024-06-28 03:11:36,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 128 transitions, 1248 flow [2024-06-28 03:11:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:11:36,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:11:36,149 INFO L175 Difference]: Start difference. First operand has 151 places, 108 transitions, 931 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:11:36,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 128 transitions, 1248 flow [2024-06-28 03:11:36,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 128 transitions, 1146 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:36,188 INFO L231 Difference]: Finished difference. Result has 147 places, 105 transitions, 880 flow [2024-06-28 03:11:36,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=880, PETRI_PLACES=147, PETRI_TRANSITIONS=105} [2024-06-28 03:11:36,188 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-28 03:11:36,188 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 105 transitions, 880 flow [2024-06-28 03:11:36,189 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) [2024-06-28 03:11:36,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:36,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:36,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:11:36,189 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:36,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:36,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1398081976, now seen corresponding path program 6 times [2024-06-28 03:11:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:36,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182496341] [2024-06-28 03:11:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:36,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:36,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182496341] [2024-06-28 03:11:36,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182496341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:36,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:36,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:36,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256441040] [2024-06-28 03:11:36,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:36,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:36,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:36,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:37,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:37,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 105 transitions, 880 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) [2024-06-28 03:11:37,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:37,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:37,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:37,388 INFO L124 PetriNetUnfolderBase]: 286/576 cut-off events. [2024-06-28 03:11:37,390 INFO L125 PetriNetUnfolderBase]: For 25308/25308 co-relation queries the response was YES. [2024-06-28 03:11:37,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2973 conditions, 576 events. 286/576 cut-off events. For 25308/25308 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2687 event pairs, 53 based on Foata normal form. 8/583 useless extension candidates. Maximal degree in co-relation 2915. Up to 369 conditions per place. [2024-06-28 03:11:37,394 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 72 selfloop transitions, 36 changer transitions 14/124 dead transitions. [2024-06-28 03:11:37,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 124 transitions, 1184 flow [2024-06-28 03:11:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:11:37,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:11:37,394 INFO L175 Difference]: Start difference. First operand has 147 places, 105 transitions, 880 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:11:37,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 124 transitions, 1184 flow [2024-06-28 03:11:37,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 124 transitions, 1106 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:37,428 INFO L231 Difference]: Finished difference. Result has 145 places, 102 transitions, 856 flow [2024-06-28 03:11:37,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=856, PETRI_PLACES=145, PETRI_TRANSITIONS=102} [2024-06-28 03:11:37,429 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-28 03:11:37,429 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 102 transitions, 856 flow [2024-06-28 03:11:37,429 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) [2024-06-28 03:11:37,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:37,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:37,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:11:37,429 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:37,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:37,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1397966656, now seen corresponding path program 7 times [2024-06-28 03:11:37,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:37,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706162303] [2024-06-28 03:11:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:37,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:38,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:38,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706162303] [2024-06-28 03:11:38,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706162303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:38,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:38,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:38,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134810131] [2024-06-28 03:11:38,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:38,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:38,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 102 transitions, 856 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) [2024-06-28 03:11:38,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:38,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:38,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:38,557 INFO L124 PetriNetUnfolderBase]: 279/563 cut-off events. [2024-06-28 03:11:38,557 INFO L125 PetriNetUnfolderBase]: For 25302/25302 co-relation queries the response was YES. [2024-06-28 03:11:38,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 563 events. 279/563 cut-off events. For 25302/25302 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2587 event pairs, 53 based on Foata normal form. 8/570 useless extension candidates. Maximal degree in co-relation 2861. Up to 351 conditions per place. [2024-06-28 03:11:38,560 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 68 selfloop transitions, 31 changer transitions 21/122 dead transitions. [2024-06-28 03:11:38,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 122 transitions, 1158 flow [2024-06-28 03:11:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:11:38,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:11:38,561 INFO L175 Difference]: Start difference. First operand has 145 places, 102 transitions, 856 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:11:38,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 122 transitions, 1158 flow [2024-06-28 03:11:38,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 122 transitions, 1040 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:11:38,591 INFO L231 Difference]: Finished difference. Result has 139 places, 94 transitions, 744 flow [2024-06-28 03:11:38,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=744, PETRI_PLACES=139, PETRI_TRANSITIONS=94} [2024-06-28 03:11:38,592 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-06-28 03:11:38,592 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 94 transitions, 744 flow [2024-06-28 03:11:38,592 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) [2024-06-28 03:11:38,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:38,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:38,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:11:38,592 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:38,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash 523631330, now seen corresponding path program 8 times [2024-06-28 03:11:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:38,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700574873] [2024-06-28 03:11:38,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:38,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:39,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:39,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700574873] [2024-06-28 03:11:39,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700574873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:39,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:39,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:39,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554924591] [2024-06-28 03:11:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:39,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:39,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:39,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:39,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 94 transitions, 744 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) [2024-06-28 03:11:39,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:39,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:39,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:39,706 INFO L124 PetriNetUnfolderBase]: 233/463 cut-off events. [2024-06-28 03:11:39,707 INFO L125 PetriNetUnfolderBase]: For 22962/22962 co-relation queries the response was YES. [2024-06-28 03:11:39,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2438 conditions, 463 events. 233/463 cut-off events. For 22962/22962 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1986 event pairs, 47 based on Foata normal form. 8/470 useless extension candidates. Maximal degree in co-relation 2383. Up to 135 conditions per place. [2024-06-28 03:11:39,709 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 55 selfloop transitions, 48 changer transitions 10/115 dead transitions. [2024-06-28 03:11:39,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 115 transitions, 1120 flow [2024-06-28 03:11:39,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:39,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:11:39,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:11:39,710 INFO L175 Difference]: Start difference. First operand has 139 places, 94 transitions, 744 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:11:39,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 115 transitions, 1120 flow [2024-06-28 03:11:39,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 115 transitions, 1011 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:11:39,732 INFO L231 Difference]: Finished difference. Result has 131 places, 91 transitions, 726 flow [2024-06-28 03:11:39,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=726, PETRI_PLACES=131, PETRI_TRANSITIONS=91} [2024-06-28 03:11:39,732 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 102 predicate places. [2024-06-28 03:11:39,732 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 91 transitions, 726 flow [2024-06-28 03:11:39,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:39,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:39,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:39,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:11:39,733 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:39,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:39,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1599590678, now seen corresponding path program 9 times [2024-06-28 03:11:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:39,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357435225] [2024-06-28 03:11:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:39,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357435225] [2024-06-28 03:11:40,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357435225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:40,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:40,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:40,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193470886] [2024-06-28 03:11:40,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:40,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:40,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:40,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 91 transitions, 726 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) [2024-06-28 03:11:40,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:40,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:40,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:40,842 INFO L124 PetriNetUnfolderBase]: 284/560 cut-off events. [2024-06-28 03:11:40,843 INFO L125 PetriNetUnfolderBase]: For 27418/27418 co-relation queries the response was YES. [2024-06-28 03:11:40,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 560 events. 284/560 cut-off events. For 27418/27418 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2573 event pairs, 68 based on Foata normal form. 8/567 useless extension candidates. Maximal degree in co-relation 3094. Up to 306 conditions per place. [2024-06-28 03:11:40,845 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 76 selfloop transitions, 46 changer transitions 7/131 dead transitions. [2024-06-28 03:11:40,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 131 transitions, 1257 flow [2024-06-28 03:11:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:11:40,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-28 03:11:40,846 INFO L175 Difference]: Start difference. First operand has 131 places, 91 transitions, 726 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:11:40,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 131 transitions, 1257 flow [2024-06-28 03:11:40,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 131 transitions, 1154 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:40,875 INFO L231 Difference]: Finished difference. Result has 132 places, 100 transitions, 840 flow [2024-06-28 03:11:40,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=840, PETRI_PLACES=132, PETRI_TRANSITIONS=100} [2024-06-28 03:11:40,876 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-06-28 03:11:40,876 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 100 transitions, 840 flow [2024-06-28 03:11:40,876 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) [2024-06-28 03:11:40,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:40,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:40,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:11:40,877 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:40,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1595117378, now seen corresponding path program 10 times [2024-06-28 03:11:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:40,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733320753] [2024-06-28 03:11:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733320753] [2024-06-28 03:11:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733320753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:41,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:41,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:41,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125096780] [2024-06-28 03:11:41,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:41,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:41,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:41,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 100 transitions, 840 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) [2024-06-28 03:11:41,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:41,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:41,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:42,110 INFO L124 PetriNetUnfolderBase]: 291/573 cut-off events. [2024-06-28 03:11:42,110 INFO L125 PetriNetUnfolderBase]: For 26089/26089 co-relation queries the response was YES. [2024-06-28 03:11:42,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3266 conditions, 573 events. 291/573 cut-off events. For 26089/26089 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2656 event pairs, 72 based on Foata normal form. 10/582 useless extension candidates. Maximal degree in co-relation 3213. Up to 410 conditions per place. [2024-06-28 03:11:42,117 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 76 selfloop transitions, 29 changer transitions 13/120 dead transitions. [2024-06-28 03:11:42,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 120 transitions, 1166 flow [2024-06-28 03:11:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:42,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:11:42,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-28 03:11:42,118 INFO L175 Difference]: Start difference. First operand has 132 places, 100 transitions, 840 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:11:42,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 120 transitions, 1166 flow [2024-06-28 03:11:42,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 120 transitions, 1131 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:42,158 INFO L231 Difference]: Finished difference. Result has 137 places, 99 transitions, 870 flow [2024-06-28 03:11:42,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=870, PETRI_PLACES=137, PETRI_TRANSITIONS=99} [2024-06-28 03:11:42,158 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2024-06-28 03:11:42,158 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 99 transitions, 870 flow [2024-06-28 03:11:42,158 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) [2024-06-28 03:11:42,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:42,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:11:42,159 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:42,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 88836846, now seen corresponding path program 11 times [2024-06-28 03:11:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:42,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603661632] [2024-06-28 03:11:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:42,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:42,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603661632] [2024-06-28 03:11:42,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603661632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:42,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:42,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252203859] [2024-06-28 03:11:42,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:42,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:42,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:42,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:42,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 99 transitions, 870 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) [2024-06-28 03:11:42,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:42,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:42,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:43,156 INFO L124 PetriNetUnfolderBase]: 262/526 cut-off events. [2024-06-28 03:11:43,157 INFO L125 PetriNetUnfolderBase]: For 26109/26109 co-relation queries the response was YES. [2024-06-28 03:11:43,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2767 conditions, 526 events. 262/526 cut-off events. For 26109/26109 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2389 event pairs, 55 based on Foata normal form. 20/545 useless extension candidates. Maximal degree in co-relation 2712. Up to 246 conditions per place. [2024-06-28 03:11:43,160 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 49 selfloop transitions, 51 changer transitions 15/117 dead transitions. [2024-06-28 03:11:43,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 117 transitions, 1162 flow [2024-06-28 03:11:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:11:43,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-28 03:11:43,162 INFO L175 Difference]: Start difference. First operand has 137 places, 99 transitions, 870 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:11:43,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 117 transitions, 1162 flow [2024-06-28 03:11:43,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 117 transitions, 1100 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:43,186 INFO L231 Difference]: Finished difference. Result has 137 places, 92 transitions, 847 flow [2024-06-28 03:11:43,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=847, PETRI_PLACES=137, PETRI_TRANSITIONS=92} [2024-06-28 03:11:43,187 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2024-06-28 03:11:43,187 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 92 transitions, 847 flow [2024-06-28 03:11:43,191 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) [2024-06-28 03:11:43,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:43,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:43,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:11:43,191 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:43,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:43,191 INFO L85 PathProgramCache]: Analyzing trace with hash 93300846, now seen corresponding path program 12 times [2024-06-28 03:11:43,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:43,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866946562] [2024-06-28 03:11:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:43,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:43,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866946562] [2024-06-28 03:11:43,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866946562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:43,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:43,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:11:43,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928782048] [2024-06-28 03:11:43,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:43,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:11:43,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:11:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:11:43,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:43,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 92 transitions, 847 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) [2024-06-28 03:11:43,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:43,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:43,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:44,102 INFO L124 PetriNetUnfolderBase]: 228/460 cut-off events. [2024-06-28 03:11:44,102 INFO L125 PetriNetUnfolderBase]: For 18013/18013 co-relation queries the response was YES. [2024-06-28 03:11:44,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2552 conditions, 460 events. 228/460 cut-off events. For 18013/18013 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2021 event pairs, 47 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 2498. Up to 292 conditions per place. [2024-06-28 03:11:44,105 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 61 selfloop transitions, 29 changer transitions 17/109 dead transitions. [2024-06-28 03:11:44,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 109 transitions, 1114 flow [2024-06-28 03:11:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:11:44,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-28 03:11:44,106 INFO L175 Difference]: Start difference. First operand has 137 places, 92 transitions, 847 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:11:44,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 109 transitions, 1114 flow [2024-06-28 03:11:44,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 109 transitions, 971 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:11:44,129 INFO L231 Difference]: Finished difference. Result has 131 places, 85 transitions, 701 flow [2024-06-28 03:11:44,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=701, PETRI_PLACES=131, PETRI_TRANSITIONS=85} [2024-06-28 03:11:44,131 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 102 predicate places. [2024-06-28 03:11:44,131 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 85 transitions, 701 flow [2024-06-28 03:11:44,131 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) [2024-06-28 03:11:44,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:44,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:44,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:11:44,132 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:44,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash 259534626, now seen corresponding path program 13 times [2024-06-28 03:11:44,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:44,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540438962] [2024-06-28 03:11:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:44,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:44,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:44,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540438962] [2024-06-28 03:11:44,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540438962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:44,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:44,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:44,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202141902] [2024-06-28 03:11:44,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:44,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:44,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:44,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:44,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:45,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:45,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 85 transitions, 701 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:45,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:45,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:45,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:45,298 INFO L124 PetriNetUnfolderBase]: 242/490 cut-off events. [2024-06-28 03:11:45,298 INFO L125 PetriNetUnfolderBase]: For 23363/23363 co-relation queries the response was YES. [2024-06-28 03:11:45,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 490 events. 242/490 cut-off events. For 23363/23363 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2180 event pairs, 57 based on Foata normal form. 8/497 useless extension candidates. Maximal degree in co-relation 2766. Up to 250 conditions per place. [2024-06-28 03:11:45,301 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 65 selfloop transitions, 33 changer transitions 8/108 dead transitions. [2024-06-28 03:11:45,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 108 transitions, 1067 flow [2024-06-28 03:11:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:11:45,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-28 03:11:45,302 INFO L175 Difference]: Start difference. First operand has 131 places, 85 transitions, 701 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:11:45,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 108 transitions, 1067 flow [2024-06-28 03:11:45,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 108 transitions, 987 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:11:45,325 INFO L231 Difference]: Finished difference. Result has 127 places, 82 transitions, 668 flow [2024-06-28 03:11:45,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=668, PETRI_PLACES=127, PETRI_TRANSITIONS=82} [2024-06-28 03:11:45,327 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-28 03:11:45,327 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions, 668 flow [2024-06-28 03:11:45,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:45,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:45,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:45,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:11:45,328 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:45,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:45,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1428883598, now seen corresponding path program 14 times [2024-06-28 03:11:45,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:45,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654190228] [2024-06-28 03:11:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:45,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:46,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:46,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654190228] [2024-06-28 03:11:46,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654190228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:46,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:46,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:46,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330875552] [2024-06-28 03:11:46,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:46,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:46,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:46,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:46,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:46,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 82 transitions, 668 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:46,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:46,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:46,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:46,588 INFO L124 PetriNetUnfolderBase]: 209/427 cut-off events. [2024-06-28 03:11:46,588 INFO L125 PetriNetUnfolderBase]: For 17311/17311 co-relation queries the response was YES. [2024-06-28 03:11:46,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2235 conditions, 427 events. 209/427 cut-off events. For 17311/17311 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1826 event pairs, 50 based on Foata normal form. 10/436 useless extension candidates. Maximal degree in co-relation 2186. Up to 250 conditions per place. [2024-06-28 03:11:46,590 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 54 selfloop transitions, 25 changer transitions 19/100 dead transitions. [2024-06-28 03:11:46,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 100 transitions, 924 flow [2024-06-28 03:11:46,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:11:46,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:11:46,591 INFO L175 Difference]: Start difference. First operand has 127 places, 82 transitions, 668 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:11:46,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 100 transitions, 924 flow [2024-06-28 03:11:46,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 100 transitions, 858 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:46,608 INFO L231 Difference]: Finished difference. Result has 126 places, 73 transitions, 573 flow [2024-06-28 03:11:46,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=573, PETRI_PLACES=126, PETRI_TRANSITIONS=73} [2024-06-28 03:11:46,609 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-28 03:11:46,609 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 73 transitions, 573 flow [2024-06-28 03:11:46,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:46,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:46,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:46,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:11:46,610 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:46,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:46,610 INFO L85 PathProgramCache]: Analyzing trace with hash 701128774, now seen corresponding path program 1 times [2024-06-28 03:11:46,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:46,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403892805] [2024-06-28 03:11:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:46,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:47,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:47,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:47,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403892805] [2024-06-28 03:11:47,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403892805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:47,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:47,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:47,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930618791] [2024-06-28 03:11:47,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:47,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:47,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:47,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:47,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 73 transitions, 573 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:47,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:47,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:47,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:48,030 INFO L124 PetriNetUnfolderBase]: 177/363 cut-off events. [2024-06-28 03:11:48,030 INFO L125 PetriNetUnfolderBase]: For 11817/11817 co-relation queries the response was YES. [2024-06-28 03:11:48,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 363 events. 177/363 cut-off events. For 11817/11817 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1474 event pairs, 42 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1896. Up to 267 conditions per place. [2024-06-28 03:11:48,032 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 22 changer transitions 0/87 dead transitions. [2024-06-28 03:11:48,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 87 transitions, 783 flow [2024-06-28 03:11:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:11:48,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-28 03:11:48,033 INFO L175 Difference]: Start difference. First operand has 126 places, 73 transitions, 573 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:11:48,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 87 transitions, 783 flow [2024-06-28 03:11:48,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 87 transitions, 703 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:11:48,047 INFO L231 Difference]: Finished difference. Result has 115 places, 74 transitions, 551 flow [2024-06-28 03:11:48,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=551, PETRI_PLACES=115, PETRI_TRANSITIONS=74} [2024-06-28 03:11:48,048 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-28 03:11:48,048 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 74 transitions, 551 flow [2024-06-28 03:11:48,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:48,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:48,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:48,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:11:48,048 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:48,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:48,049 INFO L85 PathProgramCache]: Analyzing trace with hash 406042262, now seen corresponding path program 15 times [2024-06-28 03:11:48,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:48,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667873882] [2024-06-28 03:11:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:48,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:48,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667873882] [2024-06-28 03:11:48,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667873882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:48,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:48,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:48,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699729565] [2024-06-28 03:11:48,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:48,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:48,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:48,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 74 transitions, 551 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:48,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:48,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:48,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:49,364 INFO L124 PetriNetUnfolderBase]: 218/450 cut-off events. [2024-06-28 03:11:49,364 INFO L125 PetriNetUnfolderBase]: For 17295/17295 co-relation queries the response was YES. [2024-06-28 03:11:49,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2420 conditions, 450 events. 218/450 cut-off events. For 17295/17295 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1974 event pairs, 63 based on Foata normal form. 8/457 useless extension candidates. Maximal degree in co-relation 2376. Up to 284 conditions per place. [2024-06-28 03:11:49,366 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 65 selfloop transitions, 23 changer transitions 7/97 dead transitions. [2024-06-28 03:11:49,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 97 transitions, 885 flow [2024-06-28 03:11:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:11:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:11:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 03:11:49,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 03:11:49,367 INFO L175 Difference]: Start difference. First operand has 115 places, 74 transitions, 551 flow. Second operand 12 states and 136 transitions. [2024-06-28 03:11:49,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 97 transitions, 885 flow [2024-06-28 03:11:49,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 97 transitions, 837 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:49,382 INFO L231 Difference]: Finished difference. Result has 119 places, 72 transitions, 539 flow [2024-06-28 03:11:49,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=539, PETRI_PLACES=119, PETRI_TRANSITIONS=72} [2024-06-28 03:11:49,383 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-28 03:11:49,383 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 72 transitions, 539 flow [2024-06-28 03:11:49,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:49,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:49,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:49,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:11:49,383 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:49,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:49,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1696069802, now seen corresponding path program 16 times [2024-06-28 03:11:49,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:49,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748314297] [2024-06-28 03:11:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:49,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:50,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:50,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748314297] [2024-06-28 03:11:50,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748314297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:50,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:50,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:50,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767387365] [2024-06-28 03:11:50,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:50,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:50,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:50,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:50,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 72 transitions, 539 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:50,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:50,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:50,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:50,550 INFO L124 PetriNetUnfolderBase]: 187/389 cut-off events. [2024-06-28 03:11:50,550 INFO L125 PetriNetUnfolderBase]: For 14502/14502 co-relation queries the response was YES. [2024-06-28 03:11:50,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 389 events. 187/389 cut-off events. For 14502/14502 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1627 event pairs, 54 based on Foata normal form. 10/398 useless extension candidates. Maximal degree in co-relation 1899. Up to 284 conditions per place. [2024-06-28 03:11:50,552 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 55 selfloop transitions, 18 changer transitions 15/90 dead transitions. [2024-06-28 03:11:50,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 90 transitions, 775 flow [2024-06-28 03:11:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:11:50,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-28 03:11:50,553 INFO L175 Difference]: Start difference. First operand has 119 places, 72 transitions, 539 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:11:50,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 90 transitions, 775 flow [2024-06-28 03:11:50,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 90 transitions, 727 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:11:50,566 INFO L231 Difference]: Finished difference. Result has 117 places, 67 transitions, 494 flow [2024-06-28 03:11:50,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=494, PETRI_PLACES=117, PETRI_TRANSITIONS=67} [2024-06-28 03:11:50,566 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-28 03:11:50,566 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 67 transitions, 494 flow [2024-06-28 03:11:50,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:50,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:50,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:50,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:11:50,567 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:50,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash -665614976, now seen corresponding path program 2 times [2024-06-28 03:11:50,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:50,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781949158] [2024-06-28 03:11:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:50,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:51,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:51,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781949158] [2024-06-28 03:11:51,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781949158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:51,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:51,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:51,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252714831] [2024-06-28 03:11:51,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:51,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:51,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:51,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:51,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:51,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:51,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 67 transitions, 494 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:51,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:51,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:51,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:51,804 INFO L124 PetriNetUnfolderBase]: 165/343 cut-off events. [2024-06-28 03:11:51,804 INFO L125 PetriNetUnfolderBase]: For 9818/9818 co-relation queries the response was YES. [2024-06-28 03:11:51,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 343 events. 165/343 cut-off events. For 9818/9818 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1369 event pairs, 48 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 1720. Up to 293 conditions per place. [2024-06-28 03:11:51,805 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 64 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-06-28 03:11:51,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 81 transitions, 694 flow [2024-06-28 03:11:51,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:11:51,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-28 03:11:51,806 INFO L175 Difference]: Start difference. First operand has 117 places, 67 transitions, 494 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:11:51,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 81 transitions, 694 flow [2024-06-28 03:11:51,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 81 transitions, 650 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:51,816 INFO L231 Difference]: Finished difference. Result has 109 places, 68 transitions, 496 flow [2024-06-28 03:11:51,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=496, PETRI_PLACES=109, PETRI_TRANSITIONS=68} [2024-06-28 03:11:51,817 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-28 03:11:51,817 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 68 transitions, 496 flow [2024-06-28 03:11:51,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:51,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:51,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:51,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:11:51,817 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:51,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:51,818 INFO L85 PathProgramCache]: Analyzing trace with hash -702621616, now seen corresponding path program 17 times [2024-06-28 03:11:51,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:51,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383962745] [2024-06-28 03:11:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:51,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:52,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:52,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383962745] [2024-06-28 03:11:52,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383962745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:52,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:52,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:52,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337014592] [2024-06-28 03:11:52,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:52,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:52,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:52,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:52,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:52,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 68 transitions, 496 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:52,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:52,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:52,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:53,241 INFO L124 PetriNetUnfolderBase]: 206/430 cut-off events. [2024-06-28 03:11:53,242 INFO L125 PetriNetUnfolderBase]: For 14234/14234 co-relation queries the response was YES. [2024-06-28 03:11:53,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 430 events. 206/430 cut-off events. For 14234/14234 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1879 event pairs, 67 based on Foata normal form. 8/437 useless extension candidates. Maximal degree in co-relation 2198. Up to 291 conditions per place. [2024-06-28 03:11:53,244 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 67 selfloop transitions, 14 changer transitions 7/90 dead transitions. [2024-06-28 03:11:53,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 90 transitions, 806 flow [2024-06-28 03:11:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:11:53,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-28 03:11:53,245 INFO L175 Difference]: Start difference. First operand has 109 places, 68 transitions, 496 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:11:53,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 90 transitions, 806 flow [2024-06-28 03:11:53,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 90 transitions, 770 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:53,257 INFO L231 Difference]: Finished difference. Result has 112 places, 66 transitions, 478 flow [2024-06-28 03:11:53,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=112, PETRI_TRANSITIONS=66} [2024-06-28 03:11:53,259 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-28 03:11:53,259 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 66 transitions, 478 flow [2024-06-28 03:11:53,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:53,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:53,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:53,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:11:53,259 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:53,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:53,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1051539438, now seen corresponding path program 3 times [2024-06-28 03:11:53,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:53,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283608163] [2024-06-28 03:11:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:53,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:54,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:54,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283608163] [2024-06-28 03:11:54,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283608163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:54,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:54,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:54,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747850962] [2024-06-28 03:11:54,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:54,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:54,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:54,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:54,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:54,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 66 transitions, 478 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:54,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:54,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:54,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:54,335 INFO L124 PetriNetUnfolderBase]: 192/400 cut-off events. [2024-06-28 03:11:54,335 INFO L125 PetriNetUnfolderBase]: For 12805/12805 co-relation queries the response was YES. [2024-06-28 03:11:54,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 400 events. 192/400 cut-off events. For 12805/12805 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1691 event pairs, 71 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 2132. Up to 359 conditions per place. [2024-06-28 03:11:54,337 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 14 changer transitions 0/79 dead transitions. [2024-06-28 03:11:54,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 79 transitions, 672 flow [2024-06-28 03:11:54,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:11:54,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:11:54,338 INFO L175 Difference]: Start difference. First operand has 112 places, 66 transitions, 478 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:11:54,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 79 transitions, 672 flow [2024-06-28 03:11:54,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 79 transitions, 642 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:54,351 INFO L231 Difference]: Finished difference. Result has 110 places, 67 transitions, 494 flow [2024-06-28 03:11:54,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=494, PETRI_PLACES=110, PETRI_TRANSITIONS=67} [2024-06-28 03:11:54,352 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-28 03:11:54,352 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 67 transitions, 494 flow [2024-06-28 03:11:54,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:54,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:54,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:54,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:11:54,353 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:54,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash 249396326, now seen corresponding path program 4 times [2024-06-28 03:11:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:54,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870546103] [2024-06-28 03:11:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:55,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870546103] [2024-06-28 03:11:55,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870546103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:55,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:55,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:55,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124455246] [2024-06-28 03:11:55,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:55,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:55,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:55,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:55,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:55,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 67 transitions, 494 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:55,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:55,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:55,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:55,557 INFO L124 PetriNetUnfolderBase]: 196/408 cut-off events. [2024-06-28 03:11:55,557 INFO L125 PetriNetUnfolderBase]: For 12046/12046 co-relation queries the response was YES. [2024-06-28 03:11:55,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 408 events. 196/408 cut-off events. For 12046/12046 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1744 event pairs, 71 based on Foata normal form. 2/409 useless extension candidates. Maximal degree in co-relation 2162. Up to 362 conditions per place. [2024-06-28 03:11:55,559 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 59 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2024-06-28 03:11:55,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 80 transitions, 694 flow [2024-06-28 03:11:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:55,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:11:55,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-28 03:11:55,560 INFO L175 Difference]: Start difference. First operand has 110 places, 67 transitions, 494 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:11:55,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 80 transitions, 694 flow [2024-06-28 03:11:55,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 80 transitions, 658 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:55,575 INFO L231 Difference]: Finished difference. Result has 112 places, 68 transitions, 516 flow [2024-06-28 03:11:55,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=516, PETRI_PLACES=112, PETRI_TRANSITIONS=68} [2024-06-28 03:11:55,575 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-28 03:11:55,575 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 68 transitions, 516 flow [2024-06-28 03:11:55,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:55,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:55,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:55,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:11:55,576 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:55,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash 249158742, now seen corresponding path program 18 times [2024-06-28 03:11:55,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:55,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21646619] [2024-06-28 03:11:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:55,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:56,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:56,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21646619] [2024-06-28 03:11:56,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21646619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:56,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:56,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:56,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444490719] [2024-06-28 03:11:56,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:56,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:56,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:56,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:56,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 68 transitions, 516 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:56,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:56,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:56,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:56,904 INFO L124 PetriNetUnfolderBase]: 205/431 cut-off events. [2024-06-28 03:11:56,905 INFO L125 PetriNetUnfolderBase]: For 15387/15387 co-relation queries the response was YES. [2024-06-28 03:11:56,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 431 events. 205/431 cut-off events. For 15387/15387 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1886 event pairs, 82 based on Foata normal form. 10/440 useless extension candidates. Maximal degree in co-relation 2204. Up to 341 conditions per place. [2024-06-28 03:11:56,906 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 56 selfloop transitions, 17 changer transitions 11/86 dead transitions. [2024-06-28 03:11:56,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 86 transitions, 744 flow [2024-06-28 03:11:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:11:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:11:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:11:56,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:11:56,907 INFO L175 Difference]: Start difference. First operand has 112 places, 68 transitions, 516 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:11:56,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 86 transitions, 744 flow [2024-06-28 03:11:56,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 86 transitions, 696 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:11:56,920 INFO L231 Difference]: Finished difference. Result has 115 places, 65 transitions, 484 flow [2024-06-28 03:11:56,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=484, PETRI_PLACES=115, PETRI_TRANSITIONS=65} [2024-06-28 03:11:56,921 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-28 03:11:56,921 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 65 transitions, 484 flow [2024-06-28 03:11:56,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:56,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:56,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:56,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:11:56,922 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:56,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash 21084612, now seen corresponding path program 19 times [2024-06-28 03:11:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:56,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413655796] [2024-06-28 03:11:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:56,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:57,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:57,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413655796] [2024-06-28 03:11:57,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413655796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:57,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:57,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:57,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763718139] [2024-06-28 03:11:57,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:57,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:57,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:57,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:57,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:57,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:57,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 65 transitions, 484 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:57,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:57,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:57,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:58,158 INFO L124 PetriNetUnfolderBase]: 166/358 cut-off events. [2024-06-28 03:11:58,158 INFO L125 PetriNetUnfolderBase]: For 11892/11892 co-relation queries the response was YES. [2024-06-28 03:11:58,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 358 events. 166/358 cut-off events. For 11892/11892 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1491 event pairs, 63 based on Foata normal form. 10/367 useless extension candidates. Maximal degree in co-relation 1672. Up to 255 conditions per place. [2024-06-28 03:11:58,159 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 50 selfloop transitions, 18 changer transitions 14/84 dead transitions. [2024-06-28 03:11:58,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 84 transitions, 710 flow [2024-06-28 03:11:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:11:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:11:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:11:58,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 03:11:58,161 INFO L175 Difference]: Start difference. First operand has 115 places, 65 transitions, 484 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:11:58,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 84 transitions, 710 flow [2024-06-28 03:11:58,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 84 transitions, 672 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:11:58,172 INFO L231 Difference]: Finished difference. Result has 114 places, 60 transitions, 447 flow [2024-06-28 03:11:58,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=447, PETRI_PLACES=114, PETRI_TRANSITIONS=60} [2024-06-28 03:11:58,172 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-28 03:11:58,172 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 60 transitions, 447 flow [2024-06-28 03:11:58,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:58,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:58,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:58,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:11:58,173 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:58,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1334360704, now seen corresponding path program 5 times [2024-06-28 03:11:58,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:58,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774035906] [2024-06-28 03:11:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:58,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:59,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:59,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774035906] [2024-06-28 03:11:59,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774035906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:59,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:59,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:11:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808541288] [2024-06-28 03:11:59,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:59,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:11:59,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:11:59,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:11:59,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:11:59,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 60 transitions, 447 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:59,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:59,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:11:59,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:59,426 INFO L124 PetriNetUnfolderBase]: 167/365 cut-off events. [2024-06-28 03:11:59,426 INFO L125 PetriNetUnfolderBase]: For 12615/12615 co-relation queries the response was YES. [2024-06-28 03:11:59,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 365 events. 167/365 cut-off events. For 12615/12615 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1525 event pairs, 74 based on Foata normal form. 8/372 useless extension candidates. Maximal degree in co-relation 1812. Up to 242 conditions per place. [2024-06-28 03:11:59,427 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 55 selfloop transitions, 13 changer transitions 8/78 dead transitions. [2024-06-28 03:11:59,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 78 transitions, 719 flow [2024-06-28 03:11:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:11:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:11:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:11:59,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-28 03:11:59,444 INFO L175 Difference]: Start difference. First operand has 114 places, 60 transitions, 447 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:11:59,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 78 transitions, 719 flow [2024-06-28 03:11:59,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 78 transitions, 667 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:11:59,469 INFO L231 Difference]: Finished difference. Result has 105 places, 57 transitions, 410 flow [2024-06-28 03:11:59,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=410, PETRI_PLACES=105, PETRI_TRANSITIONS=57} [2024-06-28 03:11:59,469 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-28 03:11:59,470 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 57 transitions, 410 flow [2024-06-28 03:11:59,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:59,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:59,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:59,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:11:59,470 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:11:59,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:59,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1039141504, now seen corresponding path program 6 times [2024-06-28 03:11:59,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:59,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625135519] [2024-06-28 03:11:59,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:59,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:00,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:00,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625135519] [2024-06-28 03:12:00,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625135519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:00,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:00,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100545576] [2024-06-28 03:12:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:00,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:00,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:00,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:12:00,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 57 transitions, 410 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:00,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:00,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:12:00,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:00,540 INFO L124 PetriNetUnfolderBase]: 144/320 cut-off events. [2024-06-28 03:12:00,540 INFO L125 PetriNetUnfolderBase]: For 7656/7656 co-relation queries the response was YES. [2024-06-28 03:12:00,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 320 events. 144/320 cut-off events. For 7656/7656 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1268 event pairs, 67 based on Foata normal form. 2/321 useless extension candidates. Maximal degree in co-relation 1522. Up to 277 conditions per place. [2024-06-28 03:12:00,541 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-28 03:12:00,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 69 transitions, 570 flow [2024-06-28 03:12:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:12:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:12:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:12:00,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:12:00,556 INFO L175 Difference]: Start difference. First operand has 105 places, 57 transitions, 410 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:12:00,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 69 transitions, 570 flow [2024-06-28 03:12:00,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 69 transitions, 539 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:12:00,565 INFO L231 Difference]: Finished difference. Result has 104 places, 57 transitions, 413 flow [2024-06-28 03:12:00,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=413, PETRI_PLACES=104, PETRI_TRANSITIONS=57} [2024-06-28 03:12:00,566 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-28 03:12:00,566 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 57 transitions, 413 flow [2024-06-28 03:12:00,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:00,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:00,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:12:00,566 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:00,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash -118530346, now seen corresponding path program 20 times [2024-06-28 03:12:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469068926] [2024-06-28 03:12:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:01,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:01,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469068926] [2024-06-28 03:12:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469068926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:01,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:01,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:12:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355533316] [2024-06-28 03:12:01,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:01,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:12:01,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:01,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:12:01,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:12:01,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:12:01,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 57 transitions, 413 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) [2024-06-28 03:12:01,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:01,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:12:01,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:01,609 INFO L124 PetriNetUnfolderBase]: 134/302 cut-off events. [2024-06-28 03:12:01,609 INFO L125 PetriNetUnfolderBase]: For 6450/6450 co-relation queries the response was YES. [2024-06-28 03:12:01,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 302 events. 134/302 cut-off events. For 6450/6450 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1192 event pairs, 44 based on Foata normal form. 8/309 useless extension candidates. Maximal degree in co-relation 1266. Up to 184 conditions per place. [2024-06-28 03:12:01,610 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 46 selfloop transitions, 12 changer transitions 15/75 dead transitions. [2024-06-28 03:12:01,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 75 transitions, 606 flow [2024-06-28 03:12:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:12:01,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-28 03:12:01,612 INFO L175 Difference]: Start difference. First operand has 104 places, 57 transitions, 413 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:12:01,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 75 transitions, 606 flow [2024-06-28 03:12:01,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 75 transitions, 553 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:12:01,625 INFO L231 Difference]: Finished difference. Result has 106 places, 51 transitions, 346 flow [2024-06-28 03:12:01,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=106, PETRI_TRANSITIONS=51} [2024-06-28 03:12:01,626 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-28 03:12:01,626 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 51 transitions, 346 flow [2024-06-28 03:12:01,626 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) [2024-06-28 03:12:01,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:01,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:01,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:12:01,627 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:01,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:01,627 INFO L85 PathProgramCache]: Analyzing trace with hash -337289843, now seen corresponding path program 1 times [2024-06-28 03:12:01,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:01,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793819133] [2024-06-28 03:12:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:02,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:02,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793819133] [2024-06-28 03:12:02,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793819133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:02,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:02,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:12:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738055847] [2024-06-28 03:12:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:02,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:12:02,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:12:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:12:02,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:12:02,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 51 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:02,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:02,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:12:02,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:03,245 INFO L124 PetriNetUnfolderBase]: 121/275 cut-off events. [2024-06-28 03:12:03,245 INFO L125 PetriNetUnfolderBase]: For 6258/6258 co-relation queries the response was YES. [2024-06-28 03:12:03,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 275 events. 121/275 cut-off events. For 6258/6258 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1043 event pairs, 38 based on Foata normal form. 6/280 useless extension candidates. Maximal degree in co-relation 1125. Up to 164 conditions per place. [2024-06-28 03:12:03,246 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 33 selfloop transitions, 7 changer transitions 26/68 dead transitions. [2024-06-28 03:12:03,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 68 transitions, 522 flow [2024-06-28 03:12:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 03:12:03,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-28 03:12:03,247 INFO L175 Difference]: Start difference. First operand has 106 places, 51 transitions, 346 flow. Second operand 11 states and 114 transitions. [2024-06-28 03:12:03,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 68 transitions, 522 flow [2024-06-28 03:12:03,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 68 transitions, 474 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:12:03,253 INFO L231 Difference]: Finished difference. Result has 95 places, 39 transitions, 244 flow [2024-06-28 03:12:03,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=244, PETRI_PLACES=95, PETRI_TRANSITIONS=39} [2024-06-28 03:12:03,253 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-28 03:12:03,254 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 39 transitions, 244 flow [2024-06-28 03:12:03,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:03,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:03,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:03,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:12:03,254 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:03,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash -90520423, now seen corresponding path program 2 times [2024-06-28 03:12:03,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:03,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020803007] [2024-06-28 03:12:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:03,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:04,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:04,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020803007] [2024-06-28 03:12:04,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020803007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:04,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:04,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:04,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815523815] [2024-06-28 03:12:04,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:04,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:04,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:04,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:04,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:12:04,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 39 transitions, 244 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) [2024-06-28 03:12:04,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:04,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:12:04,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:04,721 INFO L124 PetriNetUnfolderBase]: 98/219 cut-off events. [2024-06-28 03:12:04,721 INFO L125 PetriNetUnfolderBase]: For 4848/4848 co-relation queries the response was YES. [2024-06-28 03:12:04,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 219 events. 98/219 cut-off events. For 4848/4848 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 765 event pairs, 34 based on Foata normal form. 6/225 useless extension candidates. Maximal degree in co-relation 870. Up to 146 conditions per place. [2024-06-28 03:12:04,722 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 29 selfloop transitions, 6 changer transitions 17/54 dead transitions. [2024-06-28 03:12:04,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 54 transitions, 384 flow [2024-06-28 03:12:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:12:04,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-28 03:12:04,723 INFO L175 Difference]: Start difference. First operand has 95 places, 39 transitions, 244 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:12:04,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 54 transitions, 384 flow [2024-06-28 03:12:04,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 54 transitions, 342 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-28 03:12:04,727 INFO L231 Difference]: Finished difference. Result has 76 places, 33 transitions, 185 flow [2024-06-28 03:12:04,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=185, PETRI_PLACES=76, PETRI_TRANSITIONS=33} [2024-06-28 03:12:04,727 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-28 03:12:04,727 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 33 transitions, 185 flow [2024-06-28 03:12:04,727 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) [2024-06-28 03:12:04,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:04,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:04,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:12:04,727 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:04,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash -99362273, now seen corresponding path program 3 times [2024-06-28 03:12:04,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:04,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924599328] [2024-06-28 03:12:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:05,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:05,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924599328] [2024-06-28 03:12:05,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924599328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:05,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:05,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:12:05,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439138544] [2024-06-28 03:12:05,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:05,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:12:05,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:05,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:12:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:12:05,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:12:05,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 33 transitions, 185 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:05,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:05,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:12:05,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:06,253 INFO L124 PetriNetUnfolderBase]: 84/189 cut-off events. [2024-06-28 03:12:06,254 INFO L125 PetriNetUnfolderBase]: For 2948/2948 co-relation queries the response was YES. [2024-06-28 03:12:06,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 189 events. 84/189 cut-off events. For 2948/2948 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 620 event pairs, 32 based on Foata normal form. 6/195 useless extension candidates. Maximal degree in co-relation 708. Up to 128 conditions per place. [2024-06-28 03:12:06,254 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 24 selfloop transitions, 5 changer transitions 16/47 dead transitions. [2024-06-28 03:12:06,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 47 transitions, 307 flow [2024-06-28 03:12:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 03:12:06,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-28 03:12:06,255 INFO L175 Difference]: Start difference. First operand has 76 places, 33 transitions, 185 flow. Second operand 11 states and 105 transitions. [2024-06-28 03:12:06,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 47 transitions, 307 flow [2024-06-28 03:12:06,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 47 transitions, 285 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:12:06,258 INFO L231 Difference]: Finished difference. Result has 67 places, 28 transitions, 148 flow [2024-06-28 03:12:06,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=28} [2024-06-28 03:12:06,258 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-28 03:12:06,258 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 28 transitions, 148 flow [2024-06-28 03:12:06,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:06,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:06,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:06,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:12:06,259 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:06,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1577082655, now seen corresponding path program 4 times [2024-06-28 03:12:06,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:06,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83376206] [2024-06-28 03:12:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:06,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:07,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83376206] [2024-06-28 03:12:07,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83376206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:07,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:07,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:12:07,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073468669] [2024-06-28 03:12:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:07,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:12:07,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:07,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:12:07,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:12:07,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:12:07,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 28 transitions, 148 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:07,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:07,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:12:07,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:07,620 INFO L124 PetriNetUnfolderBase]: 76/173 cut-off events. [2024-06-28 03:12:07,620 INFO L125 PetriNetUnfolderBase]: For 1776/1776 co-relation queries the response was YES. [2024-06-28 03:12:07,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 173 events. 76/173 cut-off events. For 1776/1776 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 553 event pairs, 30 based on Foata normal form. 6/179 useless extension candidates. Maximal degree in co-relation 612. Up to 112 conditions per place. [2024-06-28 03:12:07,621 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 21 selfloop transitions, 6 changer transitions 14/43 dead transitions. [2024-06-28 03:12:07,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 43 transitions, 270 flow [2024-06-28 03:12:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:07,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-28 03:12:07,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-06-28 03:12:07,622 INFO L175 Difference]: Start difference. First operand has 67 places, 28 transitions, 148 flow. Second operand 11 states and 104 transitions. [2024-06-28 03:12:07,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 43 transitions, 270 flow [2024-06-28 03:12:07,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 43 transitions, 252 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:12:07,624 INFO L231 Difference]: Finished difference. Result has 62 places, 25 transitions, 129 flow [2024-06-28 03:12:07,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=25} [2024-06-28 03:12:07,624 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-28 03:12:07,624 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 25 transitions, 129 flow [2024-06-28 03:12:07,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:07,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:07,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:07,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:12:07,625 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:07,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:07,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1417253961, now seen corresponding path program 5 times [2024-06-28 03:12:07,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:07,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503888952] [2024-06-28 03:12:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:07,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:08,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503888952] [2024-06-28 03:12:08,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503888952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:08,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:08,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61620515] [2024-06-28 03:12:08,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:08,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:08,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:12:08,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 25 transitions, 129 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) [2024-06-28 03:12:08,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:08,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:12:08,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:08,770 INFO L124 PetriNetUnfolderBase]: 49/116 cut-off events. [2024-06-28 03:12:08,770 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2024-06-28 03:12:08,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 116 events. 49/116 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 289 event pairs, 13 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 370. Up to 50 conditions per place. [2024-06-28 03:12:08,771 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 17 selfloop transitions, 6 changer transitions 14/39 dead transitions. [2024-06-28 03:12:08,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 39 transitions, 233 flow [2024-06-28 03:12:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:08,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-28 03:12:08,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-06-28 03:12:08,772 INFO L175 Difference]: Start difference. First operand has 62 places, 25 transitions, 129 flow. Second operand 11 states and 104 transitions. [2024-06-28 03:12:08,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 39 transitions, 233 flow [2024-06-28 03:12:08,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 39 transitions, 211 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:12:08,773 INFO L231 Difference]: Finished difference. Result has 57 places, 21 transitions, 103 flow [2024-06-28 03:12:08,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=103, PETRI_PLACES=57, PETRI_TRANSITIONS=21} [2024-06-28 03:12:08,774 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-28 03:12:08,774 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 21 transitions, 103 flow [2024-06-28 03:12:08,774 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) [2024-06-28 03:12:08,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:08,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:08,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:12:08,774 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:12:08,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1832393873, now seen corresponding path program 6 times [2024-06-28 03:12:08,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:08,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862263979] [2024-06-28 03:12:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:08,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:09,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862263979] [2024-06-28 03:12:09,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862263979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:09,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:09,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:12:09,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687983388] [2024-06-28 03:12:09,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:09,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:12:09,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:09,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:12:09,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:12:09,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:12:09,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 21 transitions, 103 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) [2024-06-28 03:12:09,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:09,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:12:09,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:10,020 INFO L124 PetriNetUnfolderBase]: 20/57 cut-off events. [2024-06-28 03:12:10,020 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2024-06-28 03:12:10,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 57 events. 20/57 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 6/63 useless extension candidates. Maximal degree in co-relation 154. Up to 24 conditions per place. [2024-06-28 03:12:10,020 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-06-28 03:12:10,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 28 transitions, 147 flow [2024-06-28 03:12:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:12:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:12:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2024-06-28 03:12:10,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2818181818181818 [2024-06-28 03:12:10,021 INFO L175 Difference]: Start difference. First operand has 57 places, 21 transitions, 103 flow. Second operand 11 states and 93 transitions. [2024-06-28 03:12:10,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 28 transitions, 147 flow [2024-06-28 03:12:10,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 119 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-28 03:12:10,022 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-28 03:12:10,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-28 03:12:10,022 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-28 03:12:10,022 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-28 03:12:10,022 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) [2024-06-28 03:12:10,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:12:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:12:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:12:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:12:10,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:12:10,026 INFO L445 BasicCegarLoop]: Path program histogram: [20, 11, 8, 6, 6, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:10,028 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:12:10,028 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:12:10,032 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:12:10,032 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:12:10,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:12:10 BasicIcfg [2024-06-28 03:12:10,033 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:12:10,034 INFO L158 Benchmark]: Toolchain (without parser) took 91900.39ms. Allocated memory was 180.4MB in the beginning and 847.2MB in the end (delta: 666.9MB). Free memory was 108.8MB in the beginning and 694.3MB in the end (delta: -585.5MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. [2024-06-28 03:12:10,034 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 90.2MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:12:10,034 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory was 146.7MB in the beginning and 146.7MB in the end (delta: 15.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:12:10,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.18ms. Allocated memory is still 180.4MB. Free memory was 108.8MB in the beginning and 128.1MB in the end (delta: -19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-28 03:12:10,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.80ms. Allocated memory is still 180.4MB. Free memory was 128.1MB in the beginning and 125.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:12:10,035 INFO L158 Benchmark]: Boogie Preprocessor took 50.08ms. Allocated memory is still 180.4MB. Free memory was 125.1MB in the beginning and 122.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:12:10,035 INFO L158 Benchmark]: RCFGBuilder took 601.78ms. Allocated memory is still 180.4MB. Free memory was 122.1MB in the beginning and 70.6MB in the end (delta: 51.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-06-28 03:12:10,036 INFO L158 Benchmark]: TraceAbstraction took 90612.39ms. Allocated memory was 180.4MB in the beginning and 847.2MB in the end (delta: 666.9MB). Free memory was 70.6MB in the beginning and 694.3MB in the end (delta: -623.7MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2024-06-28 03:12:10,036 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 90.2MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory was 146.7MB in the beginning and 146.7MB in the end (delta: 15.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 563.18ms. Allocated memory is still 180.4MB. Free memory was 108.8MB in the beginning and 128.1MB in the end (delta: -19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.80ms. Allocated memory is still 180.4MB. Free memory was 128.1MB in the beginning and 125.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.08ms. Allocated memory is still 180.4MB. Free memory was 125.1MB in the beginning and 122.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 601.78ms. Allocated memory is still 180.4MB. Free memory was 122.1MB in the beginning and 70.6MB in the end (delta: 51.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * TraceAbstraction took 90612.39ms. Allocated memory was 180.4MB in the beginning and 847.2MB in the end (delta: 666.9MB). Free memory was 70.6MB in the beginning and 694.3MB in the end (delta: -623.7MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: 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, 48 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: 90.5s, OverallIterations: 84, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5308 SdHoareTripleChecker+Valid, 17.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4497 mSDsluCounter, 3648 SdHoareTripleChecker+Invalid, 14.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3195 mSDsCounter, 1163 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29075 IncrementalHoareTripleChecker+Invalid, 30238 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1163 mSolverCounterUnsat, 453 mSDtfsCounter, 29075 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 917 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 914 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 23.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1500occurred in iteration=41, InterpolantAutomatonStates: 781, 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, 58.9s InterpolantComputationTime, 1288 NumberOfCodeBlocks, 1288 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 1204 ConstructedInterpolants, 0 QuantifiedInterpolants, 51517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 84 InterpolantComputations, 84 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! [2024-06-28 03:12:10,080 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