./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 --validate ./goblint.2024-05-07_14-17-48.files/protection/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 b44c8288 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.2024-05-07_14-17-48.files/protection/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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:13:07,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:13:08,036 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:13:08,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:13:08,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:13:08,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:13:08,073 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:13:08,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:13:08,074 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:13:08,077 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:13:08,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:13:08,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:13:08,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:13:08,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:13:08,079 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:13:08,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:13:08,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:13:08,080 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:13:08,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:13:08,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:13:08,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:13:08,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:13:08,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:13:08,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:13:08,081 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:13:08,082 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:13:08,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:13:08,082 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:13:08,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:13:08,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:13:08,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:13:08,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:13:08,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:13:08,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:13:08,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:13:08,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:13:08,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:13:08,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:13:08,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:13:08,085 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:13:08,085 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:13:08,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:13:08,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:13:08,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:13:08,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:13:08,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:13:08,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:13:08,327 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:13:08,327 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:13:08,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-05-12 13:13:08,470 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:13:08,470 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:13:08,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:13:09,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:13:09,791 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:13:09,792 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:13:09,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f280b9f51/51ba7688efe64349a3ea8eefcdeafe5a/FLAG90c09e967 [2024-05-12 13:13:09,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f280b9f51/51ba7688efe64349a3ea8eefcdeafe5a [2024-05-12 13:13:09,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:13:09,827 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:13:09,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:13:09,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:13:09,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:13:09,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:13:08" (1/2) ... [2024-05-12 13:13:09,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc01923 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:13:09, skipping insertion in model container [2024-05-12 13:13:09,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:13:08" (1/2) ... [2024-05-12 13:13:09,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@301c1bb1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:13:09, skipping insertion in model container [2024-05-12 13:13:09,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:13:09" (2/2) ... [2024-05-12 13:13:09,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc01923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:09, skipping insertion in model container [2024-05-12 13:13:09,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:13:09" (2/2) ... [2024-05-12 13:13:09,837 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:13:09,883 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:13:09,884 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-05-12 13:13:09,884 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-05-12 13:13:09,884 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:13:09,885 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-05-12 13:13:09,919 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:13:10,060 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[995,1008] [2024-05-12 13:13:10,259 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:13:10,267 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:13:10,297 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:13:10,358 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:13:10,393 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:13:10,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10 WrapperNode [2024-05-12 13:13:10,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:13:10,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:13:10,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:13:10,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:13:10,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,457 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-05-12 13:13:10,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:13:10,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:13:10,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:13:10,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:13:10,468 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,523 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 13:13:10,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:13:10,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:13:10,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:13:10,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:13:10,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (1/1) ... [2024-05-12 13:13:10,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:13:10,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:13:10,605 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) [2024-05-12 13:13:10,624 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 [2024-05-12 13:13:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:13:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:13:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:13:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:13:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:13:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:13:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:13:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:13:10,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:13:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:13:10,637 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:13:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:13:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:13:10,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:13:10,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:13:10,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:13:10,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:13:10,640 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:13:10,768 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:13:10,770 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:13:11,062 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:13:11,062 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:13:11,185 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:13:11,185 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:13:11,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:13:11 BoogieIcfgContainer [2024-05-12 13:13:11,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:13:11,189 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:13:11,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:13:11,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:13:11,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:13:08" (1/4) ... [2024-05-12 13:13:11,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7e43ef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:13:11, skipping insertion in model container [2024-05-12 13:13:11,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:13:09" (2/4) ... [2024-05-12 13:13:11,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7e43ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:13:11, skipping insertion in model container [2024-05-12 13:13:11,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:13:10" (3/4) ... [2024-05-12 13:13:11,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7e43ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:13:11, skipping insertion in model container [2024-05-12 13:13:11,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:13:11" (4/4) ... [2024-05-12 13:13:11,201 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:13:11,216 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:13:11,216 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 13:13:11,216 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:13:11,255 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:13:11,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-05-12 13:13:11,305 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-05-12 13:13:11,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:13:11,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-05-12 13:13:11,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-05-12 13:13:11,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-05-12 13:13:11,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:13:11,332 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;@375dd8ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:13:11,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 13:13:11,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:13:11,337 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:13:11,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:13:11,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:11,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:13:11,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:11,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1097637477, now seen corresponding path program 1 times [2024-05-12 13:13:11,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:11,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170359942] [2024-05-12 13:13:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:11,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:12,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:12,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170359942] [2024-05-12 13:13:12,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170359942] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:12,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:12,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:13:12,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068545244] [2024-05-12 13:13:12,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:12,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:13:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:13:12,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:13:12,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-05-12 13:13:12,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:12,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:12,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-05-12 13:13:12,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:12,422 INFO L124 PetriNetUnfolderBase]: 475/959 cut-off events. [2024-05-12 13:13:12,422 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-05-12 13:13:12,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 959 events. 475/959 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5383 event pairs, 334 based on Foata normal form. 36/897 useless extension candidates. Maximal degree in co-relation 1763. Up to 787 conditions per place. [2024-05-12 13:13:12,431 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 32 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-05-12 13:13:12,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 171 flow [2024-05-12 13:13:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:13:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:13:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-05-12 13:13:12,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6576576576576577 [2024-05-12 13:13:12,442 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 73 transitions. [2024-05-12 13:13:12,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 171 flow [2024-05-12 13:13:12,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:13:12,447 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-05-12 13:13:12,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-05-12 13:13:12,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-05-12 13:13:12,453 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-05-12 13:13:12,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:12,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:12,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:13:12,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:13:12,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:12,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:12,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1097638344, now seen corresponding path program 1 times [2024-05-12 13:13:12,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:12,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964223858] [2024-05-12 13:13:12,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:12,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:12,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:12,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964223858] [2024-05-12 13:13:12,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964223858] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:12,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:12,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:13:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129701249] [2024-05-12 13:13:12,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:12,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:13:12,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:12,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:13:12,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:13:12,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-05-12 13:13:12,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:12,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:12,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-05-12 13:13:12,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:12,661 INFO L124 PetriNetUnfolderBase]: 169/400 cut-off events. [2024-05-12 13:13:12,661 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-05-12 13:13:12,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 400 events. 169/400 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2112 event pairs, 96 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 756. Up to 256 conditions per place. [2024-05-12 13:13:12,663 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 25 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2024-05-12 13:13:12,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 175 flow [2024-05-12 13:13:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:13:12,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:13:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-05-12 13:13:12,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2024-05-12 13:13:12,667 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 3 states and 81 transitions. [2024-05-12 13:13:12,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 175 flow [2024-05-12 13:13:12,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:13:12,670 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 92 flow [2024-05-12 13:13:12,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-05-12 13:13:12,673 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-05-12 13:13:12,673 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 92 flow [2024-05-12 13:13:12,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:12,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:12,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:12,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:13:12,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:12,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1732301853, now seen corresponding path program 1 times [2024-05-12 13:13:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:12,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408314858] [2024-05-12 13:13:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:12,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:13,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408314858] [2024-05-12 13:13:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408314858] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:13,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:13,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:13:13,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437797701] [2024-05-12 13:13:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:13,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:13:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:13:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:13:13,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-05-12 13:13:13,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:13,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:13,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-05-12 13:13:13,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:13,326 INFO L124 PetriNetUnfolderBase]: 342/705 cut-off events. [2024-05-12 13:13:13,326 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-05-12 13:13:13,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 705 events. 342/705 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3684 event pairs, 164 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 1442. Up to 562 conditions per place. [2024-05-12 13:13:13,329 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 36 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-05-12 13:13:13,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 222 flow [2024-05-12 13:13:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:13:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:13:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-05-12 13:13:13,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-05-12 13:13:13,331 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 92 flow. Second operand 4 states and 86 transitions. [2024-05-12 13:13:13,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 222 flow [2024-05-12 13:13:13,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:13:13,332 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 135 flow [2024-05-12 13:13:13,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-05-12 13:13:13,333 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-05-12 13:13:13,333 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 135 flow [2024-05-12 13:13:13,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:13,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:13,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:13,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:13:13,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:13,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2133218670, now seen corresponding path program 1 times [2024-05-12 13:13:13,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:13,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551776115] [2024-05-12 13:13:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:13,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:13,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551776115] [2024-05-12 13:13:13,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551776115] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:13,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:13,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:13:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248270640] [2024-05-12 13:13:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:13,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:13:13,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:13:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:13:13,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:13:13,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:13,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:13,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:13:13,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:13,943 INFO L124 PetriNetUnfolderBase]: 418/832 cut-off events. [2024-05-12 13:13:13,943 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2024-05-12 13:13:13,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 832 events. 418/832 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4425 event pairs, 147 based on Foata normal form. 3/797 useless extension candidates. Maximal degree in co-relation 1865. Up to 629 conditions per place. [2024-05-12 13:13:13,947 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 48 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-05-12 13:13:13,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 345 flow [2024-05-12 13:13:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:13:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:13:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-05-12 13:13:13,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5837837837837838 [2024-05-12 13:13:13,948 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 135 flow. Second operand 5 states and 108 transitions. [2024-05-12 13:13:13,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 345 flow [2024-05-12 13:13:13,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 338 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 13:13:13,951 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 216 flow [2024-05-12 13:13:13,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-05-12 13:13:13,951 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-05-12 13:13:13,952 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 216 flow [2024-05-12 13:13:13,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:13,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:13,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:13,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:13:13,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:13,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1705270626, now seen corresponding path program 1 times [2024-05-12 13:13:13,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:13,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034457350] [2024-05-12 13:13:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:13,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:14,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:14,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034457350] [2024-05-12 13:13:14,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034457350] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:14,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:14,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:13:14,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828519414] [2024-05-12 13:13:14,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:13:14,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:14,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:13:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:13:14,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:13:14,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:14,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:14,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:13:14,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:14,735 INFO L124 PetriNetUnfolderBase]: 428/767 cut-off events. [2024-05-12 13:13:14,735 INFO L125 PetriNetUnfolderBase]: For 796/796 co-relation queries the response was YES. [2024-05-12 13:13:14,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 767 events. 428/767 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3813 event pairs, 77 based on Foata normal form. 3/759 useless extension candidates. Maximal degree in co-relation 2172. Up to 593 conditions per place. [2024-05-12 13:13:14,739 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 58 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2024-05-12 13:13:14,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 530 flow [2024-05-12 13:13:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:13:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:13:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-05-12 13:13:14,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-05-12 13:13:14,740 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 216 flow. Second operand 6 states and 129 transitions. [2024-05-12 13:13:14,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 530 flow [2024-05-12 13:13:14,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 526 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 13:13:14,744 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 364 flow [2024-05-12 13:13:14,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=364, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2024-05-12 13:13:14,744 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-05-12 13:13:14,745 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 364 flow [2024-05-12 13:13:14,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:14,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:14,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:14,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:13:14,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:14,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1256408285, now seen corresponding path program 1 times [2024-05-12 13:13:14,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:14,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552067941] [2024-05-12 13:13:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:14,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:15,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:15,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552067941] [2024-05-12 13:13:15,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552067941] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:15,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:15,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:13:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803311579] [2024-05-12 13:13:15,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:15,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:13:15,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:13:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:13:15,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:13:15,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 364 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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) [2024-05-12 13:13:15,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:15,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:13:15,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:15,669 INFO L124 PetriNetUnfolderBase]: 448/872 cut-off events. [2024-05-12 13:13:15,669 INFO L125 PetriNetUnfolderBase]: For 1614/1614 co-relation queries the response was YES. [2024-05-12 13:13:15,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2829 conditions, 872 events. 448/872 cut-off events. For 1614/1614 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4654 event pairs, 69 based on Foata normal form. 6/844 useless extension candidates. Maximal degree in co-relation 2801. Up to 606 conditions per place. [2024-05-12 13:13:15,674 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 70 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-05-12 13:13:15,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 677 flow [2024-05-12 13:13:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:13:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:13:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-05-12 13:13:15,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555984555984556 [2024-05-12 13:13:15,676 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 364 flow. Second operand 7 states and 144 transitions. [2024-05-12 13:13:15,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 677 flow [2024-05-12 13:13:15,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 96 transitions, 649 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-05-12 13:13:15,681 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 422 flow [2024-05-12 13:13:15,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-05-12 13:13:15,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-05-12 13:13:15,682 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 422 flow [2024-05-12 13:13:15,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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) [2024-05-12 13:13:15,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:15,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:15,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:13:15,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:15,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:15,683 INFO L85 PathProgramCache]: Analyzing trace with hash 536142295, now seen corresponding path program 1 times [2024-05-12 13:13:15,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:15,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442570988] [2024-05-12 13:13:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:15,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:16,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:16,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442570988] [2024-05-12 13:13:16,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442570988] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:16,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:16,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:13:16,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107342872] [2024-05-12 13:13:16,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:16,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:13:16,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:13:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:13:16,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:16,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:16,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:16,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:16,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:16,398 INFO L124 PetriNetUnfolderBase]: 524/1044 cut-off events. [2024-05-12 13:13:16,398 INFO L125 PetriNetUnfolderBase]: For 2091/2091 co-relation queries the response was YES. [2024-05-12 13:13:16,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 1044 events. 524/1044 cut-off events. For 2091/2091 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5702 event pairs, 157 based on Foata normal form. 1/1003 useless extension candidates. Maximal degree in co-relation 3337. Up to 856 conditions per place. [2024-05-12 13:13:16,405 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 57 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2024-05-12 13:13:16,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 580 flow [2024-05-12 13:13:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:13:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:13:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-05-12 13:13:16,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-05-12 13:13:16,406 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 422 flow. Second operand 5 states and 87 transitions. [2024-05-12 13:13:16,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 580 flow [2024-05-12 13:13:16,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 539 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:16,410 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 409 flow [2024-05-12 13:13:16,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-05-12 13:13:16,411 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-05-12 13:13:16,411 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 409 flow [2024-05-12 13:13:16,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:16,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:16,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:16,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:13:16,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:16,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash -560004808, now seen corresponding path program 1 times [2024-05-12 13:13:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:16,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951894660] [2024-05-12 13:13:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:16,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:16,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951894660] [2024-05-12 13:13:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951894660] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:16,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:16,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:13:16,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523911136] [2024-05-12 13:13:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:16,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:13:16,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:16,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:13:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:13:16,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:16,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 409 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:16,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:16,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:16,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:17,214 INFO L124 PetriNetUnfolderBase]: 518/995 cut-off events. [2024-05-12 13:13:17,215 INFO L125 PetriNetUnfolderBase]: For 1978/1978 co-relation queries the response was YES. [2024-05-12 13:13:17,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 995 events. 518/995 cut-off events. For 1978/1978 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5306 event pairs, 152 based on Foata normal form. 3/966 useless extension candidates. Maximal degree in co-relation 3146. Up to 814 conditions per place. [2024-05-12 13:13:17,220 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 64 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-05-12 13:13:17,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 613 flow [2024-05-12 13:13:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:13:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:13:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-05-12 13:13:17,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-05-12 13:13:17,222 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 409 flow. Second operand 6 states and 105 transitions. [2024-05-12 13:13:17,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 613 flow [2024-05-12 13:13:17,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 588 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:17,226 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 428 flow [2024-05-12 13:13:17,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-05-12 13:13:17,226 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-05-12 13:13:17,227 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 428 flow [2024-05-12 13:13:17,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:17,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:17,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:17,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:13:17,227 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:17,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:17,228 INFO L85 PathProgramCache]: Analyzing trace with hash -170692919, now seen corresponding path program 1 times [2024-05-12 13:13:17,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:17,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456125307] [2024-05-12 13:13:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:17,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:17,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:17,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456125307] [2024-05-12 13:13:17,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456125307] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:17,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:17,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:13:17,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787851790] [2024-05-12 13:13:17,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:17,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:13:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:13:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:13:17,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:17,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 428 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:17,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:17,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:17,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:17,951 INFO L124 PetriNetUnfolderBase]: 527/1003 cut-off events. [2024-05-12 13:13:17,951 INFO L125 PetriNetUnfolderBase]: For 2146/2146 co-relation queries the response was YES. [2024-05-12 13:13:17,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 1003 events. 527/1003 cut-off events. For 2146/2146 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5321 event pairs, 120 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 3338. Up to 785 conditions per place. [2024-05-12 13:13:17,957 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 65 selfloop transitions, 15 changer transitions 0/87 dead transitions. [2024-05-12 13:13:17,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 674 flow [2024-05-12 13:13:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:13:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:13:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-05-12 13:13:17,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-05-12 13:13:17,959 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 428 flow. Second operand 6 states and 110 transitions. [2024-05-12 13:13:17,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 674 flow [2024-05-12 13:13:17,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 650 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:17,963 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 463 flow [2024-05-12 13:13:17,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-05-12 13:13:17,964 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-05-12 13:13:17,964 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 463 flow [2024-05-12 13:13:17,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:17,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:17,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:17,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:13:17,965 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:17,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash -163306859, now seen corresponding path program 2 times [2024-05-12 13:13:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681748969] [2024-05-12 13:13:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:17,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:18,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:18,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681748969] [2024-05-12 13:13:18,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681748969] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:18,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:18,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:13:18,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876576961] [2024-05-12 13:13:18,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:18,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:13:18,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:13:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:13:18,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:18,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 463 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:18,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:18,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:18,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:18,705 INFO L124 PetriNetUnfolderBase]: 522/1020 cut-off events. [2024-05-12 13:13:18,705 INFO L125 PetriNetUnfolderBase]: For 2362/2362 co-relation queries the response was YES. [2024-05-12 13:13:18,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 1020 events. 522/1020 cut-off events. For 2362/2362 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5498 event pairs, 159 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 3370. Up to 848 conditions per place. [2024-05-12 13:13:18,711 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 64 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-05-12 13:13:18,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 645 flow [2024-05-12 13:13:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:13:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:13:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-05-12 13:13:18,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-05-12 13:13:18,712 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 463 flow. Second operand 6 states and 101 transitions. [2024-05-12 13:13:18,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 645 flow [2024-05-12 13:13:18,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 626 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-05-12 13:13:18,717 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 469 flow [2024-05-12 13:13:18,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-05-12 13:13:18,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2024-05-12 13:13:18,718 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 469 flow [2024-05-12 13:13:18,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:18,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:18,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:18,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:13:18,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:18,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash 220445462, now seen corresponding path program 1 times [2024-05-12 13:13:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:18,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549945087] [2024-05-12 13:13:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:18,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549945087] [2024-05-12 13:13:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549945087] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:19,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:19,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:13:19,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584465669] [2024-05-12 13:13:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:19,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:13:19,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:19,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:13:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:13:19,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:19,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:19,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:19,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:19,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:19,548 INFO L124 PetriNetUnfolderBase]: 646/1187 cut-off events. [2024-05-12 13:13:19,548 INFO L125 PetriNetUnfolderBase]: For 3087/3087 co-relation queries the response was YES. [2024-05-12 13:13:19,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 1187 events. 646/1187 cut-off events. For 3087/3087 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6371 event pairs, 151 based on Foata normal form. 6/1159 useless extension candidates. Maximal degree in co-relation 3931. Up to 777 conditions per place. [2024-05-12 13:13:19,554 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 78 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2024-05-12 13:13:19,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 105 transitions, 799 flow [2024-05-12 13:13:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:13:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:13:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-05-12 13:13:19,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-05-12 13:13:19,556 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 469 flow. Second operand 7 states and 133 transitions. [2024-05-12 13:13:19,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 105 transitions, 799 flow [2024-05-12 13:13:19,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 757 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:19,561 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 529 flow [2024-05-12 13:13:19,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-05-12 13:13:19,562 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2024-05-12 13:13:19,562 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 529 flow [2024-05-12 13:13:19,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:19,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:19,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:19,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:13:19,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:19,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash -767544332, now seen corresponding path program 2 times [2024-05-12 13:13:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627904013] [2024-05-12 13:13:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:19,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:20,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:20,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627904013] [2024-05-12 13:13:20,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627904013] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:20,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:20,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:13:20,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814153589] [2024-05-12 13:13:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:20,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:13:20,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:13:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:13:20,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:20,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 529 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:20,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:20,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:20,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:20,391 INFO L124 PetriNetUnfolderBase]: 679/1295 cut-off events. [2024-05-12 13:13:20,392 INFO L125 PetriNetUnfolderBase]: For 3751/3751 co-relation queries the response was YES. [2024-05-12 13:13:20,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 1295 events. 679/1295 cut-off events. For 3751/3751 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7257 event pairs, 191 based on Foata normal form. 3/1253 useless extension candidates. Maximal degree in co-relation 4596. Up to 1015 conditions per place. [2024-05-12 13:13:20,399 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 80 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-05-12 13:13:20,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 835 flow [2024-05-12 13:13:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:13:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:13:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-05-12 13:13:20,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876447876447875 [2024-05-12 13:13:20,400 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 529 flow. Second operand 7 states and 124 transitions. [2024-05-12 13:13:20,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 835 flow [2024-05-12 13:13:20,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 103 transitions, 820 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 13:13:20,410 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 583 flow [2024-05-12 13:13:20,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=583, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-05-12 13:13:20,411 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-05-12 13:13:20,411 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 583 flow [2024-05-12 13:13:20,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:20,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:20,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:20,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:13:20,412 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:20,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:20,412 INFO L85 PathProgramCache]: Analyzing trace with hash 426442322, now seen corresponding path program 3 times [2024-05-12 13:13:20,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:20,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010093609] [2024-05-12 13:13:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:20,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:20,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010093609] [2024-05-12 13:13:20,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010093609] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:20,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:20,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:13:20,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033729058] [2024-05-12 13:13:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:20,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:13:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:20,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:13:20,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:13:20,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:20,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 583 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:20,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:20,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:20,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:21,237 INFO L124 PetriNetUnfolderBase]: 673/1298 cut-off events. [2024-05-12 13:13:21,238 INFO L125 PetriNetUnfolderBase]: For 4181/4181 co-relation queries the response was YES. [2024-05-12 13:13:21,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 1298 events. 673/1298 cut-off events. For 4181/4181 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7349 event pairs, 195 based on Foata normal form. 3/1253 useless extension candidates. Maximal degree in co-relation 4648. Up to 1053 conditions per place. [2024-05-12 13:13:21,246 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 78 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2024-05-12 13:13:21,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 813 flow [2024-05-12 13:13:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:13:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:13:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-05-12 13:13:21,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-05-12 13:13:21,247 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 583 flow. Second operand 7 states and 118 transitions. [2024-05-12 13:13:21,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 813 flow [2024-05-12 13:13:21,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 98 transitions, 783 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 13:13:21,254 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 584 flow [2024-05-12 13:13:21,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=584, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2024-05-12 13:13:21,254 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-05-12 13:13:21,255 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 584 flow [2024-05-12 13:13:21,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:21,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:21,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:21,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:13:21,255 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:21,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1178069810, now seen corresponding path program 1 times [2024-05-12 13:13:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:21,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199501238] [2024-05-12 13:13:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:21,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199501238] [2024-05-12 13:13:21,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199501238] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:21,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:21,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:13:21,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429340542] [2024-05-12 13:13:21,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:21,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:13:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:21,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:13:21,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:13:22,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:22,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 584 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:22,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:22,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:22,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:22,414 INFO L124 PetriNetUnfolderBase]: 674/1248 cut-off events. [2024-05-12 13:13:22,415 INFO L125 PetriNetUnfolderBase]: For 4042/4042 co-relation queries the response was YES. [2024-05-12 13:13:22,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4638 conditions, 1248 events. 674/1248 cut-off events. For 4042/4042 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6859 event pairs, 144 based on Foata normal form. 1/1209 useless extension candidates. Maximal degree in co-relation 4597. Up to 968 conditions per place. [2024-05-12 13:13:22,429 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 86 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-05-12 13:13:22,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 113 transitions, 900 flow [2024-05-12 13:13:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-05-12 13:13:22,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-05-12 13:13:22,430 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 584 flow. Second operand 8 states and 145 transitions. [2024-05-12 13:13:22,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 113 transitions, 900 flow [2024-05-12 13:13:22,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 113 transitions, 863 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:22,441 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 607 flow [2024-05-12 13:13:22,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=607, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-05-12 13:13:22,441 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-05-12 13:13:22,442 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 607 flow [2024-05-12 13:13:22,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:22,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:22,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:22,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:13:22,442 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:22,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1181792755, now seen corresponding path program 1 times [2024-05-12 13:13:22,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:22,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331972237] [2024-05-12 13:13:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:22,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:22,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:22,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331972237] [2024-05-12 13:13:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331972237] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:22,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:22,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:13:22,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655684738] [2024-05-12 13:13:22,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:22,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:13:22,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:22,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:13:22,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:13:23,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:23,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 607 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:23,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:23,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:23,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:23,462 INFO L124 PetriNetUnfolderBase]: 707/1298 cut-off events. [2024-05-12 13:13:23,462 INFO L125 PetriNetUnfolderBase]: For 4667/4667 co-relation queries the response was YES. [2024-05-12 13:13:23,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4942 conditions, 1298 events. 707/1298 cut-off events. For 4667/4667 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7158 event pairs, 153 based on Foata normal form. 3/1263 useless extension candidates. Maximal degree in co-relation 4900. Up to 808 conditions per place. [2024-05-12 13:13:23,470 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 83 selfloop transitions, 27 changer transitions 0/117 dead transitions. [2024-05-12 13:13:23,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 117 transitions, 965 flow [2024-05-12 13:13:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:13:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:13:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-05-12 13:13:23,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328185328185329 [2024-05-12 13:13:23,472 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 607 flow. Second operand 7 states and 138 transitions. [2024-05-12 13:13:23,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 117 transitions, 965 flow [2024-05-12 13:13:23,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 117 transitions, 923 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:23,480 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 638 flow [2024-05-12 13:13:23,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=638, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2024-05-12 13:13:23,481 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-05-12 13:13:23,481 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 638 flow [2024-05-12 13:13:23,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:23,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:23,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:23,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:13:23,482 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:23,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:23,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1684791303, now seen corresponding path program 2 times [2024-05-12 13:13:23,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:23,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30445180] [2024-05-12 13:13:23,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:23,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30445180] [2024-05-12 13:13:24,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30445180] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:24,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:24,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:24,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001062848] [2024-05-12 13:13:24,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:24,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:24,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:24,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:24,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 638 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:13:24,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:24,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:24,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:24,556 INFO L124 PetriNetUnfolderBase]: 740/1343 cut-off events. [2024-05-12 13:13:24,557 INFO L125 PetriNetUnfolderBase]: For 5437/5437 co-relation queries the response was YES. [2024-05-12 13:13:24,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5285 conditions, 1343 events. 740/1343 cut-off events. For 5437/5437 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7372 event pairs, 171 based on Foata normal form. 3/1310 useless extension candidates. Maximal degree in co-relation 5242. Up to 832 conditions per place. [2024-05-12 13:13:24,566 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 88 selfloop transitions, 26 changer transitions 0/121 dead transitions. [2024-05-12 13:13:24,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 1018 flow [2024-05-12 13:13:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-05-12 13:13:24,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-05-12 13:13:24,568 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 638 flow. Second operand 8 states and 151 transitions. [2024-05-12 13:13:24,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 1018 flow [2024-05-12 13:13:24,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 121 transitions, 950 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-05-12 13:13:24,578 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 645 flow [2024-05-12 13:13:24,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=645, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2024-05-12 13:13:24,579 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-05-12 13:13:24,579 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 645 flow [2024-05-12 13:13:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:13:24,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:24,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:24,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:13:24,580 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:24,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1984175679, now seen corresponding path program 3 times [2024-05-12 13:13:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560055964] [2024-05-12 13:13:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:25,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:25,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560055964] [2024-05-12 13:13:25,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560055964] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:25,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:25,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288007349] [2024-05-12 13:13:25,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:25,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:25,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:25,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:25,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:25,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 645 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:13:25,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:25,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:25,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:25,556 INFO L124 PetriNetUnfolderBase]: 773/1453 cut-off events. [2024-05-12 13:13:25,557 INFO L125 PetriNetUnfolderBase]: For 5925/5925 co-relation queries the response was YES. [2024-05-12 13:13:25,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5548 conditions, 1453 events. 773/1453 cut-off events. For 5925/5925 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8416 event pairs, 231 based on Foata normal form. 3/1408 useless extension candidates. Maximal degree in co-relation 5504. Up to 1163 conditions per place. [2024-05-12 13:13:25,565 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 91 selfloop transitions, 15 changer transitions 0/113 dead transitions. [2024-05-12 13:13:25,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 113 transitions, 943 flow [2024-05-12 13:13:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-05-12 13:13:25,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:13:25,566 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 645 flow. Second operand 8 states and 136 transitions. [2024-05-12 13:13:25,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 113 transitions, 943 flow [2024-05-12 13:13:25,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 113 transitions, 901 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 13:13:25,580 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 658 flow [2024-05-12 13:13:25,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-05-12 13:13:25,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-05-12 13:13:25,581 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 658 flow [2024-05-12 13:13:25,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:13:25,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:25,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:25,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:13:25,582 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:25,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash 326565529, now seen corresponding path program 4 times [2024-05-12 13:13:25,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:25,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890300284] [2024-05-12 13:13:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:25,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:26,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:26,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890300284] [2024-05-12 13:13:26,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890300284] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:26,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:26,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:26,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863826193] [2024-05-12 13:13:26,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:26,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:26,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:26,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 658 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:13:26,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:26,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:26,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:26,656 INFO L124 PetriNetUnfolderBase]: 767/1441 cut-off events. [2024-05-12 13:13:26,656 INFO L125 PetriNetUnfolderBase]: For 6083/6083 co-relation queries the response was YES. [2024-05-12 13:13:26,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5409 conditions, 1441 events. 767/1441 cut-off events. For 6083/6083 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8317 event pairs, 211 based on Foata normal form. 3/1396 useless extension candidates. Maximal degree in co-relation 5364. Up to 1112 conditions per place. [2024-05-12 13:13:26,662 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 92 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2024-05-12 13:13:26,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 117 transitions, 964 flow [2024-05-12 13:13:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 13:13:26,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-05-12 13:13:26,664 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 658 flow. Second operand 8 states and 141 transitions. [2024-05-12 13:13:26,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 117 transitions, 964 flow [2024-05-12 13:13:26,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 117 transitions, 931 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:26,675 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 666 flow [2024-05-12 13:13:26,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-05-12 13:13:26,675 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-05-12 13:13:26,675 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 666 flow [2024-05-12 13:13:26,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:13:26,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:26,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:26,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:13:26,676 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:26,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:26,676 INFO L85 PathProgramCache]: Analyzing trace with hash 335106866, now seen corresponding path program 1 times [2024-05-12 13:13:26,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:26,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54844607] [2024-05-12 13:13:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:27,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:27,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54844607] [2024-05-12 13:13:27,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54844607] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:27,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:27,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:27,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966601453] [2024-05-12 13:13:27,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:27,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:27,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:27,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:27,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:27,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:27,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 666 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:13:27,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:27,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:27,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:27,763 INFO L124 PetriNetUnfolderBase]: 769/1432 cut-off events. [2024-05-12 13:13:27,764 INFO L125 PetriNetUnfolderBase]: For 6308/6308 co-relation queries the response was YES. [2024-05-12 13:13:27,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 1432 events. 769/1432 cut-off events. For 6308/6308 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8184 event pairs, 221 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 5406. Up to 1196 conditions per place. [2024-05-12 13:13:27,771 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 91 selfloop transitions, 16 changer transitions 0/114 dead transitions. [2024-05-12 13:13:27,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 114 transitions, 968 flow [2024-05-12 13:13:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-05-12 13:13:27,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-05-12 13:13:27,774 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 666 flow. Second operand 8 states and 133 transitions. [2024-05-12 13:13:27,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 114 transitions, 968 flow [2024-05-12 13:13:27,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 114 transitions, 899 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-05-12 13:13:27,785 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 684 flow [2024-05-12 13:13:27,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2024-05-12 13:13:27,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-05-12 13:13:27,785 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 684 flow [2024-05-12 13:13:27,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:13:27,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:27,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:27,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:13:27,786 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:27,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:27,787 INFO L85 PathProgramCache]: Analyzing trace with hash 335117747, now seen corresponding path program 1 times [2024-05-12 13:13:27,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:27,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52897974] [2024-05-12 13:13:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:27,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:28,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:28,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52897974] [2024-05-12 13:13:28,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52897974] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:28,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:28,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:28,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080508536] [2024-05-12 13:13:28,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:28,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:28,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:28,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:28,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:28,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:28,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 684 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:28,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:28,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:28,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:29,229 INFO L124 PetriNetUnfolderBase]: 766/1435 cut-off events. [2024-05-12 13:13:29,229 INFO L125 PetriNetUnfolderBase]: For 6270/6270 co-relation queries the response was YES. [2024-05-12 13:13:29,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5419 conditions, 1435 events. 766/1435 cut-off events. For 6270/6270 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8280 event pairs, 215 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 5371. Up to 1175 conditions per place. [2024-05-12 13:13:29,237 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 94 selfloop transitions, 19 changer transitions 0/120 dead transitions. [2024-05-12 13:13:29,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 120 transitions, 986 flow [2024-05-12 13:13:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-05-12 13:13:29,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-05-12 13:13:29,238 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 684 flow. Second operand 8 states and 135 transitions. [2024-05-12 13:13:29,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 120 transitions, 986 flow [2024-05-12 13:13:29,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 120 transitions, 939 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 13:13:29,250 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 702 flow [2024-05-12 13:13:29,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=702, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2024-05-12 13:13:29,251 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-05-12 13:13:29,251 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 702 flow [2024-05-12 13:13:29,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:29,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:29,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:29,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:13:29,252 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:29,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:29,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2137224657, now seen corresponding path program 1 times [2024-05-12 13:13:29,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:29,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561506436] [2024-05-12 13:13:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:29,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:29,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:29,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561506436] [2024-05-12 13:13:29,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561506436] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:29,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:29,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:29,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404609006] [2024-05-12 13:13:29,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:29,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:29,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:29,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:29,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:29,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 702 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:29,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:29,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:29,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:30,278 INFO L124 PetriNetUnfolderBase]: 786/1465 cut-off events. [2024-05-12 13:13:30,278 INFO L125 PetriNetUnfolderBase]: For 6976/6976 co-relation queries the response was YES. [2024-05-12 13:13:30,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 1465 events. 786/1465 cut-off events. For 6976/6976 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8421 event pairs, 141 based on Foata normal form. 2/1416 useless extension candidates. Maximal degree in co-relation 5550. Up to 1038 conditions per place. [2024-05-12 13:13:30,286 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 104 selfloop transitions, 20 changer transitions 0/131 dead transitions. [2024-05-12 13:13:30,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 131 transitions, 1112 flow [2024-05-12 13:13:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 13:13:30,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-05-12 13:13:30,290 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 702 flow. Second operand 8 states and 146 transitions. [2024-05-12 13:13:30,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 131 transitions, 1112 flow [2024-05-12 13:13:30,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 131 transitions, 1060 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:30,306 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 712 flow [2024-05-12 13:13:30,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=712, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2024-05-12 13:13:30,306 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-05-12 13:13:30,307 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 712 flow [2024-05-12 13:13:30,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:30,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:30,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:30,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:13:30,308 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:30,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2137221743, now seen corresponding path program 1 times [2024-05-12 13:13:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:30,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238076084] [2024-05-12 13:13:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:30,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:30,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238076084] [2024-05-12 13:13:30,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238076084] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:30,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:30,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:30,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450079177] [2024-05-12 13:13:30,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:30,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:30,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:30,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:30,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:31,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:31,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 712 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:31,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:31,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:31,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:31,488 INFO L124 PetriNetUnfolderBase]: 848/1536 cut-off events. [2024-05-12 13:13:31,488 INFO L125 PetriNetUnfolderBase]: For 8049/8049 co-relation queries the response was YES. [2024-05-12 13:13:31,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6010 conditions, 1536 events. 848/1536 cut-off events. For 8049/8049 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8739 event pairs, 183 based on Foata normal form. 3/1498 useless extension candidates. Maximal degree in co-relation 5960. Up to 790 conditions per place. [2024-05-12 13:13:31,498 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 106 selfloop transitions, 38 changer transitions 0/151 dead transitions. [2024-05-12 13:13:31,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 151 transitions, 1240 flow [2024-05-12 13:13:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:13:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:13:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-05-12 13:13:31,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-05-12 13:13:31,499 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 712 flow. Second operand 10 states and 190 transitions. [2024-05-12 13:13:31,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 151 transitions, 1240 flow [2024-05-12 13:13:31,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 151 transitions, 1211 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:31,517 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 824 flow [2024-05-12 13:13:31,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=824, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-05-12 13:13:31,517 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-05-12 13:13:31,517 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 824 flow [2024-05-12 13:13:31,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:31,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:31,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:31,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:13:31,518 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:31,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:31,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1276452155, now seen corresponding path program 2 times [2024-05-12 13:13:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:31,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186360993] [2024-05-12 13:13:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:32,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:32,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186360993] [2024-05-12 13:13:32,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186360993] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:32,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:32,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:32,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001965802] [2024-05-12 13:13:32,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:32,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:32,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:32,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:32,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:32,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 824 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:32,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:32,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:32,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:32,674 INFO L124 PetriNetUnfolderBase]: 845/1557 cut-off events. [2024-05-12 13:13:32,675 INFO L125 PetriNetUnfolderBase]: For 8811/8811 co-relation queries the response was YES. [2024-05-12 13:13:32,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6535 conditions, 1557 events. 845/1557 cut-off events. For 8811/8811 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9006 event pairs, 200 based on Foata normal form. 2/1507 useless extension candidates. Maximal degree in co-relation 6482. Up to 1216 conditions per place. [2024-05-12 13:13:32,683 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 112 selfloop transitions, 21 changer transitions 0/140 dead transitions. [2024-05-12 13:13:32,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 140 transitions, 1212 flow [2024-05-12 13:13:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 13:13:32,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-05-12 13:13:32,684 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 824 flow. Second operand 9 states and 161 transitions. [2024-05-12 13:13:32,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 140 transitions, 1212 flow [2024-05-12 13:13:32,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 140 transitions, 1153 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:32,703 INFO L231 Difference]: Finished difference. Result has 113 places, 102 transitions, 811 flow [2024-05-12 13:13:32,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=811, PETRI_PLACES=113, PETRI_TRANSITIONS=102} [2024-05-12 13:13:32,703 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-05-12 13:13:32,703 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 102 transitions, 811 flow [2024-05-12 13:13:32,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:32,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:32,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:32,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:13:32,704 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:32,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1394539959, now seen corresponding path program 2 times [2024-05-12 13:13:32,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:32,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012801977] [2024-05-12 13:13:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:32,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:33,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:33,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012801977] [2024-05-12 13:13:33,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012801977] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:33,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:33,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:33,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732904407] [2024-05-12 13:13:33,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:33,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:33,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:33,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:33,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:33,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 102 transitions, 811 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:33,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:33,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:33,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:33,876 INFO L124 PetriNetUnfolderBase]: 878/1592 cut-off events. [2024-05-12 13:13:33,876 INFO L125 PetriNetUnfolderBase]: For 9317/9317 co-relation queries the response was YES. [2024-05-12 13:13:33,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6754 conditions, 1592 events. 878/1592 cut-off events. For 9317/9317 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9139 event pairs, 146 based on Foata normal form. 3/1549 useless extension candidates. Maximal degree in co-relation 6699. Up to 877 conditions per place. [2024-05-12 13:13:33,885 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 107 selfloop transitions, 40 changer transitions 0/154 dead transitions. [2024-05-12 13:13:33,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 154 transitions, 1344 flow [2024-05-12 13:13:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-05-12 13:13:33,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375375375375375 [2024-05-12 13:13:33,909 INFO L175 Difference]: Start difference. First operand has 113 places, 102 transitions, 811 flow. Second operand 9 states and 179 transitions. [2024-05-12 13:13:33,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 154 transitions, 1344 flow [2024-05-12 13:13:33,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 1297 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 13:13:33,931 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 876 flow [2024-05-12 13:13:33,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=876, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2024-05-12 13:13:33,932 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-05-12 13:13:33,932 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 876 flow [2024-05-12 13:13:33,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:33,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:33,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:33,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:13:33,933 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:33,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:33,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2018956433, now seen corresponding path program 3 times [2024-05-12 13:13:33,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:33,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130946497] [2024-05-12 13:13:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:33,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:34,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:34,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130946497] [2024-05-12 13:13:34,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130946497] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:34,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:34,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:34,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963217950] [2024-05-12 13:13:34,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:34,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:34,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:34,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:34,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:34,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:34,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 876 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:34,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:34,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:34,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:35,197 INFO L124 PetriNetUnfolderBase]: 911/1651 cut-off events. [2024-05-12 13:13:35,197 INFO L125 PetriNetUnfolderBase]: For 10580/10580 co-relation queries the response was YES. [2024-05-12 13:13:35,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7276 conditions, 1651 events. 911/1651 cut-off events. For 10580/10580 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9532 event pairs, 187 based on Foata normal form. 3/1606 useless extension candidates. Maximal degree in co-relation 7220. Up to 1041 conditions per place. [2024-05-12 13:13:35,209 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 111 selfloop transitions, 31 changer transitions 0/149 dead transitions. [2024-05-12 13:13:35,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 149 transitions, 1341 flow [2024-05-12 13:13:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-05-12 13:13:35,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-05-12 13:13:35,211 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 876 flow. Second operand 9 states and 168 transitions. [2024-05-12 13:13:35,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 149 transitions, 1341 flow [2024-05-12 13:13:35,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 149 transitions, 1249 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 13:13:35,237 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 889 flow [2024-05-12 13:13:35,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=889, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2024-05-12 13:13:35,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-05-12 13:13:35,238 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 889 flow [2024-05-12 13:13:35,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:35,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:35,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:35,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:13:35,239 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:35,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1124297971, now seen corresponding path program 4 times [2024-05-12 13:13:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:35,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950128897] [2024-05-12 13:13:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:35,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:36,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:36,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950128897] [2024-05-12 13:13:36,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950128897] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:36,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:36,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:36,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822727294] [2024-05-12 13:13:36,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:36,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:36,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:36,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:36,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:36,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 889 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:36,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:36,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:36,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:36,558 INFO L124 PetriNetUnfolderBase]: 944/1732 cut-off events. [2024-05-12 13:13:36,559 INFO L125 PetriNetUnfolderBase]: For 11117/11117 co-relation queries the response was YES. [2024-05-12 13:13:36,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7480 conditions, 1732 events. 944/1732 cut-off events. For 11117/11117 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10256 event pairs, 255 based on Foata normal form. 3/1684 useless extension candidates. Maximal degree in co-relation 7423. Up to 1352 conditions per place. [2024-05-12 13:13:36,574 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 119 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-05-12 13:13:36,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 147 transitions, 1330 flow [2024-05-12 13:13:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-05-12 13:13:36,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-05-12 13:13:36,576 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 889 flow. Second operand 9 states and 159 transitions. [2024-05-12 13:13:36,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 147 transitions, 1330 flow [2024-05-12 13:13:36,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 147 transitions, 1264 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 13:13:36,615 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 908 flow [2024-05-12 13:13:36,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=908, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2024-05-12 13:13:36,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-05-12 13:13:36,616 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 908 flow [2024-05-12 13:13:36,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:36,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:36,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:36,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:13:36,616 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:36,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1976845151, now seen corresponding path program 1 times [2024-05-12 13:13:36,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:36,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594380233] [2024-05-12 13:13:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:36,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:37,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:37,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594380233] [2024-05-12 13:13:37,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594380233] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:37,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:37,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:37,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459489698] [2024-05-12 13:13:37,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:37,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:37,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:37,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:37,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:37,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:37,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 908 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:37,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:37,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:37,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:38,098 INFO L124 PetriNetUnfolderBase]: 952/1737 cut-off events. [2024-05-12 13:13:38,098 INFO L125 PetriNetUnfolderBase]: For 10854/10854 co-relation queries the response was YES. [2024-05-12 13:13:38,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 1737 events. 952/1737 cut-off events. For 10854/10854 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10258 event pairs, 281 based on Foata normal form. 2/1690 useless extension candidates. Maximal degree in co-relation 7367. Up to 1427 conditions per place. [2024-05-12 13:13:38,108 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 116 selfloop transitions, 24 changer transitions 0/147 dead transitions. [2024-05-12 13:13:38,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 147 transitions, 1308 flow [2024-05-12 13:13:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-05-12 13:13:38,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-05-12 13:13:38,110 INFO L175 Difference]: Start difference. First operand has 118 places, 111 transitions, 908 flow. Second operand 9 states and 154 transitions. [2024-05-12 13:13:38,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 147 transitions, 1308 flow [2024-05-12 13:13:38,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 147 transitions, 1256 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 13:13:38,136 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 960 flow [2024-05-12 13:13:38,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=960, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2024-05-12 13:13:38,137 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-05-12 13:13:38,137 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 960 flow [2024-05-12 13:13:38,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:38,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:38,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:38,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:13:38,138 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:38,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1986019787, now seen corresponding path program 5 times [2024-05-12 13:13:38,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:38,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332499585] [2024-05-12 13:13:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:38,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:38,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332499585] [2024-05-12 13:13:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332499585] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:38,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:38,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:38,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948878898] [2024-05-12 13:13:38,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:38,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:38,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:38,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:38,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:38,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 960 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:38,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:38,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:38,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:39,369 INFO L124 PetriNetUnfolderBase]: 959/1770 cut-off events. [2024-05-12 13:13:39,369 INFO L125 PetriNetUnfolderBase]: For 10965/10965 co-relation queries the response was YES. [2024-05-12 13:13:39,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7510 conditions, 1770 events. 959/1770 cut-off events. For 10965/10965 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10594 event pairs, 287 based on Foata normal form. 1/1717 useless extension candidates. Maximal degree in co-relation 7450. Up to 1485 conditions per place. [2024-05-12 13:13:39,380 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 123 selfloop transitions, 24 changer transitions 0/154 dead transitions. [2024-05-12 13:13:39,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 154 transitions, 1427 flow [2024-05-12 13:13:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-05-12 13:13:39,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-05-12 13:13:39,381 INFO L175 Difference]: Start difference. First operand has 121 places, 115 transitions, 960 flow. Second operand 9 states and 151 transitions. [2024-05-12 13:13:39,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 154 transitions, 1427 flow [2024-05-12 13:13:39,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 154 transitions, 1376 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-05-12 13:13:39,408 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 1076 flow [2024-05-12 13:13:39,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1076, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-05-12 13:13:39,409 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-05-12 13:13:39,409 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 1076 flow [2024-05-12 13:13:39,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:39,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:39,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:39,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:13:39,410 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:39,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:39,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1670199867, now seen corresponding path program 1 times [2024-05-12 13:13:39,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:39,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940033776] [2024-05-12 13:13:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:39,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:39,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940033776] [2024-05-12 13:13:39,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940033776] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:39,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:13:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508495696] [2024-05-12 13:13:39,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:39,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:13:39,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:13:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:13:39,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-05-12 13:13:39,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 1076 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:39,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:39,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-05-12 13:13:39,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:39,595 INFO L124 PetriNetUnfolderBase]: 408/849 cut-off events. [2024-05-12 13:13:39,595 INFO L125 PetriNetUnfolderBase]: For 6326/6358 co-relation queries the response was YES. [2024-05-12 13:13:39,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 849 events. 408/849 cut-off events. For 6326/6358 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4688 event pairs, 116 based on Foata normal form. 79/863 useless extension candidates. Maximal degree in co-relation 3449. Up to 253 conditions per place. [2024-05-12 13:13:39,600 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 54 selfloop transitions, 27 changer transitions 0/112 dead transitions. [2024-05-12 13:13:39,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 112 transitions, 1068 flow [2024-05-12 13:13:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:13:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:13:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-05-12 13:13:39,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6554054054054054 [2024-05-12 13:13:39,601 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 1076 flow. Second operand 4 states and 97 transitions. [2024-05-12 13:13:39,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 112 transitions, 1068 flow [2024-05-12 13:13:39,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 112 transitions, 919 flow, removed 28 selfloop flow, removed 21 redundant places. [2024-05-12 13:13:39,617 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 799 flow [2024-05-12 13:13:39,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=799, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2024-05-12 13:13:39,619 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-05-12 13:13:39,619 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 799 flow [2024-05-12 13:13:39,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:39,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:39,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:39,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:13:39,620 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:39,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1816425968, now seen corresponding path program 1 times [2024-05-12 13:13:39,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:39,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283871459] [2024-05-12 13:13:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:39,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:40,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:40,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283871459] [2024-05-12 13:13:40,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283871459] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:40,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:40,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:40,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466355771] [2024-05-12 13:13:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:40,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:40,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:40,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:40,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 799 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:40,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:40,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:40,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:40,670 INFO L124 PetriNetUnfolderBase]: 784/1487 cut-off events. [2024-05-12 13:13:40,670 INFO L125 PetriNetUnfolderBase]: For 11655/11655 co-relation queries the response was YES. [2024-05-12 13:13:40,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 1487 events. 784/1487 cut-off events. For 11655/11655 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8244 event pairs, 170 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 6294. Up to 884 conditions per place. [2024-05-12 13:13:40,680 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 134 selfloop transitions, 42 changer transitions 0/184 dead transitions. [2024-05-12 13:13:40,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 184 transitions, 1736 flow [2024-05-12 13:13:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:40,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 13:13:40,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-05-12 13:13:40,681 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 799 flow. Second operand 9 states and 160 transitions. [2024-05-12 13:13:40,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 184 transitions, 1736 flow [2024-05-12 13:13:40,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 184 transitions, 1728 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-05-12 13:13:40,714 INFO L231 Difference]: Finished difference. Result has 122 places, 124 transitions, 1144 flow [2024-05-12 13:13:40,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1144, PETRI_PLACES=122, PETRI_TRANSITIONS=124} [2024-05-12 13:13:40,715 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-05-12 13:13:40,715 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 124 transitions, 1144 flow [2024-05-12 13:13:40,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:40,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:40,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:40,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:13:40,715 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:40,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:40,716 INFO L85 PathProgramCache]: Analyzing trace with hash -29444298, now seen corresponding path program 2 times [2024-05-12 13:13:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:40,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641567560] [2024-05-12 13:13:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:40,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:41,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641567560] [2024-05-12 13:13:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641567560] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:41,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:41,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:41,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489626804] [2024-05-12 13:13:41,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:41,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:41,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:41,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:41,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:41,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 124 transitions, 1144 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:41,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:41,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:41,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:41,919 INFO L124 PetriNetUnfolderBase]: 925/1758 cut-off events. [2024-05-12 13:13:41,920 INFO L125 PetriNetUnfolderBase]: For 18946/18951 co-relation queries the response was YES. [2024-05-12 13:13:41,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8198 conditions, 1758 events. 925/1758 cut-off events. For 18946/18951 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10152 event pairs, 154 based on Foata normal form. 7/1673 useless extension candidates. Maximal degree in co-relation 8136. Up to 605 conditions per place. [2024-05-12 13:13:41,929 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 97 selfloop transitions, 63 changer transitions 0/168 dead transitions. [2024-05-12 13:13:41,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 168 transitions, 1756 flow [2024-05-12 13:13:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-05-12 13:13:41,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-05-12 13:13:41,931 INFO L175 Difference]: Start difference. First operand has 122 places, 124 transitions, 1144 flow. Second operand 9 states and 166 transitions. [2024-05-12 13:13:41,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 168 transitions, 1756 flow [2024-05-12 13:13:41,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 168 transitions, 1731 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 13:13:41,968 INFO L231 Difference]: Finished difference. Result has 129 places, 125 transitions, 1263 flow [2024-05-12 13:13:41,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1263, PETRI_PLACES=129, PETRI_TRANSITIONS=125} [2024-05-12 13:13:41,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-05-12 13:13:41,969 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 125 transitions, 1263 flow [2024-05-12 13:13:41,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:41,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:41,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:41,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:13:41,970 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:41,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash 915312142, now seen corresponding path program 3 times [2024-05-12 13:13:41,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:41,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917389872] [2024-05-12 13:13:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:41,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:42,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:42,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917389872] [2024-05-12 13:13:42,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917389872] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:42,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:42,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:42,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793438248] [2024-05-12 13:13:42,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:42,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:42,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:42,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:42,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 125 transitions, 1263 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:42,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:42,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:42,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:43,389 INFO L124 PetriNetUnfolderBase]: 1123/2265 cut-off events. [2024-05-12 13:13:43,390 INFO L125 PetriNetUnfolderBase]: For 29784/29792 co-relation queries the response was YES. [2024-05-12 13:13:43,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10592 conditions, 2265 events. 1123/2265 cut-off events. For 29784/29792 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14673 event pairs, 330 based on Foata normal form. 12/2152 useless extension candidates. Maximal degree in co-relation 10528. Up to 1140 conditions per place. [2024-05-12 13:13:43,403 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 102 selfloop transitions, 66 changer transitions 0/176 dead transitions. [2024-05-12 13:13:43,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 176 transitions, 1954 flow [2024-05-12 13:13:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:13:43,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:13:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-05-12 13:13:43,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:13:43,405 INFO L175 Difference]: Start difference. First operand has 129 places, 125 transitions, 1263 flow. Second operand 10 states and 185 transitions. [2024-05-12 13:13:43,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 176 transitions, 1954 flow [2024-05-12 13:13:43,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 176 transitions, 1845 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 13:13:43,456 INFO L231 Difference]: Finished difference. Result has 133 places, 130 transitions, 1370 flow [2024-05-12 13:13:43,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1370, PETRI_PLACES=133, PETRI_TRANSITIONS=130} [2024-05-12 13:13:43,457 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-05-12 13:13:43,457 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 130 transitions, 1370 flow [2024-05-12 13:13:43,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:43,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:43,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:43,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:13:43,458 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:43,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:43,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1829363716, now seen corresponding path program 4 times [2024-05-12 13:13:43,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:43,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058364753] [2024-05-12 13:13:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:43,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:44,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:44,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058364753] [2024-05-12 13:13:44,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058364753] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:44,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:44,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:44,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765073833] [2024-05-12 13:13:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:44,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:44,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:44,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 130 transitions, 1370 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:44,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:44,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:44,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:44,863 INFO L124 PetriNetUnfolderBase]: 1098/2226 cut-off events. [2024-05-12 13:13:44,863 INFO L125 PetriNetUnfolderBase]: For 28560/28568 co-relation queries the response was YES. [2024-05-12 13:13:44,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10162 conditions, 2226 events. 1098/2226 cut-off events. For 28560/28568 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14391 event pairs, 343 based on Foata normal form. 26/2125 useless extension candidates. Maximal degree in co-relation 10097. Up to 1238 conditions per place. [2024-05-12 13:13:44,876 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 102 selfloop transitions, 65 changer transitions 0/175 dead transitions. [2024-05-12 13:13:44,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 175 transitions, 1941 flow [2024-05-12 13:13:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:13:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:13:44,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-05-12 13:13:44,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-05-12 13:13:44,878 INFO L175 Difference]: Start difference. First operand has 133 places, 130 transitions, 1370 flow. Second operand 11 states and 192 transitions. [2024-05-12 13:13:44,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 175 transitions, 1941 flow [2024-05-12 13:13:44,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 175 transitions, 1848 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:44,929 INFO L231 Difference]: Finished difference. Result has 138 places, 130 transitions, 1417 flow [2024-05-12 13:13:44,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1417, PETRI_PLACES=138, PETRI_TRANSITIONS=130} [2024-05-12 13:13:44,929 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-05-12 13:13:44,929 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 130 transitions, 1417 flow [2024-05-12 13:13:44,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:44,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:44,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:44,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:13:44,930 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:44,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:44,930 INFO L85 PathProgramCache]: Analyzing trace with hash 915316017, now seen corresponding path program 1 times [2024-05-12 13:13:44,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:44,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251557507] [2024-05-12 13:13:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:45,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:45,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251557507] [2024-05-12 13:13:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251557507] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:45,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:45,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:45,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535052403] [2024-05-12 13:13:45,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:45,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:45,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:45,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:45,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:45,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 1417 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:45,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:45,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:45,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:46,307 INFO L124 PetriNetUnfolderBase]: 1128/2253 cut-off events. [2024-05-12 13:13:46,307 INFO L125 PetriNetUnfolderBase]: For 23960/23968 co-relation queries the response was YES. [2024-05-12 13:13:46,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10683 conditions, 2253 events. 1128/2253 cut-off events. For 23960/23968 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14515 event pairs, 356 based on Foata normal form. 10/2127 useless extension candidates. Maximal degree in co-relation 10616. Up to 1490 conditions per place. [2024-05-12 13:13:46,321 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 105 selfloop transitions, 62 changer transitions 0/175 dead transitions. [2024-05-12 13:13:46,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 175 transitions, 2027 flow [2024-05-12 13:13:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:13:46,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:13:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-05-12 13:13:46,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-05-12 13:13:46,323 INFO L175 Difference]: Start difference. First operand has 138 places, 130 transitions, 1417 flow. Second operand 12 states and 197 transitions. [2024-05-12 13:13:46,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 175 transitions, 2027 flow [2024-05-12 13:13:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 175 transitions, 1890 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:13:46,388 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 1521 flow [2024-05-12 13:13:46,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1521, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-05-12 13:13:46,389 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 100 predicate places. [2024-05-12 13:13:46,389 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 1521 flow [2024-05-12 13:13:46,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:46,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:46,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:13:46,390 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:46,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash 281062926, now seen corresponding path program 5 times [2024-05-12 13:13:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481730554] [2024-05-12 13:13:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:47,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:47,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481730554] [2024-05-12 13:13:47,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481730554] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:47,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:47,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:47,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885376539] [2024-05-12 13:13:47,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:47,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:47,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:47,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:47,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:47,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:47,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 1521 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:47,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:47,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:47,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:47,840 INFO L124 PetriNetUnfolderBase]: 1162/2302 cut-off events. [2024-05-12 13:13:47,841 INFO L125 PetriNetUnfolderBase]: For 26324/26326 co-relation queries the response was YES. [2024-05-12 13:13:47,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11024 conditions, 2302 events. 1162/2302 cut-off events. For 26324/26326 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14676 event pairs, 252 based on Foata normal form. 6/2181 useless extension candidates. Maximal degree in co-relation 10955. Up to 1547 conditions per place. [2024-05-12 13:13:47,859 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 111 selfloop transitions, 55 changer transitions 0/174 dead transitions. [2024-05-12 13:13:47,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 174 transitions, 2098 flow [2024-05-12 13:13:47,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-05-12 13:13:47,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-05-12 13:13:47,861 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 1521 flow. Second operand 8 states and 143 transitions. [2024-05-12 13:13:47,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 174 transitions, 2098 flow [2024-05-12 13:13:47,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 174 transitions, 2005 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-05-12 13:13:47,931 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 1626 flow [2024-05-12 13:13:47,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1626, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2024-05-12 13:13:47,932 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2024-05-12 13:13:47,932 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 1626 flow [2024-05-12 13:13:47,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:47,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:47,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:47,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:13:47,932 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:47,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash 281066646, now seen corresponding path program 6 times [2024-05-12 13:13:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520842981] [2024-05-12 13:13:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:47,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:48,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:48,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520842981] [2024-05-12 13:13:48,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520842981] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:48,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:48,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:48,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494231687] [2024-05-12 13:13:48,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:48,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:48,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:48,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:48,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:48,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 1626 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:48,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:48,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:48,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:49,109 INFO L124 PetriNetUnfolderBase]: 1284/2636 cut-off events. [2024-05-12 13:13:49,109 INFO L125 PetriNetUnfolderBase]: For 34990/34992 co-relation queries the response was YES. [2024-05-12 13:13:49,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12245 conditions, 2636 events. 1284/2636 cut-off events. For 34990/34992 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17914 event pairs, 400 based on Foata normal form. 18/2494 useless extension candidates. Maximal degree in co-relation 12173. Up to 1644 conditions per place. [2024-05-12 13:13:49,126 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 121 selfloop transitions, 63 changer transitions 0/192 dead transitions. [2024-05-12 13:13:49,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 192 transitions, 2279 flow [2024-05-12 13:13:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:13:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:13:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-05-12 13:13:49,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-05-12 13:13:49,128 INFO L175 Difference]: Start difference. First operand has 143 places, 143 transitions, 1626 flow. Second operand 10 states and 183 transitions. [2024-05-12 13:13:49,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 192 transitions, 2279 flow [2024-05-12 13:13:49,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 192 transitions, 2116 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-05-12 13:13:49,217 INFO L231 Difference]: Finished difference. Result has 148 places, 145 transitions, 1639 flow [2024-05-12 13:13:49,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1639, PETRI_PLACES=148, PETRI_TRANSITIONS=145} [2024-05-12 13:13:49,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2024-05-12 13:13:49,219 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 145 transitions, 1639 flow [2024-05-12 13:13:49,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:49,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:49,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:49,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:13:49,220 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:49,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash 281066801, now seen corresponding path program 2 times [2024-05-12 13:13:49,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:49,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338665020] [2024-05-12 13:13:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:49,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:50,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:50,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338665020] [2024-05-12 13:13:50,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338665020] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:50,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:50,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:50,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363295925] [2024-05-12 13:13:50,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:50,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:50,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:50,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:50,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 145 transitions, 1639 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:50,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:50,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:50,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:50,712 INFO L124 PetriNetUnfolderBase]: 1173/2358 cut-off events. [2024-05-12 13:13:50,713 INFO L125 PetriNetUnfolderBase]: For 20610/20612 co-relation queries the response was YES. [2024-05-12 13:13:50,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10735 conditions, 2358 events. 1173/2358 cut-off events. For 20610/20612 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15451 event pairs, 346 based on Foata normal form. 4/2212 useless extension candidates. Maximal degree in co-relation 10663. Up to 1620 conditions per place. [2024-05-12 13:13:50,729 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 119 selfloop transitions, 62 changer transitions 0/189 dead transitions. [2024-05-12 13:13:50,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 189 transitions, 2252 flow [2024-05-12 13:13:50,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:13:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:13:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-05-12 13:13:50,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-05-12 13:13:50,732 INFO L175 Difference]: Start difference. First operand has 148 places, 145 transitions, 1639 flow. Second operand 11 states and 188 transitions. [2024-05-12 13:13:50,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 189 transitions, 2252 flow [2024-05-12 13:13:50,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 189 transitions, 2127 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 13:13:50,810 INFO L231 Difference]: Finished difference. Result has 152 places, 150 transitions, 1712 flow [2024-05-12 13:13:50,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1712, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2024-05-12 13:13:50,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-05-12 13:13:50,811 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 1712 flow [2024-05-12 13:13:50,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:50,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:50,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:50,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:13:50,811 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:50,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:50,812 INFO L85 PathProgramCache]: Analyzing trace with hash 286573331, now seen corresponding path program 3 times [2024-05-12 13:13:50,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:50,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480090816] [2024-05-12 13:13:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:50,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:51,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:51,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480090816] [2024-05-12 13:13:51,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480090816] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:51,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:51,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:13:51,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446930037] [2024-05-12 13:13:51,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:51,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:13:51,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:51,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:13:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:13:51,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:51,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 150 transitions, 1712 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:51,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:51,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:51,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:52,305 INFO L124 PetriNetUnfolderBase]: 1186/2379 cut-off events. [2024-05-12 13:13:52,305 INFO L125 PetriNetUnfolderBase]: For 21991/21999 co-relation queries the response was YES. [2024-05-12 13:13:52,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10917 conditions, 2379 events. 1186/2379 cut-off events. For 21991/21999 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15530 event pairs, 321 based on Foata normal form. 10/2238 useless extension candidates. Maximal degree in co-relation 10843. Up to 1725 conditions per place. [2024-05-12 13:13:52,322 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 136 selfloop transitions, 41 changer transitions 0/185 dead transitions. [2024-05-12 13:13:52,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 185 transitions, 2223 flow [2024-05-12 13:13:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:13:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:13:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 13:13:52,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-05-12 13:13:52,323 INFO L175 Difference]: Start difference. First operand has 152 places, 150 transitions, 1712 flow. Second operand 10 states and 167 transitions. [2024-05-12 13:13:52,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 185 transitions, 2223 flow [2024-05-12 13:13:52,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 185 transitions, 2074 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-05-12 13:13:52,409 INFO L231 Difference]: Finished difference. Result has 154 places, 152 transitions, 1689 flow [2024-05-12 13:13:52,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1689, PETRI_PLACES=154, PETRI_TRANSITIONS=152} [2024-05-12 13:13:52,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-05-12 13:13:52,410 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 152 transitions, 1689 flow [2024-05-12 13:13:52,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:52,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:52,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:52,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:13:52,410 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:52,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:52,411 INFO L85 PathProgramCache]: Analyzing trace with hash 286573176, now seen corresponding path program 7 times [2024-05-12 13:13:52,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:52,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228016541] [2024-05-12 13:13:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:53,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228016541] [2024-05-12 13:13:53,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228016541] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:53,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:53,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:13:53,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422485035] [2024-05-12 13:13:53,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:53,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:13:53,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:53,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:13:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:13:53,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:53,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 152 transitions, 1689 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:53,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:53,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:53,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:53,660 INFO L124 PetriNetUnfolderBase]: 1211/2444 cut-off events. [2024-05-12 13:13:53,661 INFO L125 PetriNetUnfolderBase]: For 22769/22777 co-relation queries the response was YES. [2024-05-12 13:13:53,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10946 conditions, 2444 events. 1211/2444 cut-off events. For 22769/22777 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16183 event pairs, 379 based on Foata normal form. 12/2301 useless extension candidates. Maximal degree in co-relation 10871. Up to 1906 conditions per place. [2024-05-12 13:13:53,675 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 141 selfloop transitions, 38 changer transitions 0/187 dead transitions. [2024-05-12 13:13:53,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 187 transitions, 2221 flow [2024-05-12 13:13:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:13:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:13:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 13:13:53,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-05-12 13:13:53,677 INFO L175 Difference]: Start difference. First operand has 154 places, 152 transitions, 1689 flow. Second operand 10 states and 159 transitions. [2024-05-12 13:13:53,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 187 transitions, 2221 flow [2024-05-12 13:13:53,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 187 transitions, 2121 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 13:13:53,758 INFO L231 Difference]: Finished difference. Result has 158 places, 158 transitions, 1773 flow [2024-05-12 13:13:53,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1773, PETRI_PLACES=158, PETRI_TRANSITIONS=158} [2024-05-12 13:13:53,758 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-05-12 13:13:53,758 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 158 transitions, 1773 flow [2024-05-12 13:13:53,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:53,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:53,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:53,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:13:53,759 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:53,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash -172409321, now seen corresponding path program 1 times [2024-05-12 13:13:53,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:53,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84140524] [2024-05-12 13:13:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:53,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:54,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:54,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84140524] [2024-05-12 13:13:54,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84140524] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:54,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:54,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:13:54,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738121740] [2024-05-12 13:13:54,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:54,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:13:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:13:54,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:13:54,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:54,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 158 transitions, 1773 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:54,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:54,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:54,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:55,159 INFO L124 PetriNetUnfolderBase]: 1228/2487 cut-off events. [2024-05-12 13:13:55,159 INFO L125 PetriNetUnfolderBase]: For 22772/22772 co-relation queries the response was YES. [2024-05-12 13:13:55,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11177 conditions, 2487 events. 1228/2487 cut-off events. For 22772/22772 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16583 event pairs, 419 based on Foata normal form. 2/2329 useless extension candidates. Maximal degree in co-relation 11099. Up to 2086 conditions per place. [2024-05-12 13:13:55,177 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 157 selfloop transitions, 14 changer transitions 0/179 dead transitions. [2024-05-12 13:13:55,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 179 transitions, 2194 flow [2024-05-12 13:13:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-05-12 13:13:55,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2024-05-12 13:13:55,179 INFO L175 Difference]: Start difference. First operand has 158 places, 158 transitions, 1773 flow. Second operand 9 states and 137 transitions. [2024-05-12 13:13:55,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 179 transitions, 2194 flow [2024-05-12 13:13:55,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 179 transitions, 2116 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:55,274 INFO L231 Difference]: Finished difference. Result has 161 places, 159 transitions, 1743 flow [2024-05-12 13:13:55,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1743, PETRI_PLACES=161, PETRI_TRANSITIONS=159} [2024-05-12 13:13:55,274 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 120 predicate places. [2024-05-12 13:13:55,275 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 159 transitions, 1743 flow [2024-05-12 13:13:55,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:55,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:55,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:13:55,275 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:55,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1436862831, now seen corresponding path program 4 times [2024-05-12 13:13:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957337592] [2024-05-12 13:13:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:56,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:56,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957337592] [2024-05-12 13:13:56,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957337592] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:56,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:56,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:13:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905910989] [2024-05-12 13:13:56,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:56,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:13:56,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:13:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:13:56,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:56,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 159 transitions, 1743 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:56,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:56,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:56,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:56,735 INFO L124 PetriNetUnfolderBase]: 1252/2524 cut-off events. [2024-05-12 13:13:56,736 INFO L125 PetriNetUnfolderBase]: For 23845/23845 co-relation queries the response was YES. [2024-05-12 13:13:56,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11291 conditions, 2524 events. 1252/2524 cut-off events. For 23845/23845 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16810 event pairs, 422 based on Foata normal form. 2/2362 useless extension candidates. Maximal degree in co-relation 11213. Up to 2100 conditions per place. [2024-05-12 13:13:56,750 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 154 selfloop transitions, 21 changer transitions 0/183 dead transitions. [2024-05-12 13:13:56,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 183 transitions, 2213 flow [2024-05-12 13:13:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:13:56,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:13:56,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-05-12 13:13:56,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-05-12 13:13:56,752 INFO L175 Difference]: Start difference. First operand has 161 places, 159 transitions, 1743 flow. Second operand 10 states and 151 transitions. [2024-05-12 13:13:56,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 183 transitions, 2213 flow [2024-05-12 13:13:56,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 183 transitions, 2130 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-05-12 13:13:56,853 INFO L231 Difference]: Finished difference. Result has 162 places, 163 transitions, 1772 flow [2024-05-12 13:13:56,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1772, PETRI_PLACES=162, PETRI_TRANSITIONS=163} [2024-05-12 13:13:56,854 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-05-12 13:13:56,854 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 163 transitions, 1772 flow [2024-05-12 13:13:56,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:56,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:56,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:56,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:13:56,855 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:56,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:56,855 INFO L85 PathProgramCache]: Analyzing trace with hash 297103345, now seen corresponding path program 2 times [2024-05-12 13:13:56,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:56,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716514193] [2024-05-12 13:13:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:56,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:57,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:57,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716514193] [2024-05-12 13:13:57,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716514193] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:57,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:57,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:13:57,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372835098] [2024-05-12 13:13:57,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:57,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:13:57,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:13:57,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:13:57,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:57,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 163 transitions, 1772 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:57,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:57,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:57,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:58,075 INFO L124 PetriNetUnfolderBase]: 1269/2564 cut-off events. [2024-05-12 13:13:58,075 INFO L125 PetriNetUnfolderBase]: For 24604/24604 co-relation queries the response was YES. [2024-05-12 13:13:58,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11311 conditions, 2564 events. 1269/2564 cut-off events. For 24604/24604 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17191 event pairs, 426 based on Foata normal form. 2/2399 useless extension candidates. Maximal degree in co-relation 11234. Up to 2131 conditions per place. [2024-05-12 13:13:58,093 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 160 selfloop transitions, 18 changer transitions 0/186 dead transitions. [2024-05-12 13:13:58,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 186 transitions, 2216 flow [2024-05-12 13:13:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-05-12 13:13:58,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-05-12 13:13:58,095 INFO L175 Difference]: Start difference. First operand has 162 places, 163 transitions, 1772 flow. Second operand 9 states and 141 transitions. [2024-05-12 13:13:58,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 186 transitions, 2216 flow [2024-05-12 13:13:58,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 186 transitions, 2162 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-05-12 13:13:58,191 INFO L231 Difference]: Finished difference. Result has 164 places, 164 transitions, 1776 flow [2024-05-12 13:13:58,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1776, PETRI_PLACES=164, PETRI_TRANSITIONS=164} [2024-05-12 13:13:58,192 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-05-12 13:13:58,192 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 164 transitions, 1776 flow [2024-05-12 13:13:58,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:58,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:58,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:58,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:13:58,193 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:58,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash -84555457, now seen corresponding path program 3 times [2024-05-12 13:13:58,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:58,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134872595] [2024-05-12 13:13:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:58,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:58,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:58,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134872595] [2024-05-12 13:13:58,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134872595] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:58,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:58,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:13:58,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464051855] [2024-05-12 13:13:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:58,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:13:58,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:58,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:13:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:13:59,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:13:59,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 164 transitions, 1776 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:59,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:59,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:13:59,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:59,575 INFO L124 PetriNetUnfolderBase]: 1286/2601 cut-off events. [2024-05-12 13:13:59,575 INFO L125 PetriNetUnfolderBase]: For 25895/25895 co-relation queries the response was YES. [2024-05-12 13:13:59,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11492 conditions, 2601 events. 1286/2601 cut-off events. For 25895/25895 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17495 event pairs, 438 based on Foata normal form. 2/2434 useless extension candidates. Maximal degree in co-relation 11415. Up to 2177 conditions per place. [2024-05-12 13:13:59,634 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 165 selfloop transitions, 13 changer transitions 0/186 dead transitions. [2024-05-12 13:13:59,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 186 transitions, 2216 flow [2024-05-12 13:13:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-05-12 13:13:59,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-05-12 13:13:59,635 INFO L175 Difference]: Start difference. First operand has 164 places, 164 transitions, 1776 flow. Second operand 9 states and 138 transitions. [2024-05-12 13:13:59,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 186 transitions, 2216 flow [2024-05-12 13:13:59,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 186 transitions, 2143 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-05-12 13:13:59,738 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 1753 flow [2024-05-12 13:13:59,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1753, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2024-05-12 13:13:59,738 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-05-12 13:13:59,738 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 1753 flow [2024-05-12 13:13:59,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:59,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:59,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:59,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:13:59,739 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:13:59,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash -74369167, now seen corresponding path program 4 times [2024-05-12 13:13:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905441111] [2024-05-12 13:13:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:00,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:00,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905441111] [2024-05-12 13:14:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905441111] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:00,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:00,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:00,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312356973] [2024-05-12 13:14:00,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:00,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:00,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:00,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:00,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:00,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 1753 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:00,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:00,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:00,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:01,129 INFO L124 PetriNetUnfolderBase]: 1287/2604 cut-off events. [2024-05-12 13:14:01,129 INFO L125 PetriNetUnfolderBase]: For 24988/24988 co-relation queries the response was YES. [2024-05-12 13:14:01,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11295 conditions, 2604 events. 1287/2604 cut-off events. For 24988/24988 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17469 event pairs, 421 based on Foata normal form. 2/2446 useless extension candidates. Maximal degree in co-relation 11218. Up to 2172 conditions per place. [2024-05-12 13:14:01,148 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 169 selfloop transitions, 13 changer transitions 0/190 dead transitions. [2024-05-12 13:14:01,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 190 transitions, 2221 flow [2024-05-12 13:14:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:14:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:14:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-05-12 13:14:01,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-05-12 13:14:01,149 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 1753 flow. Second operand 9 states and 139 transitions. [2024-05-12 13:14:01,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 190 transitions, 2221 flow [2024-05-12 13:14:01,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 190 transitions, 2181 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 13:14:01,251 INFO L231 Difference]: Finished difference. Result has 169 places, 168 transitions, 1784 flow [2024-05-12 13:14:01,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1784, PETRI_PLACES=169, PETRI_TRANSITIONS=168} [2024-05-12 13:14:01,252 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 128 predicate places. [2024-05-12 13:14:01,252 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 168 transitions, 1784 flow [2024-05-12 13:14:01,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:01,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:01,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:01,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:14:01,255 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:01,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1152656691, now seen corresponding path program 5 times [2024-05-12 13:14:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:01,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61961432] [2024-05-12 13:14:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:01,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:02,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:02,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61961432] [2024-05-12 13:14:02,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61961432] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:02,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:02,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:02,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262270780] [2024-05-12 13:14:02,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:02,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:02,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:02,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:02,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 168 transitions, 1784 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:02,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:02,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:02,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:02,680 INFO L124 PetriNetUnfolderBase]: 1283/2598 cut-off events. [2024-05-12 13:14:02,680 INFO L125 PetriNetUnfolderBase]: For 24044/24044 co-relation queries the response was YES. [2024-05-12 13:14:02,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11222 conditions, 2598 events. 1283/2598 cut-off events. For 24044/24044 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 17460 event pairs, 434 based on Foata normal form. 2/2430 useless extension candidates. Maximal degree in co-relation 11143. Up to 2169 conditions per place. [2024-05-12 13:14:02,699 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 165 selfloop transitions, 16 changer transitions 0/189 dead transitions. [2024-05-12 13:14:02,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 189 transitions, 2206 flow [2024-05-12 13:14:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-05-12 13:14:02,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-05-12 13:14:02,701 INFO L175 Difference]: Start difference. First operand has 169 places, 168 transitions, 1784 flow. Second operand 10 states and 150 transitions. [2024-05-12 13:14:02,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 189 transitions, 2206 flow [2024-05-12 13:14:02,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 189 transitions, 2161 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 13:14:02,820 INFO L231 Difference]: Finished difference. Result has 173 places, 168 transitions, 1776 flow [2024-05-12 13:14:02,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1776, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2024-05-12 13:14:02,821 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-05-12 13:14:02,821 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 1776 flow [2024-05-12 13:14:02,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:02,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:02,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:02,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:14:02,822 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:02,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash 296888019, now seen corresponding path program 6 times [2024-05-12 13:14:02,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:02,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763312059] [2024-05-12 13:14:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763312059] [2024-05-12 13:14:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763312059] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:03,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:03,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:03,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991915482] [2024-05-12 13:14:03,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:03,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:03,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:03,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:03,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:03,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 1776 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:03,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:03,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:03,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:04,344 INFO L124 PetriNetUnfolderBase]: 1296/2618 cut-off events. [2024-05-12 13:14:04,344 INFO L125 PetriNetUnfolderBase]: For 24599/24599 co-relation queries the response was YES. [2024-05-12 13:14:04,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11267 conditions, 2618 events. 1296/2618 cut-off events. For 24599/24599 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17603 event pairs, 424 based on Foata normal form. 2/2447 useless extension candidates. Maximal degree in co-relation 11187. Up to 2123 conditions per place. [2024-05-12 13:14:04,363 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 160 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2024-05-12 13:14:04,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 197 transitions, 2272 flow [2024-05-12 13:14:04,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 13:14:04,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-05-12 13:14:04,365 INFO L175 Difference]: Start difference. First operand has 173 places, 168 transitions, 1776 flow. Second operand 10 states and 159 transitions. [2024-05-12 13:14:04,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 197 transitions, 2272 flow [2024-05-12 13:14:04,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 197 transitions, 2113 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-05-12 13:14:04,484 INFO L231 Difference]: Finished difference. Result has 171 places, 170 transitions, 1719 flow [2024-05-12 13:14:04,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1719, PETRI_PLACES=171, PETRI_TRANSITIONS=170} [2024-05-12 13:14:04,484 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-05-12 13:14:04,485 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 170 transitions, 1719 flow [2024-05-12 13:14:04,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:04,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:04,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:04,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:14:04,485 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:04,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1098517468, now seen corresponding path program 8 times [2024-05-12 13:14:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:04,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090457861] [2024-05-12 13:14:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:05,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:05,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090457861] [2024-05-12 13:14:05,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090457861] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:05,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:05,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:05,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494593981] [2024-05-12 13:14:05,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:05,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:05,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:05,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:05,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 170 transitions, 1719 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:05,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:05,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:05,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:05,966 INFO L124 PetriNetUnfolderBase]: 1412/2912 cut-off events. [2024-05-12 13:14:05,966 INFO L125 PetriNetUnfolderBase]: For 36238/36238 co-relation queries the response was YES. [2024-05-12 13:14:05,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11818 conditions, 2912 events. 1412/2912 cut-off events. For 36238/36238 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20296 event pairs, 477 based on Foata normal form. 14/2737 useless extension candidates. Maximal degree in co-relation 11741. Up to 2159 conditions per place. [2024-05-12 13:14:05,987 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 172 selfloop transitions, 26 changer transitions 0/206 dead transitions. [2024-05-12 13:14:05,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 206 transitions, 2268 flow [2024-05-12 13:14:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-05-12 13:14:05,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-05-12 13:14:05,988 INFO L175 Difference]: Start difference. First operand has 171 places, 170 transitions, 1719 flow. Second operand 10 states and 164 transitions. [2024-05-12 13:14:05,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 206 transitions, 2268 flow [2024-05-12 13:14:06,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 206 transitions, 2196 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:06,170 INFO L231 Difference]: Finished difference. Result has 173 places, 172 transitions, 1737 flow [2024-05-12 13:14:06,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1737, PETRI_PLACES=173, PETRI_TRANSITIONS=172} [2024-05-12 13:14:06,171 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-05-12 13:14:06,171 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 172 transitions, 1737 flow [2024-05-12 13:14:06,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:06,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:06,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:06,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:14:06,174 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:06,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash -369230813, now seen corresponding path program 7 times [2024-05-12 13:14:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:06,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514810182] [2024-05-12 13:14:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:06,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:07,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:07,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514810182] [2024-05-12 13:14:07,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514810182] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:07,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:07,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:07,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879715301] [2024-05-12 13:14:07,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:07,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:07,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:07,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:07,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:07,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 172 transitions, 1737 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:07,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:07,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:07,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:07,685 INFO L124 PetriNetUnfolderBase]: 1408/2890 cut-off events. [2024-05-12 13:14:07,685 INFO L125 PetriNetUnfolderBase]: For 24221/24221 co-relation queries the response was YES. [2024-05-12 13:14:07,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11688 conditions, 2890 events. 1408/2890 cut-off events. For 24221/24221 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 20162 event pairs, 489 based on Foata normal form. 2/2702 useless extension candidates. Maximal degree in co-relation 11610. Up to 2396 conditions per place. [2024-05-12 13:14:07,707 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 167 selfloop transitions, 20 changer transitions 0/195 dead transitions. [2024-05-12 13:14:07,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 195 transitions, 2181 flow [2024-05-12 13:14:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-05-12 13:14:07,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-05-12 13:14:07,710 INFO L175 Difference]: Start difference. First operand has 173 places, 172 transitions, 1737 flow. Second operand 10 states and 152 transitions. [2024-05-12 13:14:07,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 195 transitions, 2181 flow [2024-05-12 13:14:07,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 195 transitions, 2120 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:07,822 INFO L231 Difference]: Finished difference. Result has 175 places, 172 transitions, 1721 flow [2024-05-12 13:14:07,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1721, PETRI_PLACES=175, PETRI_TRANSITIONS=172} [2024-05-12 13:14:07,822 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-05-12 13:14:07,822 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 172 transitions, 1721 flow [2024-05-12 13:14:07,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:07,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:07,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:07,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:14:07,823 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:07,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash -369236393, now seen corresponding path program 8 times [2024-05-12 13:14:07,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:07,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505564569] [2024-05-12 13:14:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:07,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:08,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:08,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505564569] [2024-05-12 13:14:08,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505564569] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:08,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:08,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:08,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655065201] [2024-05-12 13:14:08,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:08,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:08,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:08,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:08,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:08,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:08,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 1721 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:08,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:08,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:08,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:09,264 INFO L124 PetriNetUnfolderBase]: 1404/2883 cut-off events. [2024-05-12 13:14:09,265 INFO L125 PetriNetUnfolderBase]: For 22512/22512 co-relation queries the response was YES. [2024-05-12 13:14:09,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11495 conditions, 2883 events. 1404/2883 cut-off events. For 22512/22512 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 20083 event pairs, 479 based on Foata normal form. 2/2694 useless extension candidates. Maximal degree in co-relation 11416. Up to 2311 conditions per place. [2024-05-12 13:14:09,286 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 156 selfloop transitions, 33 changer transitions 0/197 dead transitions. [2024-05-12 13:14:09,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 197 transitions, 2176 flow [2024-05-12 13:14:09,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 13:14:09,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-05-12 13:14:09,296 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 1721 flow. Second operand 10 states and 155 transitions. [2024-05-12 13:14:09,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 197 transitions, 2176 flow [2024-05-12 13:14:09,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 197 transitions, 2074 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-05-12 13:14:09,441 INFO L231 Difference]: Finished difference. Result has 175 places, 172 transitions, 1691 flow [2024-05-12 13:14:09,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=175, PETRI_TRANSITIONS=172} [2024-05-12 13:14:09,441 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-05-12 13:14:09,441 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 172 transitions, 1691 flow [2024-05-12 13:14:09,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:09,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:09,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:09,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:14:09,442 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:09,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:09,442 INFO L85 PathProgramCache]: Analyzing trace with hash -369236548, now seen corresponding path program 9 times [2024-05-12 13:14:09,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:09,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212831870] [2024-05-12 13:14:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:10,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:10,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212831870] [2024-05-12 13:14:10,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212831870] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:10,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:10,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189496748] [2024-05-12 13:14:10,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:10,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:10,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:10,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 1691 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:10,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:10,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:10,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:10,715 INFO L124 PetriNetUnfolderBase]: 1401/2878 cut-off events. [2024-05-12 13:14:10,716 INFO L125 PetriNetUnfolderBase]: For 20893/20893 co-relation queries the response was YES. [2024-05-12 13:14:10,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11347 conditions, 2878 events. 1401/2878 cut-off events. For 20893/20893 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 20073 event pairs, 496 based on Foata normal form. 2/2691 useless extension candidates. Maximal degree in co-relation 11267. Up to 2393 conditions per place. [2024-05-12 13:14:10,736 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 165 selfloop transitions, 20 changer transitions 0/193 dead transitions. [2024-05-12 13:14:10,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 193 transitions, 2132 flow [2024-05-12 13:14:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-05-12 13:14:10,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-05-12 13:14:10,738 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 1691 flow. Second operand 10 states and 149 transitions. [2024-05-12 13:14:10,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 193 transitions, 2132 flow [2024-05-12 13:14:10,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 193 transitions, 1974 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-05-12 13:14:10,862 INFO L231 Difference]: Finished difference. Result has 175 places, 172 transitions, 1579 flow [2024-05-12 13:14:10,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1579, PETRI_PLACES=175, PETRI_TRANSITIONS=172} [2024-05-12 13:14:10,862 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-05-12 13:14:10,862 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 172 transitions, 1579 flow [2024-05-12 13:14:10,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:10,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:10,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:10,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:14:10,863 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:10,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1748186088, now seen corresponding path program 1 times [2024-05-12 13:14:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:10,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439380531] [2024-05-12 13:14:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:10,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:11,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:11,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439380531] [2024-05-12 13:14:11,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439380531] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:11,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:11,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:11,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760154723] [2024-05-12 13:14:11,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:11,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:11,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:11,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:11,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:11,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:11,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 1579 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:11,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:11,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:11,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:12,390 INFO L124 PetriNetUnfolderBase]: 1610/3356 cut-off events. [2024-05-12 13:14:12,391 INFO L125 PetriNetUnfolderBase]: For 34757/34760 co-relation queries the response was YES. [2024-05-12 13:14:12,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 3356 events. 1610/3356 cut-off events. For 34757/34760 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 24421 event pairs, 512 based on Foata normal form. 11/3168 useless extension candidates. Maximal degree in co-relation 12560. Up to 1379 conditions per place. [2024-05-12 13:14:12,467 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 137 selfloop transitions, 75 changer transitions 0/220 dead transitions. [2024-05-12 13:14:12,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 220 transitions, 2269 flow [2024-05-12 13:14:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-05-12 13:14:12,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-05-12 13:14:12,490 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 1579 flow. Second operand 10 states and 181 transitions. [2024-05-12 13:14:12,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 220 transitions, 2269 flow [2024-05-12 13:14:12,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 220 transitions, 2221 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:12,658 INFO L231 Difference]: Finished difference. Result has 177 places, 172 transitions, 1685 flow [2024-05-12 13:14:12,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1685, PETRI_PLACES=177, PETRI_TRANSITIONS=172} [2024-05-12 13:14:12,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-05-12 13:14:12,659 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 172 transitions, 1685 flow [2024-05-12 13:14:12,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:12,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:12,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:12,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:14:12,660 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:12,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:12,661 INFO L85 PathProgramCache]: Analyzing trace with hash -369609662, now seen corresponding path program 2 times [2024-05-12 13:14:12,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:12,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467032048] [2024-05-12 13:14:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:12,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:13,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:13,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467032048] [2024-05-12 13:14:13,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467032048] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:13,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:13,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:13,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659941562] [2024-05-12 13:14:13,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:13,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:13,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:13,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:13,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:13,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:13,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 172 transitions, 1685 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:13,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:13,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:13,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:14,614 INFO L124 PetriNetUnfolderBase]: 1748/3673 cut-off events. [2024-05-12 13:14:14,614 INFO L125 PetriNetUnfolderBase]: For 48353/48353 co-relation queries the response was YES. [2024-05-12 13:14:14,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14317 conditions, 3673 events. 1748/3673 cut-off events. For 48353/48353 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 27846 event pairs, 685 based on Foata normal form. 8/3474 useless extension candidates. Maximal degree in co-relation 14236. Up to 1889 conditions per place. [2024-05-12 13:14:14,642 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 145 selfloop transitions, 60 changer transitions 0/213 dead transitions. [2024-05-12 13:14:14,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 213 transitions, 2348 flow [2024-05-12 13:14:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:14:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:14:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-05-12 13:14:14,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-05-12 13:14:14,644 INFO L175 Difference]: Start difference. First operand has 177 places, 172 transitions, 1685 flow. Second operand 9 states and 168 transitions. [2024-05-12 13:14:14,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 213 transitions, 2348 flow [2024-05-12 13:14:14,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 213 transitions, 2200 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:14,824 INFO L231 Difference]: Finished difference. Result has 178 places, 172 transitions, 1661 flow [2024-05-12 13:14:14,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1661, PETRI_PLACES=178, PETRI_TRANSITIONS=172} [2024-05-12 13:14:14,825 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-05-12 13:14:14,825 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 172 transitions, 1661 flow [2024-05-12 13:14:14,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:14,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:14,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:14,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:14:14,826 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:14,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:14,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1689978318, now seen corresponding path program 3 times [2024-05-12 13:14:14,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:14,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5388810] [2024-05-12 13:14:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:14,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:15,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:15,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5388810] [2024-05-12 13:14:15,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5388810] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:15,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:15,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427808611] [2024-05-12 13:14:15,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:15,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:15,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:15,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:15,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:15,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 172 transitions, 1661 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:15,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:15,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:15,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:16,597 INFO L124 PetriNetUnfolderBase]: 1647/3460 cut-off events. [2024-05-12 13:14:16,598 INFO L125 PetriNetUnfolderBase]: For 42877/42881 co-relation queries the response was YES. [2024-05-12 13:14:16,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13296 conditions, 3460 events. 1647/3460 cut-off events. For 42877/42881 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 25784 event pairs, 561 based on Foata normal form. 12/3267 useless extension candidates. Maximal degree in co-relation 13214. Up to 1881 conditions per place. [2024-05-12 13:14:16,621 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 142 selfloop transitions, 74 changer transitions 0/224 dead transitions. [2024-05-12 13:14:16,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 224 transitions, 2385 flow [2024-05-12 13:14:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:14:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:14:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-05-12 13:14:16,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-05-12 13:14:16,631 INFO L175 Difference]: Start difference. First operand has 178 places, 172 transitions, 1661 flow. Second operand 12 states and 210 transitions. [2024-05-12 13:14:16,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 224 transitions, 2385 flow [2024-05-12 13:14:16,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 224 transitions, 2267 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 13:14:16,796 INFO L231 Difference]: Finished difference. Result has 183 places, 172 transitions, 1695 flow [2024-05-12 13:14:16,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1695, PETRI_PLACES=183, PETRI_TRANSITIONS=172} [2024-05-12 13:14:16,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-05-12 13:14:16,796 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 172 transitions, 1695 flow [2024-05-12 13:14:16,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:16,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:16,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:16,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:14:16,797 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:16,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:16,797 INFO L85 PathProgramCache]: Analyzing trace with hash 827188244, now seen corresponding path program 4 times [2024-05-12 13:14:16,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:16,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957649076] [2024-05-12 13:14:16,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:16,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:17,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:17,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957649076] [2024-05-12 13:14:17,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957649076] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:17,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:17,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:17,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251709165] [2024-05-12 13:14:17,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:17,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:17,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:17,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:17,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 172 transitions, 1695 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:17,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:17,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:17,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:18,666 INFO L124 PetriNetUnfolderBase]: 1634/3436 cut-off events. [2024-05-12 13:14:18,667 INFO L125 PetriNetUnfolderBase]: For 34309/34313 co-relation queries the response was YES. [2024-05-12 13:14:18,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12857 conditions, 3436 events. 1634/3436 cut-off events. For 34309/34313 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 25691 event pairs, 614 based on Foata normal form. 14/3240 useless extension candidates. Maximal degree in co-relation 12774. Up to 2228 conditions per place. [2024-05-12 13:14:18,694 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 134 selfloop transitions, 77 changer transitions 0/219 dead transitions. [2024-05-12 13:14:18,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 219 transitions, 2287 flow [2024-05-12 13:14:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 13:14:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 13:14:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-05-12 13:14:18,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45114345114345117 [2024-05-12 13:14:18,695 INFO L175 Difference]: Start difference. First operand has 183 places, 172 transitions, 1695 flow. Second operand 13 states and 217 transitions. [2024-05-12 13:14:18,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 219 transitions, 2287 flow [2024-05-12 13:14:18,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 219 transitions, 2141 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:14:18,838 INFO L231 Difference]: Finished difference. Result has 186 places, 173 transitions, 1720 flow [2024-05-12 13:14:18,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1720, PETRI_PLACES=186, PETRI_TRANSITIONS=173} [2024-05-12 13:14:18,838 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-05-12 13:14:18,839 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 173 transitions, 1720 flow [2024-05-12 13:14:18,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:18,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:18,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:18,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:14:18,839 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:18,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:18,840 INFO L85 PathProgramCache]: Analyzing trace with hash 937296148, now seen corresponding path program 5 times [2024-05-12 13:14:18,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:18,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849366068] [2024-05-12 13:14:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:18,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:19,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:19,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849366068] [2024-05-12 13:14:19,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849366068] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:19,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:19,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:19,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917947094] [2024-05-12 13:14:19,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:19,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:19,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:19,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:19,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:19,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:19,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 173 transitions, 1720 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:19,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:19,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:19,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:20,608 INFO L124 PetriNetUnfolderBase]: 1792/3759 cut-off events. [2024-05-12 13:14:20,608 INFO L125 PetriNetUnfolderBase]: For 48402/48404 co-relation queries the response was YES. [2024-05-12 13:14:20,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14573 conditions, 3759 events. 1792/3759 cut-off events. For 48402/48404 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 28491 event pairs, 539 based on Foata normal form. 10/3556 useless extension candidates. Maximal degree in co-relation 14489. Up to 1563 conditions per place. [2024-05-12 13:14:20,632 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 146 selfloop transitions, 71 changer transitions 0/225 dead transitions. [2024-05-12 13:14:20,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 225 transitions, 2455 flow [2024-05-12 13:14:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-05-12 13:14:20,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-05-12 13:14:20,633 INFO L175 Difference]: Start difference. First operand has 186 places, 173 transitions, 1720 flow. Second operand 10 states and 188 transitions. [2024-05-12 13:14:20,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 225 transitions, 2455 flow [2024-05-12 13:14:20,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 225 transitions, 2302 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-05-12 13:14:20,836 INFO L231 Difference]: Finished difference. Result has 185 places, 173 transitions, 1713 flow [2024-05-12 13:14:20,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1713, PETRI_PLACES=185, PETRI_TRANSITIONS=173} [2024-05-12 13:14:20,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-05-12 13:14:20,837 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 173 transitions, 1713 flow [2024-05-12 13:14:20,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:20,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:20,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:20,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:14:20,837 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:20,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash 937416118, now seen corresponding path program 6 times [2024-05-12 13:14:20,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:20,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460954509] [2024-05-12 13:14:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:20,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:21,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460954509] [2024-05-12 13:14:21,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460954509] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:21,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:21,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:21,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369850941] [2024-05-12 13:14:21,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:21,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:21,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:21,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:21,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:21,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:21,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 173 transitions, 1713 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:21,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:21,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:21,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:22,544 INFO L124 PetriNetUnfolderBase]: 1888/3994 cut-off events. [2024-05-12 13:14:22,544 INFO L125 PetriNetUnfolderBase]: For 53432/53434 co-relation queries the response was YES. [2024-05-12 13:14:22,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15308 conditions, 3994 events. 1888/3994 cut-off events. For 53432/53434 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 31133 event pairs, 743 based on Foata normal form. 12/3764 useless extension candidates. Maximal degree in co-relation 15223. Up to 2750 conditions per place. [2024-05-12 13:14:22,573 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 133 selfloop transitions, 80 changer transitions 0/221 dead transitions. [2024-05-12 13:14:22,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 221 transitions, 2358 flow [2024-05-12 13:14:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-05-12 13:14:22,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-05-12 13:14:22,575 INFO L175 Difference]: Start difference. First operand has 185 places, 173 transitions, 1713 flow. Second operand 10 states and 179 transitions. [2024-05-12 13:14:22,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 221 transitions, 2358 flow [2024-05-12 13:14:22,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 221 transitions, 2210 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:22,758 INFO L231 Difference]: Finished difference. Result has 188 places, 179 transitions, 1807 flow [2024-05-12 13:14:22,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1807, PETRI_PLACES=188, PETRI_TRANSITIONS=179} [2024-05-12 13:14:22,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-05-12 13:14:22,759 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 179 transitions, 1807 flow [2024-05-12 13:14:22,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:22,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:22,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:22,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:14:22,760 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:22,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash 937411468, now seen corresponding path program 7 times [2024-05-12 13:14:22,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:22,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809234408] [2024-05-12 13:14:22,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:23,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809234408] [2024-05-12 13:14:23,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809234408] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:23,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:23,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991461238] [2024-05-12 13:14:23,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:23,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:23,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:23,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:23,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:23,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:23,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 179 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:23,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:23,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:23,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:24,560 INFO L124 PetriNetUnfolderBase]: 1872/3984 cut-off events. [2024-05-12 13:14:24,561 INFO L125 PetriNetUnfolderBase]: For 35939/35941 co-relation queries the response was YES. [2024-05-12 13:14:24,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 3984 events. 1872/3984 cut-off events. For 35939/35941 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31184 event pairs, 663 based on Foata normal form. 10/3748 useless extension candidates. Maximal degree in co-relation 14552. Up to 2542 conditions per place. [2024-05-12 13:14:24,591 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 142 selfloop transitions, 80 changer transitions 0/230 dead transitions. [2024-05-12 13:14:24,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 230 transitions, 2450 flow [2024-05-12 13:14:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-05-12 13:14:24,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-05-12 13:14:24,593 INFO L175 Difference]: Start difference. First operand has 188 places, 179 transitions, 1807 flow. Second operand 10 states and 186 transitions. [2024-05-12 13:14:24,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 230 transitions, 2450 flow [2024-05-12 13:14:24,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 230 transitions, 2344 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 13:14:24,732 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 1894 flow [2024-05-12 13:14:24,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1894, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2024-05-12 13:14:24,732 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-05-12 13:14:24,732 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 1894 flow [2024-05-12 13:14:24,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:24,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:24,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:24,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:14:24,733 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:24,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:24,733 INFO L85 PathProgramCache]: Analyzing trace with hash 300506220, now seen corresponding path program 1 times [2024-05-12 13:14:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:24,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764320048] [2024-05-12 13:14:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:24,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:25,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:25,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764320048] [2024-05-12 13:14:25,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764320048] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:25,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:25,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:25,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833913545] [2024-05-12 13:14:25,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:25,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:25,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:25,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:25,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 181 transitions, 1894 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:25,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:25,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:25,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:26,707 INFO L124 PetriNetUnfolderBase]: 1900/4016 cut-off events. [2024-05-12 13:14:26,708 INFO L125 PetriNetUnfolderBase]: For 29654/29658 co-relation queries the response was YES. [2024-05-12 13:14:26,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15030 conditions, 4016 events. 1900/4016 cut-off events. For 29654/29658 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 31400 event pairs, 800 based on Foata normal form. 6/3780 useless extension candidates. Maximal degree in co-relation 14941. Up to 3140 conditions per place. [2024-05-12 13:14:26,735 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 172 selfloop transitions, 40 changer transitions 0/220 dead transitions. [2024-05-12 13:14:26,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 220 transitions, 2469 flow [2024-05-12 13:14:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:14:26,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:14:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-05-12 13:14:26,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-05-12 13:14:26,737 INFO L175 Difference]: Start difference. First operand has 194 places, 181 transitions, 1894 flow. Second operand 12 states and 191 transitions. [2024-05-12 13:14:26,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 220 transitions, 2469 flow [2024-05-12 13:14:26,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 220 transitions, 2313 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 13:14:26,881 INFO L231 Difference]: Finished difference. Result has 199 places, 184 transitions, 1856 flow [2024-05-12 13:14:26,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1856, PETRI_PLACES=199, PETRI_TRANSITIONS=184} [2024-05-12 13:14:26,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-05-12 13:14:26,882 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 184 transitions, 1856 flow [2024-05-12 13:14:26,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:26,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:26,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:26,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:14:26,882 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:26,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:26,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1486046728, now seen corresponding path program 8 times [2024-05-12 13:14:26,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:26,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245261018] [2024-05-12 13:14:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:26,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:27,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245261018] [2024-05-12 13:14:27,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245261018] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:27,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:27,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:27,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331046643] [2024-05-12 13:14:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:27,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:27,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:27,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:27,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 184 transitions, 1856 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:27,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:27,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:27,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:28,759 INFO L124 PetriNetUnfolderBase]: 2038/4357 cut-off events. [2024-05-12 13:14:28,760 INFO L125 PetriNetUnfolderBase]: For 54434/54438 co-relation queries the response was YES. [2024-05-12 13:14:28,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16352 conditions, 4357 events. 2038/4357 cut-off events. For 54434/54438 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 34795 event pairs, 803 based on Foata normal form. 12/4110 useless extension candidates. Maximal degree in co-relation 16262. Up to 2989 conditions per place. [2024-05-12 13:14:28,794 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 177 selfloop transitions, 47 changer transitions 0/232 dead transitions. [2024-05-12 13:14:28,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 232 transitions, 2590 flow [2024-05-12 13:14:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:14:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:14:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-05-12 13:14:28,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-05-12 13:14:28,796 INFO L175 Difference]: Start difference. First operand has 199 places, 184 transitions, 1856 flow. Second operand 11 states and 192 transitions. [2024-05-12 13:14:28,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 232 transitions, 2590 flow [2024-05-12 13:14:28,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 232 transitions, 2496 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-05-12 13:14:28,946 INFO L231 Difference]: Finished difference. Result has 200 places, 184 transitions, 1860 flow [2024-05-12 13:14:28,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1860, PETRI_PLACES=200, PETRI_TRANSITIONS=184} [2024-05-12 13:14:28,946 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-05-12 13:14:28,946 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 184 transitions, 1860 flow [2024-05-12 13:14:28,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:28,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:28,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:28,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:14:28,947 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:28,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:28,947 INFO L85 PathProgramCache]: Analyzing trace with hash 127601116, now seen corresponding path program 9 times [2024-05-12 13:14:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:28,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462223018] [2024-05-12 13:14:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:28,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:29,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:29,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462223018] [2024-05-12 13:14:29,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462223018] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:29,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:29,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000541642] [2024-05-12 13:14:29,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:29,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:29,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:29,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 184 transitions, 1860 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:29,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:29,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:29,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:30,774 INFO L124 PetriNetUnfolderBase]: 2213/4760 cut-off events. [2024-05-12 13:14:30,775 INFO L125 PetriNetUnfolderBase]: For 71731/71733 co-relation queries the response was YES. [2024-05-12 13:14:30,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18026 conditions, 4760 events. 2213/4760 cut-off events. For 71731/71733 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 38962 event pairs, 931 based on Foata normal form. 10/4493 useless extension candidates. Maximal degree in co-relation 17936. Up to 3207 conditions per place. [2024-05-12 13:14:30,813 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 171 selfloop transitions, 53 changer transitions 0/232 dead transitions. [2024-05-12 13:14:30,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 232 transitions, 2596 flow [2024-05-12 13:14:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:30,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-05-12 13:14:30,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-05-12 13:14:30,816 INFO L175 Difference]: Start difference. First operand has 200 places, 184 transitions, 1860 flow. Second operand 10 states and 182 transitions. [2024-05-12 13:14:30,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 232 transitions, 2596 flow [2024-05-12 13:14:31,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 232 transitions, 2504 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:14:31,080 INFO L231 Difference]: Finished difference. Result has 201 places, 184 transitions, 1878 flow [2024-05-12 13:14:31,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1878, PETRI_PLACES=201, PETRI_TRANSITIONS=184} [2024-05-12 13:14:31,081 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-05-12 13:14:31,081 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 184 transitions, 1878 flow [2024-05-12 13:14:31,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:31,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:31,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:31,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:14:31,082 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:31,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:31,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1492480468, now seen corresponding path program 10 times [2024-05-12 13:14:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:31,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887635478] [2024-05-12 13:14:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:31,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:32,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:32,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887635478] [2024-05-12 13:14:32,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887635478] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:32,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:32,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:32,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785582208] [2024-05-12 13:14:32,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:32,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:32,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:32,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 184 transitions, 1878 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:32,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:32,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:32,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:33,222 INFO L124 PetriNetUnfolderBase]: 2213/4742 cut-off events. [2024-05-12 13:14:33,222 INFO L125 PetriNetUnfolderBase]: For 61781/61785 co-relation queries the response was YES. [2024-05-12 13:14:33,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17554 conditions, 4742 events. 2213/4742 cut-off events. For 61781/61785 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 38758 event pairs, 1045 based on Foata normal form. 14/4480 useless extension candidates. Maximal degree in co-relation 17463. Up to 3618 conditions per place. [2024-05-12 13:14:33,263 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 180 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-05-12 13:14:33,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 229 transitions, 2489 flow [2024-05-12 13:14:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 13:14:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 13:14:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 208 transitions. [2024-05-12 13:14:33,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-05-12 13:14:33,264 INFO L175 Difference]: Start difference. First operand has 201 places, 184 transitions, 1878 flow. Second operand 13 states and 208 transitions. [2024-05-12 13:14:33,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 229 transitions, 2489 flow [2024-05-12 13:14:33,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 229 transitions, 2345 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:33,503 INFO L231 Difference]: Finished difference. Result has 207 places, 186 transitions, 1845 flow [2024-05-12 13:14:33,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1845, PETRI_PLACES=207, PETRI_TRANSITIONS=186} [2024-05-12 13:14:33,504 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-05-12 13:14:33,504 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 186 transitions, 1845 flow [2024-05-12 13:14:33,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:33,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:33,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:33,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:14:33,505 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:33,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:33,505 INFO L85 PathProgramCache]: Analyzing trace with hash 127605766, now seen corresponding path program 11 times [2024-05-12 13:14:33,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:33,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398186932] [2024-05-12 13:14:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:33,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:34,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:34,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398186932] [2024-05-12 13:14:34,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398186932] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:34,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:34,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:14:34,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560438348] [2024-05-12 13:14:34,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:34,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:14:34,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:14:34,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:14:34,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:34,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 186 transitions, 1845 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:34,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:34,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:34,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:35,431 INFO L124 PetriNetUnfolderBase]: 2200/4726 cut-off events. [2024-05-12 13:14:35,432 INFO L125 PetriNetUnfolderBase]: For 46716/46718 co-relation queries the response was YES. [2024-05-12 13:14:35,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16825 conditions, 4726 events. 2200/4726 cut-off events. For 46716/46718 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 38674 event pairs, 1002 based on Foata normal form. 12/4460 useless extension candidates. Maximal degree in co-relation 16733. Up to 3551 conditions per place. [2024-05-12 13:14:35,474 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 170 selfloop transitions, 51 changer transitions 0/229 dead transitions. [2024-05-12 13:14:35,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 229 transitions, 2449 flow [2024-05-12 13:14:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:14:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:14:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-05-12 13:14:35,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:14:35,475 INFO L175 Difference]: Start difference. First operand has 207 places, 186 transitions, 1845 flow. Second operand 11 states and 187 transitions. [2024-05-12 13:14:35,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 229 transitions, 2449 flow [2024-05-12 13:14:35,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 229 transitions, 2370 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-05-12 13:14:35,665 INFO L231 Difference]: Finished difference. Result has 208 places, 187 transitions, 1888 flow [2024-05-12 13:14:35,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1888, PETRI_PLACES=208, PETRI_TRANSITIONS=187} [2024-05-12 13:14:35,665 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-05-12 13:14:35,666 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 187 transitions, 1888 flow [2024-05-12 13:14:35,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:35,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:35,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:35,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:14:35,666 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:35,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash 293839546, now seen corresponding path program 12 times [2024-05-12 13:14:35,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:35,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261943593] [2024-05-12 13:14:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:35,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:36,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:36,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261943593] [2024-05-12 13:14:36,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261943593] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:36,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:36,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:36,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711278093] [2024-05-12 13:14:36,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:36,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:36,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:36,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:36,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:36,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:36,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 187 transitions, 1888 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:36,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:36,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:36,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:37,820 INFO L124 PetriNetUnfolderBase]: 2288/4916 cut-off events. [2024-05-12 13:14:37,821 INFO L125 PetriNetUnfolderBase]: For 52011/52015 co-relation queries the response was YES. [2024-05-12 13:14:37,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17561 conditions, 4916 events. 2288/4916 cut-off events. For 52011/52015 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 40700 event pairs, 1085 based on Foata normal form. 16/4646 useless extension candidates. Maximal degree in co-relation 17468. Up to 3710 conditions per place. [2024-05-12 13:14:37,862 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 175 selfloop transitions, 48 changer transitions 0/231 dead transitions. [2024-05-12 13:14:37,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 231 transitions, 2500 flow [2024-05-12 13:14:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:14:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:14:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-05-12 13:14:37,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-05-12 13:14:37,863 INFO L175 Difference]: Start difference. First operand has 208 places, 187 transitions, 1888 flow. Second operand 12 states and 199 transitions. [2024-05-12 13:14:37,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 231 transitions, 2500 flow [2024-05-12 13:14:38,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 231 transitions, 2368 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-05-12 13:14:38,042 INFO L231 Difference]: Finished difference. Result has 209 places, 188 transitions, 1874 flow [2024-05-12 13:14:38,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1874, PETRI_PLACES=209, PETRI_TRANSITIONS=188} [2024-05-12 13:14:38,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-05-12 13:14:38,042 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 188 transitions, 1874 flow [2024-05-12 13:14:38,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:38,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:38,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:38,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:14:38,043 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:38,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash 300514590, now seen corresponding path program 2 times [2024-05-12 13:14:38,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:38,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792715288] [2024-05-12 13:14:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:38,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:39,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:39,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792715288] [2024-05-12 13:14:39,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792715288] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:39,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:39,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149940151] [2024-05-12 13:14:39,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:39,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:39,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:39,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:39,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 188 transitions, 1874 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:39,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:39,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:39,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:40,334 INFO L124 PetriNetUnfolderBase]: 2305/4949 cut-off events. [2024-05-12 13:14:40,334 INFO L125 PetriNetUnfolderBase]: For 35947/35951 co-relation queries the response was YES. [2024-05-12 13:14:40,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17699 conditions, 4949 events. 2305/4949 cut-off events. For 35947/35951 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 41108 event pairs, 1087 based on Foata normal form. 6/4669 useless extension candidates. Maximal degree in co-relation 17606. Up to 3849 conditions per place. [2024-05-12 13:14:40,365 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 176 selfloop transitions, 44 changer transitions 0/228 dead transitions. [2024-05-12 13:14:40,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 228 transitions, 2463 flow [2024-05-12 13:14:40,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:14:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:14:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-05-12 13:14:40,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-05-12 13:14:40,366 INFO L175 Difference]: Start difference. First operand has 209 places, 188 transitions, 1874 flow. Second operand 12 states and 194 transitions. [2024-05-12 13:14:40,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 228 transitions, 2463 flow [2024-05-12 13:14:40,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 228 transitions, 2361 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-05-12 13:14:40,551 INFO L231 Difference]: Finished difference. Result has 211 places, 189 transitions, 1882 flow [2024-05-12 13:14:40,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1882, PETRI_PLACES=211, PETRI_TRANSITIONS=189} [2024-05-12 13:14:40,552 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-05-12 13:14:40,552 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 189 transitions, 1882 flow [2024-05-12 13:14:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:40,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:40,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:40,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:14:40,553 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:40,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1486224358, now seen corresponding path program 13 times [2024-05-12 13:14:40,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:40,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089770548] [2024-05-12 13:14:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:40,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:41,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:41,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089770548] [2024-05-12 13:14:41,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089770548] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:41,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:41,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:41,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299270201] [2024-05-12 13:14:41,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:41,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:41,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:41,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:41,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:41,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 189 transitions, 1882 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:41,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:41,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:41,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:42,578 INFO L124 PetriNetUnfolderBase]: 2376/5126 cut-off events. [2024-05-12 13:14:42,579 INFO L125 PetriNetUnfolderBase]: For 51964/51968 co-relation queries the response was YES. [2024-05-12 13:14:42,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18202 conditions, 5126 events. 2376/5126 cut-off events. For 51964/51968 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 43014 event pairs, 1145 based on Foata normal form. 14/4841 useless extension candidates. Maximal degree in co-relation 18108. Up to 3939 conditions per place. [2024-05-12 13:14:42,616 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 181 selfloop transitions, 39 changer transitions 0/228 dead transitions. [2024-05-12 13:14:42,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 228 transitions, 2461 flow [2024-05-12 13:14:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:14:42,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:14:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-05-12 13:14:42,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-05-12 13:14:42,618 INFO L175 Difference]: Start difference. First operand has 211 places, 189 transitions, 1882 flow. Second operand 11 states and 183 transitions. [2024-05-12 13:14:42,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 228 transitions, 2461 flow [2024-05-12 13:14:42,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 228 transitions, 2362 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-05-12 13:14:42,845 INFO L231 Difference]: Finished difference. Result has 213 places, 189 transitions, 1865 flow [2024-05-12 13:14:42,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1865, PETRI_PLACES=213, PETRI_TRANSITIONS=189} [2024-05-12 13:14:42,846 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-05-12 13:14:42,846 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 189 transitions, 1865 flow [2024-05-12 13:14:42,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:42,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:42,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:42,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:14:42,847 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:42,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:42,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1056395884, now seen corresponding path program 14 times [2024-05-12 13:14:42,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:42,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256159014] [2024-05-12 13:14:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:43,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:43,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256159014] [2024-05-12 13:14:43,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256159014] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:43,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:43,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:43,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048289570] [2024-05-12 13:14:43,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:43,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:43,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:43,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:43,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:43,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 189 transitions, 1865 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:43,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:43,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:43,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:44,739 INFO L124 PetriNetUnfolderBase]: 2447/5296 cut-off events. [2024-05-12 13:14:44,739 INFO L125 PetriNetUnfolderBase]: For 53120/53120 co-relation queries the response was YES. [2024-05-12 13:14:44,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18512 conditions, 5296 events. 2447/5296 cut-off events. For 53120/53120 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 44868 event pairs, 1230 based on Foata normal form. 10/4997 useless extension candidates. Maximal degree in co-relation 18417. Up to 4217 conditions per place. [2024-05-12 13:14:44,777 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 183 selfloop transitions, 33 changer transitions 0/224 dead transitions. [2024-05-12 13:14:44,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 224 transitions, 2420 flow [2024-05-12 13:14:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:14:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:14:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-05-12 13:14:44,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-05-12 13:14:44,778 INFO L175 Difference]: Start difference. First operand has 213 places, 189 transitions, 1865 flow. Second operand 11 states and 174 transitions. [2024-05-12 13:14:44,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 224 transitions, 2420 flow [2024-05-12 13:14:45,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 224 transitions, 2327 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-05-12 13:14:45,022 INFO L231 Difference]: Finished difference. Result has 214 places, 189 transitions, 1842 flow [2024-05-12 13:14:45,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1842, PETRI_PLACES=214, PETRI_TRANSITIONS=189} [2024-05-12 13:14:45,023 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-05-12 13:14:45,023 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 189 transitions, 1842 flow [2024-05-12 13:14:45,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:45,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:45,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:45,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:14:45,024 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:45,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1978502504, now seen corresponding path program 3 times [2024-05-12 13:14:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435805690] [2024-05-12 13:14:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435805690] [2024-05-12 13:14:45,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435805690] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:45,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411390477] [2024-05-12 13:14:45,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:45,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:45,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:45,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:45,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 189 transitions, 1842 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:45,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:45,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:45,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:46,929 INFO L124 PetriNetUnfolderBase]: 2464/5317 cut-off events. [2024-05-12 13:14:46,929 INFO L125 PetriNetUnfolderBase]: For 38829/38829 co-relation queries the response was YES. [2024-05-12 13:14:46,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18603 conditions, 5317 events. 2464/5317 cut-off events. For 38829/38829 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 45131 event pairs, 1290 based on Foata normal form. 2/5012 useless extension candidates. Maximal degree in co-relation 18508. Up to 4482 conditions per place. [2024-05-12 13:14:46,973 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 191 selfloop transitions, 15 changer transitions 0/214 dead transitions. [2024-05-12 13:14:46,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 214 transitions, 2346 flow [2024-05-12 13:14:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-05-12 13:14:46,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-05-12 13:14:46,974 INFO L175 Difference]: Start difference. First operand has 214 places, 189 transitions, 1842 flow. Second operand 10 states and 152 transitions. [2024-05-12 13:14:46,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 214 transitions, 2346 flow [2024-05-12 13:14:47,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 214 transitions, 2282 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:14:47,283 INFO L231 Difference]: Finished difference. Result has 215 places, 190 transitions, 1832 flow [2024-05-12 13:14:47,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1832, PETRI_PLACES=215, PETRI_TRANSITIONS=190} [2024-05-12 13:14:47,283 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-05-12 13:14:47,283 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 190 transitions, 1832 flow [2024-05-12 13:14:47,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:47,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:47,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:47,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:14:47,284 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:47,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash 613590224, now seen corresponding path program 15 times [2024-05-12 13:14:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:47,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880409063] [2024-05-12 13:14:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:48,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:48,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880409063] [2024-05-12 13:14:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880409063] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:48,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:48,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:48,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024790528] [2024-05-12 13:14:48,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:48,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:48,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:48,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 190 transitions, 1832 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:48,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:48,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:48,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:49,382 INFO L124 PetriNetUnfolderBase]: 2639/5732 cut-off events. [2024-05-12 13:14:49,382 INFO L125 PetriNetUnfolderBase]: For 73085/73085 co-relation queries the response was YES. [2024-05-12 13:14:49,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20367 conditions, 5732 events. 2639/5732 cut-off events. For 73085/73085 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 49560 event pairs, 1343 based on Foata normal form. 8/5419 useless extension candidates. Maximal degree in co-relation 20271. Up to 4281 conditions per place. [2024-05-12 13:14:49,431 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 197 selfloop transitions, 29 changer transitions 0/234 dead transitions. [2024-05-12 13:14:49,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 234 transitions, 2572 flow [2024-05-12 13:14:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:14:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:14:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-05-12 13:14:49,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-05-12 13:14:49,433 INFO L175 Difference]: Start difference. First operand has 215 places, 190 transitions, 1832 flow. Second operand 11 states and 184 transitions. [2024-05-12 13:14:49,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 234 transitions, 2572 flow [2024-05-12 13:14:49,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 234 transitions, 2528 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:49,841 INFO L231 Difference]: Finished difference. Result has 218 places, 190 transitions, 1850 flow [2024-05-12 13:14:49,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1850, PETRI_PLACES=218, PETRI_TRANSITIONS=190} [2024-05-12 13:14:49,842 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-05-12 13:14:49,842 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 190 transitions, 1850 flow [2024-05-12 13:14:49,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:49,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:49,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:49,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:14:49,843 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:49,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1373536370, now seen corresponding path program 16 times [2024-05-12 13:14:49,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:49,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140237268] [2024-05-12 13:14:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:49,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140237268] [2024-05-12 13:14:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140237268] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:50,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:50,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026847338] [2024-05-12 13:14:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:50,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:50,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:50,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 190 transitions, 1850 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:50,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:50,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:50,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:52,024 INFO L124 PetriNetUnfolderBase]: 2654/5773 cut-off events. [2024-05-12 13:14:52,024 INFO L125 PetriNetUnfolderBase]: For 58677/58677 co-relation queries the response was YES. [2024-05-12 13:14:52,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19948 conditions, 5773 events. 2654/5773 cut-off events. For 58677/58677 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 50140 event pairs, 1398 based on Foata normal form. 10/5454 useless extension candidates. Maximal degree in co-relation 19851. Up to 4639 conditions per place. [2024-05-12 13:14:52,069 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 193 selfloop transitions, 31 changer transitions 0/232 dead transitions. [2024-05-12 13:14:52,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 232 transitions, 2477 flow [2024-05-12 13:14:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:14:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:14:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-05-12 13:14:52,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-05-12 13:14:52,071 INFO L175 Difference]: Start difference. First operand has 218 places, 190 transitions, 1850 flow. Second operand 12 states and 191 transitions. [2024-05-12 13:14:52,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 232 transitions, 2477 flow [2024-05-12 13:14:52,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 232 transitions, 2425 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:52,340 INFO L231 Difference]: Finished difference. Result has 222 places, 193 transitions, 1911 flow [2024-05-12 13:14:52,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1911, PETRI_PLACES=222, PETRI_TRANSITIONS=193} [2024-05-12 13:14:52,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-05-12 13:14:52,341 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 193 transitions, 1911 flow [2024-05-12 13:14:52,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:52,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:52,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:52,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:14:52,341 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:52,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash 620269918, now seen corresponding path program 4 times [2024-05-12 13:14:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:52,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137591769] [2024-05-12 13:14:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:52,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:53,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:53,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137591769] [2024-05-12 13:14:53,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137591769] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:53,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:53,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:53,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119191285] [2024-05-12 13:14:53,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:53,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:53,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:53,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:53,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:53,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:53,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 193 transitions, 1911 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:53,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:53,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:53,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:54,516 INFO L124 PetriNetUnfolderBase]: 2671/5791 cut-off events. [2024-05-12 13:14:54,516 INFO L125 PetriNetUnfolderBase]: For 43950/43950 co-relation queries the response was YES. [2024-05-12 13:14:54,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20242 conditions, 5791 events. 2671/5791 cut-off events. For 43950/43950 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 50329 event pairs, 1406 based on Foata normal form. 2/5467 useless extension candidates. Maximal degree in co-relation 20144. Up to 4786 conditions per place. [2024-05-12 13:14:54,565 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 192 selfloop transitions, 28 changer transitions 0/228 dead transitions. [2024-05-12 13:14:54,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 228 transitions, 2504 flow [2024-05-12 13:14:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:14:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:14:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-05-12 13:14:54,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-05-12 13:14:54,566 INFO L175 Difference]: Start difference. First operand has 222 places, 193 transitions, 1911 flow. Second operand 12 states and 185 transitions. [2024-05-12 13:14:54,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 228 transitions, 2504 flow [2024-05-12 13:14:54,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 228 transitions, 2408 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-05-12 13:14:54,827 INFO L231 Difference]: Finished difference. Result has 223 places, 195 transitions, 1921 flow [2024-05-12 13:14:54,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1921, PETRI_PLACES=223, PETRI_TRANSITIONS=195} [2024-05-12 13:14:54,827 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 182 predicate places. [2024-05-12 13:14:54,827 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 195 transitions, 1921 flow [2024-05-12 13:14:54,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:54,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:54,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:54,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:14:54,828 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:54,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:54,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1197840478, now seen corresponding path program 5 times [2024-05-12 13:14:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:54,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724490762] [2024-05-12 13:14:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:54,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:55,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:55,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724490762] [2024-05-12 13:14:55,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724490762] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:55,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:55,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:55,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231521216] [2024-05-12 13:14:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:55,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:55,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:55,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:55,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:55,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:55,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 195 transitions, 1921 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:55,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:55,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:55,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:56,777 INFO L124 PetriNetUnfolderBase]: 2688/5830 cut-off events. [2024-05-12 13:14:56,778 INFO L125 PetriNetUnfolderBase]: For 45301/45301 co-relation queries the response was YES. [2024-05-12 13:14:56,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20381 conditions, 5830 events. 2688/5830 cut-off events. For 45301/45301 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 50791 event pairs, 1445 based on Foata normal form. 2/5500 useless extension candidates. Maximal degree in co-relation 20284. Up to 4912 conditions per place. [2024-05-12 13:14:56,824 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 191 selfloop transitions, 20 changer transitions 0/219 dead transitions. [2024-05-12 13:14:56,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 219 transitions, 2440 flow [2024-05-12 13:14:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-05-12 13:14:56,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-05-12 13:14:56,826 INFO L175 Difference]: Start difference. First operand has 223 places, 195 transitions, 1921 flow. Second operand 10 states and 153 transitions. [2024-05-12 13:14:56,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 219 transitions, 2440 flow [2024-05-12 13:14:57,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 219 transitions, 2334 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:57,106 INFO L231 Difference]: Finished difference. Result has 225 places, 196 transitions, 1885 flow [2024-05-12 13:14:57,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1885, PETRI_PLACES=225, PETRI_TRANSITIONS=196} [2024-05-12 13:14:57,108 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-05-12 13:14:57,108 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 196 transitions, 1885 flow [2024-05-12 13:14:57,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:57,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:57,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:57,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:14:57,109 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:57,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash -967912858, now seen corresponding path program 6 times [2024-05-12 13:14:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:57,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333579730] [2024-05-12 13:14:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:57,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:57,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:57,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333579730] [2024-05-12 13:14:57,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333579730] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:57,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:57,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:14:57,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849230353] [2024-05-12 13:14:57,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:57,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:14:57,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:14:57,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:14:58,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:14:58,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 196 transitions, 1885 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:58,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:58,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:14:58,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:58,974 INFO L124 PetriNetUnfolderBase]: 2705/5859 cut-off events. [2024-05-12 13:14:58,975 INFO L125 PetriNetUnfolderBase]: For 45606/45606 co-relation queries the response was YES. [2024-05-12 13:14:59,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20352 conditions, 5859 events. 2705/5859 cut-off events. For 45606/45606 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 51019 event pairs, 1430 based on Foata normal form. 2/5529 useless extension candidates. Maximal degree in co-relation 20254. Up to 4901 conditions per place. [2024-05-12 13:14:59,146 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 200 selfloop transitions, 16 changer transitions 0/224 dead transitions. [2024-05-12 13:14:59,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 224 transitions, 2431 flow [2024-05-12 13:14:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:14:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:14:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 13:14:59,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-05-12 13:14:59,147 INFO L175 Difference]: Start difference. First operand has 225 places, 196 transitions, 1885 flow. Second operand 10 states and 156 transitions. [2024-05-12 13:14:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 224 transitions, 2431 flow [2024-05-12 13:14:59,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 224 transitions, 2371 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:59,497 INFO L231 Difference]: Finished difference. Result has 227 places, 197 transitions, 1889 flow [2024-05-12 13:14:59,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1889, PETRI_PLACES=227, PETRI_TRANSITIONS=197} [2024-05-12 13:14:59,498 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-05-12 13:14:59,498 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 197 transitions, 1889 flow [2024-05-12 13:14:59,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:59,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:59,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:59,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 13:14:59,499 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:14:59,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:59,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1675226536, now seen corresponding path program 7 times [2024-05-12 13:14:59,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:59,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754912958] [2024-05-12 13:14:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:59,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:00,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:00,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754912958] [2024-05-12 13:15:00,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754912958] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:00,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:00,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:15:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006101119] [2024-05-12 13:15:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:00,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:15:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:15:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:15:00,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:00,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 197 transitions, 1889 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:00,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:00,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:00,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:01,247 INFO L124 PetriNetUnfolderBase]: 2722/5897 cut-off events. [2024-05-12 13:15:01,247 INFO L125 PetriNetUnfolderBase]: For 47167/47167 co-relation queries the response was YES. [2024-05-12 13:15:01,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20517 conditions, 5897 events. 2722/5897 cut-off events. For 47167/47167 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 51389 event pairs, 1420 based on Foata normal form. 2/5586 useless extension candidates. Maximal degree in co-relation 20418. Up to 4958 conditions per place. [2024-05-12 13:15:01,299 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 204 selfloop transitions, 14 changer transitions 0/226 dead transitions. [2024-05-12 13:15:01,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 226 transitions, 2447 flow [2024-05-12 13:15:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:15:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:15:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 13:15:01,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-05-12 13:15:01,300 INFO L175 Difference]: Start difference. First operand has 227 places, 197 transitions, 1889 flow. Second operand 10 states and 155 transitions. [2024-05-12 13:15:01,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 226 transitions, 2447 flow [2024-05-12 13:15:01,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 226 transitions, 2393 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-05-12 13:15:01,685 INFO L231 Difference]: Finished difference. Result has 229 places, 198 transitions, 1897 flow [2024-05-12 13:15:01,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1897, PETRI_PLACES=229, PETRI_TRANSITIONS=198} [2024-05-12 13:15:01,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-05-12 13:15:01,685 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 198 transitions, 1897 flow [2024-05-12 13:15:01,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:01,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:01,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:01,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 13:15:01,686 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:01,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:01,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1372618176, now seen corresponding path program 17 times [2024-05-12 13:15:01,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:01,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793965201] [2024-05-12 13:15:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:01,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:02,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:02,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793965201] [2024-05-12 13:15:02,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793965201] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:02,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:02,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:15:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074147799] [2024-05-12 13:15:02,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:02,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:15:02,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:02,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:15:02,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:15:02,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:02,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 198 transitions, 1897 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:02,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:02,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:02,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:03,744 INFO L124 PetriNetUnfolderBase]: 2793/6083 cut-off events. [2024-05-12 13:15:03,744 INFO L125 PetriNetUnfolderBase]: For 67143/67143 co-relation queries the response was YES. [2024-05-12 13:15:03,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20882 conditions, 6083 events. 2793/6083 cut-off events. For 67143/67143 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 53441 event pairs, 1499 based on Foata normal form. 10/5746 useless extension candidates. Maximal degree in co-relation 20782. Up to 4980 conditions per place. [2024-05-12 13:15:03,796 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 205 selfloop transitions, 16 changer transitions 0/229 dead transitions. [2024-05-12 13:15:03,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 229 transitions, 2445 flow [2024-05-12 13:15:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:15:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:15:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-05-12 13:15:03,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-05-12 13:15:03,797 INFO L175 Difference]: Start difference. First operand has 229 places, 198 transitions, 1897 flow. Second operand 11 states and 169 transitions. [2024-05-12 13:15:03,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 229 transitions, 2445 flow [2024-05-12 13:15:04,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 229 transitions, 2393 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-05-12 13:15:04,188 INFO L231 Difference]: Finished difference. Result has 232 places, 198 transitions, 1881 flow [2024-05-12 13:15:04,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1881, PETRI_PLACES=232, PETRI_TRANSITIONS=198} [2024-05-12 13:15:04,188 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-05-12 13:15:04,188 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 198 transitions, 1881 flow [2024-05-12 13:15:04,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:04,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:04,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:04,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 13:15:04,189 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:04,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1438754506, now seen corresponding path program 8 times [2024-05-12 13:15:04,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:04,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340735128] [2024-05-12 13:15:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:04,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:05,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:05,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340735128] [2024-05-12 13:15:05,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340735128] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:05,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:05,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:15:05,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078932252] [2024-05-12 13:15:05,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:05,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:15:05,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:05,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:15:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:15:05,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:05,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 198 transitions, 1881 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:05,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:05,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:05,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:06,202 INFO L124 PetriNetUnfolderBase]: 2822/6133 cut-off events. [2024-05-12 13:15:06,202 INFO L125 PetriNetUnfolderBase]: For 48904/48904 co-relation queries the response was YES. [2024-05-12 13:15:06,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21085 conditions, 6133 events. 2822/6133 cut-off events. For 48904/48904 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 54106 event pairs, 1513 based on Foata normal form. 2/5785 useless extension candidates. Maximal degree in co-relation 20984. Up to 5136 conditions per place. [2024-05-12 13:15:06,257 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 199 selfloop transitions, 24 changer transitions 0/231 dead transitions. [2024-05-12 13:15:06,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 231 transitions, 2489 flow [2024-05-12 13:15:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:15:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:15:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 13:15:06,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-05-12 13:15:06,258 INFO L175 Difference]: Start difference. First operand has 232 places, 198 transitions, 1881 flow. Second operand 10 states and 155 transitions. [2024-05-12 13:15:06,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 231 transitions, 2489 flow [2024-05-12 13:15:06,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 231 transitions, 2449 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:15:06,703 INFO L231 Difference]: Finished difference. Result has 236 places, 205 transitions, 2006 flow [2024-05-12 13:15:06,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2006, PETRI_PLACES=236, PETRI_TRANSITIONS=205} [2024-05-12 13:15:06,704 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-05-12 13:15:06,704 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 205 transitions, 2006 flow [2024-05-12 13:15:06,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:06,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:06,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:06,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 13:15:06,704 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:06,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1438747562, now seen corresponding path program 18 times [2024-05-12 13:15:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549279430] [2024-05-12 13:15:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:07,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:07,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549279430] [2024-05-12 13:15:07,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549279430] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:07,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:07,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:15:07,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671422579] [2024-05-12 13:15:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:07,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:15:07,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:15:07,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:15:07,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:07,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 205 transitions, 2006 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:07,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:07,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:07,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:08,895 INFO L124 PetriNetUnfolderBase]: 2893/6307 cut-off events. [2024-05-12 13:15:08,895 INFO L125 PetriNetUnfolderBase]: For 71411/71411 co-relation queries the response was YES. [2024-05-12 13:15:08,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22113 conditions, 6307 events. 2893/6307 cut-off events. For 71411/71411 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 55925 event pairs, 1558 based on Foata normal form. 10/5961 useless extension candidates. Maximal degree in co-relation 22008. Up to 5125 conditions per place. [2024-05-12 13:15:08,950 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 210 selfloop transitions, 20 changer transitions 0/238 dead transitions. [2024-05-12 13:15:08,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 238 transitions, 2592 flow [2024-05-12 13:15:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:15:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:15:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-05-12 13:15:08,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-05-12 13:15:08,952 INFO L175 Difference]: Start difference. First operand has 236 places, 205 transitions, 2006 flow. Second operand 11 states and 172 transitions. [2024-05-12 13:15:08,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 238 transitions, 2592 flow [2024-05-12 13:15:09,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 238 transitions, 2539 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-05-12 13:15:09,361 INFO L231 Difference]: Finished difference. Result has 242 places, 205 transitions, 1998 flow [2024-05-12 13:15:09,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1998, PETRI_PLACES=242, PETRI_TRANSITIONS=205} [2024-05-12 13:15:09,362 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-05-12 13:15:09,362 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 205 transitions, 1998 flow [2024-05-12 13:15:09,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:09,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:09,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 13:15:09,363 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:09,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1438569932, now seen corresponding path program 19 times [2024-05-12 13:15:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580784656] [2024-05-12 13:15:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:09,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:10,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:10,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580784656] [2024-05-12 13:15:10,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580784656] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:10,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:10,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:15:10,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878646870] [2024-05-12 13:15:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:10,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:15:10,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:10,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:15:10,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:15:10,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:10,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 205 transitions, 1998 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:10,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:10,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:10,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:11,491 INFO L124 PetriNetUnfolderBase]: 2991/6583 cut-off events. [2024-05-12 13:15:11,492 INFO L125 PetriNetUnfolderBase]: For 82396/82396 co-relation queries the response was YES. [2024-05-12 13:15:11,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23056 conditions, 6583 events. 2991/6583 cut-off events. For 82396/82396 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 59020 event pairs, 1566 based on Foata normal form. 8/6220 useless extension candidates. Maximal degree in co-relation 22950. Up to 4765 conditions per place. [2024-05-12 13:15:11,556 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 212 selfloop transitions, 26 changer transitions 0/246 dead transitions. [2024-05-12 13:15:11,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 246 transitions, 2781 flow [2024-05-12 13:15:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:15:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:15:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-05-12 13:15:11,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-05-12 13:15:11,557 INFO L175 Difference]: Start difference. First operand has 242 places, 205 transitions, 1998 flow. Second operand 11 states and 179 transitions. [2024-05-12 13:15:11,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 246 transitions, 2781 flow [2024-05-12 13:15:12,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 246 transitions, 2744 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:15:12,048 INFO L231 Difference]: Finished difference. Result has 244 places, 205 transitions, 2017 flow [2024-05-12 13:15:12,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2017, PETRI_PLACES=244, PETRI_TRANSITIONS=205} [2024-05-12 13:15:12,049 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-05-12 13:15:12,049 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 205 transitions, 2017 flow [2024-05-12 13:15:12,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:12,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:12,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:12,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 13:15:12,050 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:12,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1445003672, now seen corresponding path program 20 times [2024-05-12 13:15:12,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:12,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429547386] [2024-05-12 13:15:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429547386] [2024-05-12 13:15:13,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429547386] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:13,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:13,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:15:13,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690815070] [2024-05-12 13:15:13,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:13,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:15:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:13,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:15:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:15:13,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:13,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 205 transitions, 2017 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:13,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:13,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:13,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:14,296 INFO L124 PetriNetUnfolderBase]: 3022/6614 cut-off events. [2024-05-12 13:15:14,296 INFO L125 PetriNetUnfolderBase]: For 79038/79038 co-relation queries the response was YES. [2024-05-12 13:15:14,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23023 conditions, 6614 events. 3022/6614 cut-off events. For 79038/79038 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 59451 event pairs, 1678 based on Foata normal form. 10/6254 useless extension candidates. Maximal degree in co-relation 22916. Up to 5431 conditions per place. [2024-05-12 13:15:14,358 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 206 selfloop transitions, 21 changer transitions 0/235 dead transitions. [2024-05-12 13:15:14,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 235 transitions, 2584 flow [2024-05-12 13:15:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:15:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:15:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-05-12 13:15:14,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-05-12 13:15:14,360 INFO L175 Difference]: Start difference. First operand has 244 places, 205 transitions, 2017 flow. Second operand 11 states and 170 transitions. [2024-05-12 13:15:14,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 235 transitions, 2584 flow [2024-05-12 13:15:14,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 235 transitions, 2534 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:15:14,814 INFO L231 Difference]: Finished difference. Result has 246 places, 205 transitions, 2013 flow [2024-05-12 13:15:14,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2013, PETRI_PLACES=246, PETRI_TRANSITIONS=205} [2024-05-12 13:15:14,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-05-12 13:15:14,815 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 205 transitions, 2013 flow [2024-05-12 13:15:14,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:14,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:14,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:14,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 13:15:14,815 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:14,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1445249626, now seen corresponding path program 9 times [2024-05-12 13:15:14,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:14,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963333259] [2024-05-12 13:15:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:14,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:15,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:15,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963333259] [2024-05-12 13:15:15,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963333259] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:15,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:15,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:15:15,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056572578] [2024-05-12 13:15:15,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:15,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:15:15,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:15,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:15:15,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:15:15,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:15,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 205 transitions, 2013 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:15,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:15,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:15,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:16,861 INFO L124 PetriNetUnfolderBase]: 2979/6501 cut-off events. [2024-05-12 13:15:16,861 INFO L125 PetriNetUnfolderBase]: For 36526/36526 co-relation queries the response was YES. [2024-05-12 13:15:16,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22146 conditions, 6501 events. 2979/6501 cut-off events. For 36526/36526 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 58217 event pairs, 1636 based on Foata normal form. 2/6141 useless extension candidates. Maximal degree in co-relation 22038. Up to 5386 conditions per place. [2024-05-12 13:15:16,925 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 200 selfloop transitions, 26 changer transitions 0/234 dead transitions. [2024-05-12 13:15:16,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 234 transitions, 2594 flow [2024-05-12 13:15:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:15:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:15:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 13:15:16,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-05-12 13:15:16,926 INFO L175 Difference]: Start difference. First operand has 246 places, 205 transitions, 2013 flow. Second operand 10 states and 159 transitions. [2024-05-12 13:15:16,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 234 transitions, 2594 flow [2024-05-12 13:15:17,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 234 transitions, 2554 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:15:17,259 INFO L231 Difference]: Finished difference. Result has 247 places, 206 transitions, 2063 flow [2024-05-12 13:15:17,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=247, PETRI_TRANSITIONS=206} [2024-05-12 13:15:17,260 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-05-12 13:15:17,260 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 206 transitions, 2063 flow [2024-05-12 13:15:17,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:17,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:17,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:17,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 13:15:17,261 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:17,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1749144168, now seen corresponding path program 1 times [2024-05-12 13:15:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401042762] [2024-05-12 13:15:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:18,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:18,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401042762] [2024-05-12 13:15:18,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401042762] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:18,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:18,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:15:18,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248711068] [2024-05-12 13:15:18,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:18,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:15:18,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:18,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:15:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:15:18,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:18,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 206 transitions, 2063 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:18,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:18,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:18,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:19,867 INFO L124 PetriNetUnfolderBase]: 3016/6583 cut-off events. [2024-05-12 13:15:19,868 INFO L125 PetriNetUnfolderBase]: For 48640/48644 co-relation queries the response was YES. [2024-05-12 13:15:19,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22481 conditions, 6583 events. 3016/6583 cut-off events. For 48640/48644 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 59186 event pairs, 1474 based on Foata normal form. 10/6228 useless extension candidates. Maximal degree in co-relation 22372. Up to 5222 conditions per place. [2024-05-12 13:15:19,932 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 196 selfloop transitions, 46 changer transitions 0/250 dead transitions. [2024-05-12 13:15:19,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 250 transitions, 2708 flow [2024-05-12 13:15:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 13:15:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 13:15:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 209 transitions. [2024-05-12 13:15:19,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43451143451143454 [2024-05-12 13:15:19,933 INFO L175 Difference]: Start difference. First operand has 247 places, 206 transitions, 2063 flow. Second operand 13 states and 209 transitions. [2024-05-12 13:15:19,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 250 transitions, 2708 flow [2024-05-12 13:15:20,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 250 transitions, 2638 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-05-12 13:15:20,415 INFO L231 Difference]: Finished difference. Result has 253 places, 206 transitions, 2088 flow [2024-05-12 13:15:20,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2088, PETRI_PLACES=253, PETRI_TRANSITIONS=206} [2024-05-12 13:15:20,416 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-05-12 13:15:20,416 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 206 transitions, 2088 flow [2024-05-12 13:15:20,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:20,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:20,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:20,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 13:15:20,417 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:20,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:20,417 INFO L85 PathProgramCache]: Analyzing trace with hash 726018544, now seen corresponding path program 2 times [2024-05-12 13:15:20,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:20,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060288370] [2024-05-12 13:15:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:20,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:21,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:21,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060288370] [2024-05-12 13:15:21,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060288370] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:21,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:21,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:15:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587992092] [2024-05-12 13:15:21,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:21,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:15:21,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:21,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:15:21,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:15:21,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:21,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 206 transitions, 2088 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:21,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:21,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:21,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:23,137 INFO L124 PetriNetUnfolderBase]: 3053/6676 cut-off events. [2024-05-12 13:15:23,138 INFO L125 PetriNetUnfolderBase]: For 48511/48515 co-relation queries the response was YES. [2024-05-12 13:15:23,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22672 conditions, 6676 events. 3053/6676 cut-off events. For 48511/48515 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 60324 event pairs, 1480 based on Foata normal form. 10/6322 useless extension candidates. Maximal degree in co-relation 22562. Up to 5207 conditions per place. [2024-05-12 13:15:23,192 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 195 selfloop transitions, 50 changer transitions 0/253 dead transitions. [2024-05-12 13:15:23,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 253 transitions, 2751 flow [2024-05-12 13:15:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 13:15:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 13:15:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2024-05-12 13:15:23,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407484407484408 [2024-05-12 13:15:23,193 INFO L175 Difference]: Start difference. First operand has 253 places, 206 transitions, 2088 flow. Second operand 13 states and 212 transitions. [2024-05-12 13:15:23,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 253 transitions, 2751 flow [2024-05-12 13:15:23,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 253 transitions, 2660 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-05-12 13:15:23,523 INFO L231 Difference]: Finished difference. Result has 255 places, 206 transitions, 2100 flow [2024-05-12 13:15:23,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2100, PETRI_PLACES=255, PETRI_TRANSITIONS=206} [2024-05-12 13:15:23,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-05-12 13:15:23,524 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 206 transitions, 2100 flow [2024-05-12 13:15:23,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:23,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:23,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:23,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 13:15:23,524 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:23,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash 524669824, now seen corresponding path program 3 times [2024-05-12 13:15:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:23,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624524370] [2024-05-12 13:15:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:24,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624524370] [2024-05-12 13:15:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624524370] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:24,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:24,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:15:24,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711600553] [2024-05-12 13:15:24,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:24,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:15:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:15:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:15:24,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:24,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 206 transitions, 2100 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:24,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:24,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:24,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:25,924 INFO L124 PetriNetUnfolderBase]: 3090/6742 cut-off events. [2024-05-12 13:15:25,924 INFO L125 PetriNetUnfolderBase]: For 49622/49626 co-relation queries the response was YES. [2024-05-12 13:15:25,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22981 conditions, 6742 events. 3090/6742 cut-off events. For 49622/49626 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 60999 event pairs, 1581 based on Foata normal form. 10/6382 useless extension candidates. Maximal degree in co-relation 22870. Up to 5408 conditions per place. [2024-05-12 13:15:25,994 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 198 selfloop transitions, 40 changer transitions 0/246 dead transitions. [2024-05-12 13:15:25,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 246 transitions, 2725 flow [2024-05-12 13:15:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:15:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:15:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-05-12 13:15:25,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-05-12 13:15:25,996 INFO L175 Difference]: Start difference. First operand has 255 places, 206 transitions, 2100 flow. Second operand 11 states and 183 transitions. [2024-05-12 13:15:25,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 246 transitions, 2725 flow [2024-05-12 13:15:26,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 246 transitions, 2626 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-05-12 13:15:26,380 INFO L231 Difference]: Finished difference. Result has 255 places, 206 transitions, 2084 flow [2024-05-12 13:15:26,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2084, PETRI_PLACES=255, PETRI_TRANSITIONS=206} [2024-05-12 13:15:26,386 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-05-12 13:15:26,386 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 206 transitions, 2084 flow [2024-05-12 13:15:26,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:26,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:26,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:26,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 13:15:26,387 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:26,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1810983864, now seen corresponding path program 4 times [2024-05-12 13:15:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544336519] [2024-05-12 13:15:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:26,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:27,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:27,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544336519] [2024-05-12 13:15:27,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544336519] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:27,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:27,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:15:27,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851930786] [2024-05-12 13:15:27,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:27,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:15:27,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:27,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:15:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:15:27,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:27,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 206 transitions, 2084 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:27,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:27,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:27,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:28,810 INFO L124 PetriNetUnfolderBase]: 3127/6825 cut-off events. [2024-05-12 13:15:28,810 INFO L125 PetriNetUnfolderBase]: For 50580/50580 co-relation queries the response was YES. [2024-05-12 13:15:28,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23168 conditions, 6825 events. 3127/6825 cut-off events. For 50580/50580 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 61946 event pairs, 1749 based on Foata normal form. 6/6459 useless extension candidates. Maximal degree in co-relation 23056. Up to 5710 conditions per place. [2024-05-12 13:15:28,868 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 209 selfloop transitions, 20 changer transitions 0/237 dead transitions. [2024-05-12 13:15:28,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 237 transitions, 2653 flow [2024-05-12 13:15:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:15:28,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:15:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-05-12 13:15:28,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-05-12 13:15:28,871 INFO L175 Difference]: Start difference. First operand has 255 places, 206 transitions, 2084 flow. Second operand 11 states and 170 transitions. [2024-05-12 13:15:28,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 237 transitions, 2653 flow [2024-05-12 13:15:29,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 237 transitions, 2572 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:15:29,251 INFO L231 Difference]: Finished difference. Result has 257 places, 206 transitions, 2046 flow [2024-05-12 13:15:29,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2046, PETRI_PLACES=257, PETRI_TRANSITIONS=206} [2024-05-12 13:15:29,252 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-05-12 13:15:29,252 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 206 transitions, 2046 flow [2024-05-12 13:15:29,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:29,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:29,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:29,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 13:15:29,253 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:29,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:29,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1529061002, now seen corresponding path program 5 times [2024-05-12 13:15:29,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:29,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333428847] [2024-05-12 13:15:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:29,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:30,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333428847] [2024-05-12 13:15:30,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333428847] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:30,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:30,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:15:30,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015479378] [2024-05-12 13:15:30,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:30,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:15:30,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:30,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:15:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:15:30,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:30,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 206 transitions, 2046 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:30,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:30,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:30,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:31,760 INFO L124 PetriNetUnfolderBase]: 3164/6904 cut-off events. [2024-05-12 13:15:31,761 INFO L125 PetriNetUnfolderBase]: For 51459/51459 co-relation queries the response was YES. [2024-05-12 13:15:31,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23281 conditions, 6904 events. 3164/6904 cut-off events. For 51459/51459 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 62801 event pairs, 1768 based on Foata normal form. 6/6540 useless extension candidates. Maximal degree in co-relation 23168. Up to 5716 conditions per place. [2024-05-12 13:15:31,831 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 210 selfloop transitions, 22 changer transitions 0/240 dead transitions. [2024-05-12 13:15:31,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 240 transitions, 2633 flow [2024-05-12 13:15:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:15:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:15:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 13:15:31,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-05-12 13:15:31,832 INFO L175 Difference]: Start difference. First operand has 257 places, 206 transitions, 2046 flow. Second operand 11 states and 173 transitions. [2024-05-12 13:15:31,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 240 transitions, 2633 flow [2024-05-12 13:15:32,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 240 transitions, 2594 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:15:32,274 INFO L231 Difference]: Finished difference. Result has 259 places, 206 transitions, 2054 flow [2024-05-12 13:15:32,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2054, PETRI_PLACES=259, PETRI_TRANSITIONS=206} [2024-05-12 13:15:32,274 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2024-05-12 13:15:32,274 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 206 transitions, 2054 flow [2024-05-12 13:15:32,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:32,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:32,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:32,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 13:15:32,276 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:32,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash -163118280, now seen corresponding path program 6 times [2024-05-12 13:15:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:32,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615946953] [2024-05-12 13:15:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:32,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615946953] [2024-05-12 13:15:33,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615946953] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:33,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:33,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:15:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883615812] [2024-05-12 13:15:33,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:33,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:15:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:15:33,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:15:33,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:33,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 206 transitions, 2054 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:33,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:33,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:33,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:34,843 INFO L124 PetriNetUnfolderBase]: 3201/6983 cut-off events. [2024-05-12 13:15:34,843 INFO L125 PetriNetUnfolderBase]: For 52584/52584 co-relation queries the response was YES. [2024-05-12 13:15:34,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23582 conditions, 6983 events. 3201/6983 cut-off events. For 52584/52584 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 63696 event pairs, 1801 based on Foata normal form. 6/6617 useless extension candidates. Maximal degree in co-relation 23468. Up to 5773 conditions per place. [2024-05-12 13:15:34,911 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 211 selfloop transitions, 28 changer transitions 0/247 dead transitions. [2024-05-12 13:15:34,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 247 transitions, 2681 flow [2024-05-12 13:15:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 13:15:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 13:15:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 202 transitions. [2024-05-12 13:15:34,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41995841995842 [2024-05-12 13:15:34,912 INFO L175 Difference]: Start difference. First operand has 259 places, 206 transitions, 2054 flow. Second operand 13 states and 202 transitions. [2024-05-12 13:15:34,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 247 transitions, 2681 flow [2024-05-12 13:15:35,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 247 transitions, 2638 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:15:35,338 INFO L231 Difference]: Finished difference. Result has 263 places, 206 transitions, 2070 flow [2024-05-12 13:15:35,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2070, PETRI_PLACES=263, PETRI_TRANSITIONS=206} [2024-05-12 13:15:35,338 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-05-12 13:15:35,338 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 206 transitions, 2070 flow [2024-05-12 13:15:35,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:35,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:35,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:35,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 13:15:35,339 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:35,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1545700656, now seen corresponding path program 7 times [2024-05-12 13:15:35,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:35,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971908409] [2024-05-12 13:15:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:35,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:36,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:36,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971908409] [2024-05-12 13:15:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971908409] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:36,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:36,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:15:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875098516] [2024-05-12 13:15:36,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:36,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:15:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:15:36,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:15:36,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:36,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 206 transitions, 2070 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:36,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:36,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:36,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:37,666 INFO L124 PetriNetUnfolderBase]: 3238/7052 cut-off events. [2024-05-12 13:15:37,667 INFO L125 PetriNetUnfolderBase]: For 53652/53652 co-relation queries the response was YES. [2024-05-12 13:15:37,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23864 conditions, 7052 events. 3238/7052 cut-off events. For 53652/53652 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 64334 event pairs, 1846 based on Foata normal form. 6/6707 useless extension candidates. Maximal degree in co-relation 23749. Up to 5905 conditions per place. [2024-05-12 13:15:37,734 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 217 selfloop transitions, 17 changer transitions 0/242 dead transitions. [2024-05-12 13:15:37,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 242 transitions, 2666 flow [2024-05-12 13:15:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:15:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:15:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-05-12 13:15:37,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-05-12 13:15:37,736 INFO L175 Difference]: Start difference. First operand has 263 places, 206 transitions, 2070 flow. Second operand 11 states and 172 transitions. [2024-05-12 13:15:37,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 242 transitions, 2666 flow [2024-05-12 13:15:38,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 242 transitions, 2611 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-05-12 13:15:38,204 INFO L231 Difference]: Finished difference. Result has 263 places, 206 transitions, 2053 flow [2024-05-12 13:15:38,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2053, PETRI_PLACES=263, PETRI_TRANSITIONS=206} [2024-05-12 13:15:38,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-05-12 13:15:38,204 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 206 transitions, 2053 flow [2024-05-12 13:15:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:38,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:38,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:38,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 13:15:38,205 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:38,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1512911362, now seen corresponding path program 8 times [2024-05-12 13:15:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600287493] [2024-05-12 13:15:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:39,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:39,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600287493] [2024-05-12 13:15:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600287493] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:39,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:15:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822636239] [2024-05-12 13:15:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:39,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:15:39,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:39,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:15:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:15:39,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:39,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 206 transitions, 2053 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:39,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:39,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:39,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:40,609 INFO L124 PetriNetUnfolderBase]: 3275/7139 cut-off events. [2024-05-12 13:15:40,609 INFO L125 PetriNetUnfolderBase]: For 54651/54651 co-relation queries the response was YES. [2024-05-12 13:15:40,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24076 conditions, 7139 events. 3275/7139 cut-off events. For 54651/54651 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 65430 event pairs, 1926 based on Foata normal form. 6/6764 useless extension candidates. Maximal degree in co-relation 23960. Up to 6025 conditions per place. [2024-05-12 13:15:40,677 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 209 selfloop transitions, 20 changer transitions 0/237 dead transitions. [2024-05-12 13:15:40,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 237 transitions, 2621 flow [2024-05-12 13:15:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:15:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:15:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-05-12 13:15:40,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-05-12 13:15:40,679 INFO L175 Difference]: Start difference. First operand has 263 places, 206 transitions, 2053 flow. Second operand 11 states and 169 transitions. [2024-05-12 13:15:40,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 237 transitions, 2621 flow [2024-05-12 13:15:41,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 237 transitions, 2496 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-05-12 13:15:41,182 INFO L231 Difference]: Finished difference. Result has 262 places, 206 transitions, 1971 flow [2024-05-12 13:15:41,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1971, PETRI_PLACES=262, PETRI_TRANSITIONS=206} [2024-05-12 13:15:41,183 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-05-12 13:15:41,183 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 206 transitions, 1971 flow [2024-05-12 13:15:41,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:41,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:41,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:41,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 13:15:41,198 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:41,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash -189877350, now seen corresponding path program 9 times [2024-05-12 13:15:41,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:41,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927757366] [2024-05-12 13:15:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:41,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927757366] [2024-05-12 13:15:42,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927757366] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:42,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:42,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:15:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808824922] [2024-05-12 13:15:42,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:42,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:15:42,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:42,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:15:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:15:42,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:15:42,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 206 transitions, 1971 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:42,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:42,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:15:42,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:43,871 INFO L124 PetriNetUnfolderBase]: 3268/7132 cut-off events. [2024-05-12 13:15:43,871 INFO L125 PetriNetUnfolderBase]: For 34132/34132 co-relation queries the response was YES. [2024-05-12 13:15:43,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23197 conditions, 7132 events. 3268/7132 cut-off events. For 34132/34132 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 65356 event pairs, 1885 based on Foata normal form. 6/6758 useless extension candidates. Maximal degree in co-relation 23085. Up to 5956 conditions per place. [2024-05-12 13:15:43,928 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 212 selfloop transitions, 21 changer transitions 0/241 dead transitions. [2024-05-12 13:15:43,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 241 transitions, 2395 flow [2024-05-12 13:15:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:15:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:15:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-05-12 13:15:43,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-05-12 13:15:43,929 INFO L175 Difference]: Start difference. First operand has 262 places, 206 transitions, 1971 flow. Second operand 12 states and 184 transitions. [2024-05-12 13:15:43,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 241 transitions, 2395 flow [2024-05-12 13:15:44,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 241 transitions, 2031 flow, removed 8 selfloop flow, removed 90 redundant places. [2024-05-12 13:15:44,122 INFO L231 Difference]: Finished difference. Result has 182 places, 205 transitions, 1485 flow [2024-05-12 13:15:44,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1485, PETRI_PLACES=182, PETRI_TRANSITIONS=205} [2024-05-12 13:15:44,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-05-12 13:15:44,122 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 205 transitions, 1485 flow [2024-05-12 13:15:44,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:44,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:44,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:44,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 13:15:44,123 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:44,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:44,123 INFO L85 PathProgramCache]: Analyzing trace with hash 474777987, now seen corresponding path program 1 times [2024-05-12 13:15:44,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:44,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779752454] [2024-05-12 13:15:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:44,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:44,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779752454] [2024-05-12 13:15:44,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779752454] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:44,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:44,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:15:44,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885210397] [2024-05-12 13:15:44,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:44,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:15:44,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:44,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:15:44,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:15:44,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-05-12 13:15:44,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 205 transitions, 1485 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:44,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:44,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-05-12 13:15:44,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:44,551 INFO L124 PetriNetUnfolderBase]: 2113/5036 cut-off events. [2024-05-12 13:15:44,552 INFO L125 PetriNetUnfolderBase]: For 4468/4513 co-relation queries the response was YES. [2024-05-12 13:15:44,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14033 conditions, 5036 events. 2113/5036 cut-off events. For 4468/4513 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 44938 event pairs, 453 based on Foata normal form. 354/5141 useless extension candidates. Maximal degree in co-relation 14002. Up to 1631 conditions per place. [2024-05-12 13:15:44,571 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 108 selfloop transitions, 63 changer transitions 1/212 dead transitions. [2024-05-12 13:15:44,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 212 transitions, 1837 flow [2024-05-12 13:15:44,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:15:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:15:44,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-05-12 13:15:44,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5891891891891892 [2024-05-12 13:15:44,572 INFO L175 Difference]: Start difference. First operand has 182 places, 205 transitions, 1485 flow. Second operand 5 states and 109 transitions. [2024-05-12 13:15:44,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 212 transitions, 1837 flow [2024-05-12 13:15:44,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 212 transitions, 1742 flow, removed 20 selfloop flow, removed 16 redundant places. [2024-05-12 13:15:44,591 INFO L231 Difference]: Finished difference. Result has 172 places, 201 transitions, 1562 flow [2024-05-12 13:15:44,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1562, PETRI_PLACES=172, PETRI_TRANSITIONS=201} [2024-05-12 13:15:44,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-05-12 13:15:44,592 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 201 transitions, 1562 flow [2024-05-12 13:15:44,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:44,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:44,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:44,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 13:15:44,592 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:44,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash 333760482, now seen corresponding path program 1 times [2024-05-12 13:15:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892851243] [2024-05-12 13:15:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:44,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:44,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892851243] [2024-05-12 13:15:44,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892851243] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:44,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:44,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:15:44,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242261785] [2024-05-12 13:15:44,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:44,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:44,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:44,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:44,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-05-12 13:15:44,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 201 transitions, 1562 flow. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:44,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:44,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-05-12 13:15:44,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:45,316 INFO L124 PetriNetUnfolderBase]: 1373/3662 cut-off events. [2024-05-12 13:15:45,317 INFO L125 PetriNetUnfolderBase]: For 4110/4129 co-relation queries the response was YES. [2024-05-12 13:15:45,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10521 conditions, 3662 events. 1373/3662 cut-off events. For 4110/4129 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 33076 event pairs, 298 based on Foata normal form. 69/3530 useless extension candidates. Maximal degree in co-relation 10492. Up to 828 conditions per place. [2024-05-12 13:15:45,328 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 41 selfloop transitions, 49 changer transitions 59/227 dead transitions. [2024-05-12 13:15:45,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 227 transitions, 1887 flow [2024-05-12 13:15:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:15:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:15:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-05-12 13:15:45,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378378378378378 [2024-05-12 13:15:45,329 INFO L175 Difference]: Start difference. First operand has 172 places, 201 transitions, 1562 flow. Second operand 10 states and 199 transitions. [2024-05-12 13:15:45,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 227 transitions, 1887 flow [2024-05-12 13:15:45,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 227 transitions, 1682 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 13:15:45,362 INFO L231 Difference]: Finished difference. Result has 178 places, 157 transitions, 1097 flow [2024-05-12 13:15:45,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1097, PETRI_PLACES=178, PETRI_TRANSITIONS=157} [2024-05-12 13:15:45,362 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-05-12 13:15:45,362 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 157 transitions, 1097 flow [2024-05-12 13:15:45,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:45,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:45,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:45,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 13:15:45,372 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:15:45,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash 333302026, now seen corresponding path program 2 times [2024-05-12 13:15:45,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:45,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453940544] [2024-05-12 13:15:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:45,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 13:15:45,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-12 13:15:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 13:15:45,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-12 13:15:45,463 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-12 13:15:45,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-05-12 13:15:45,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-05-12 13:15:45,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-05-12 13:15:45,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-05-12 13:15:45,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-05-12 13:15:45,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-05-12 13:15:45,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-05-12 13:15:45,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 13:15:45,469 INFO L445 BasicCegarLoop]: Path program histogram: [20, 9, 9, 9, 8, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:45,474 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 13:15:45,474 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 13:15:45,541 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 13:15:45,542 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 13:15:45,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 01:15:45 BasicIcfg [2024-05-12 13:15:45,542 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 13:15:45,543 INFO L158 Benchmark]: Toolchain (without parser) took 155715.97ms. Allocated memory was 138.4MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 76.9MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-05-12 13:15:45,543 INFO L158 Benchmark]: Witness Parser took 0.39ms. Allocated memory is still 138.4MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 13:15:45,543 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 13:15:45,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.83ms. Allocated memory is still 138.4MB. Free memory was 76.9MB in the beginning and 43.9MB in the end (delta: 33.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-05-12 13:15:45,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.63ms. Allocated memory is still 138.4MB. Free memory was 43.9MB in the beginning and 41.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-05-12 13:15:45,544 INFO L158 Benchmark]: Boogie Preprocessor took 75.95ms. Allocated memory is still 138.4MB. Free memory was 41.2MB in the beginning and 106.5MB in the end (delta: -65.3MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2024-05-12 13:15:45,545 INFO L158 Benchmark]: RCFGBuilder took 651.70ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 106.4MB in the beginning and 97.6MB in the end (delta: 8.8MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. [2024-05-12 13:15:45,545 INFO L158 Benchmark]: TraceAbstraction took 154353.06ms. Allocated memory was 178.3MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 97.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 985.9MB. Max. memory is 16.1GB. [2024-05-12 13:15:45,546 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 0.39ms. Allocated memory is still 138.4MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.83ms. Allocated memory is still 138.4MB. Free memory was 76.9MB in the beginning and 43.9MB in the end (delta: 33.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.63ms. Allocated memory is still 138.4MB. Free memory was 43.9MB in the beginning and 41.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.95ms. Allocated memory is still 138.4MB. Free memory was 41.2MB in the beginning and 106.5MB in the end (delta: -65.3MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * RCFGBuilder took 651.70ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 106.4MB in the beginning and 97.6MB in the end (delta: 8.8MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. * TraceAbstraction took 154353.06ms. Allocated memory was 178.3MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 97.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 985.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L719] 0 _Bool y$flush_delayed; [L720] 0 int y$mem_tmp; [L721] 0 _Bool y$r_buff0_thd0; [L722] 0 _Bool y$r_buff0_thd1; [L723] 0 _Bool y$r_buff0_thd2; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$read_delayed; [L728] 0 int *y$read_delayed_var; [L729] 0 int y$w_buff0; [L730] 0 _Bool y$w_buff0_used; [L731] 0 int y$w_buff1; [L732] 0 _Bool y$w_buff1_used; [L733] 0 _Bool weak$$choice0; [L734] 0 _Bool weak$$choice2; [L810] 0 pthread_t t585; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t585={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L811] 0 //@ ghost multithreaded = 1; [L811] FCALL, FORK 0 pthread_create(&t585, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t585={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L812] 0 pthread_t t586; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t585={5:0}, t586={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L813] 0 //@ assert (((((((((((((((!multithreaded || (y$r_buff1_thd2 == (_Bool) 0)) && (!multithreaded || (y$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (((0 <= y) && (y <= 1)) && ((y == 0) || (y == 1))))) && (!multithreaded || (((0 <= y$w_buff1) && (y$w_buff1 <= 1)) && ((y$w_buff1 == 0) || (y$w_buff1 == 1))))) && (!multithreaded || ((((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 2)) && (__unbuffered_p1_EAX <= 127)) && (((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)) || (__unbuffered_p1_EAX == 2))))) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || ((((0 <= x) && (x <= 2)) && (x <= 127)) && (((x == 0) || (x == 1)) || (x == 2))))) && (!multithreaded || (y$r_buff0_thd2 == (_Bool) 0))) && (!multithreaded || (((0 <= y$w_buff0) && (y$w_buff0 <= 1)) && ((y$w_buff0 == 0) || (y$w_buff0 == 1))))) && (!multithreaded || (((0 <= y$mem_tmp) && (y$mem_tmp <= 1)) && ((y$mem_tmp == 0) || (y$mem_tmp == 1))))) && (!multithreaded || (y$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EBX) && (__unbuffered_p1_EBX <= 1)) && ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))))) && (!multithreaded || (y$read_delayed_var == 0))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))); [L813] FCALL, FORK 0 pthread_create(&t586, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t585={5:0}, t586={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L738] 1 y$w_buff1 = y$w_buff0 [L739] 1 y$w_buff0 = 1 [L740] 1 y$w_buff1_used = y$w_buff0_used [L741] 1 y$w_buff0_used = (_Bool)1 [L742] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L742] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L743] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L744] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L745] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L746] 1 y$r_buff0_thd1 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L749] 1 x = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L766] 2 x = 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L769] 2 __unbuffered_p1_EAX = x VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L772] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L773] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L774] 2 y$flush_delayed = weak$$choice2 [L775] 2 y$mem_tmp = y [L776] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L777] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L778] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L779] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L780] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L781] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L782] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L783] 2 __unbuffered_p1_EBX = y [L784] 2 y = y$flush_delayed ? y$mem_tmp : y [L785] 2 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L814] 0 //@ assert (((((((((((((((!multithreaded || (y$r_buff1_thd2 == (_Bool) 0)) && (!multithreaded || (y$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (((0 <= y) && (y <= 1)) && ((y == 0) || (y == 1))))) && (!multithreaded || (((0 <= y$w_buff1) && (y$w_buff1 <= 1)) && ((y$w_buff1 == 0) || (y$w_buff1 == 1))))) && (!multithreaded || ((((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 2)) && (__unbuffered_p1_EAX <= 127)) && (((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)) || (__unbuffered_p1_EAX == 2))))) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || ((((0 <= x) && (x <= 2)) && (x <= 127)) && (((x == 0) || (x == 1)) || (x == 2))))) && (!multithreaded || (y$r_buff0_thd2 == (_Bool) 0))) && (!multithreaded || (((0 <= y$w_buff0) && (y$w_buff0 <= 1)) && ((y$w_buff0 == 0) || (y$w_buff0 == 1))))) && (!multithreaded || (((0 <= y$mem_tmp) && (y$mem_tmp <= 1)) && ((y$mem_tmp == 0) || (y$mem_tmp == 1))))) && (!multithreaded || (y$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EBX) && (__unbuffered_p1_EBX <= 1)) && ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))))) && (!multithreaded || (y$read_delayed_var == 0))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))); VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t585={5:0}, t586={3:0}, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L788] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L789] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L790] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L791] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L792] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L752] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L753] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L754] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L755] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L756] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L759] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L795] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L815] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t585={5:0}, t586={3:0}, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L817] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L817] RET 0 assume_abort_if_not(main$tmp_guard0) [L819] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L820] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L821] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L822] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L823] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t585={5:0}, t586={3:0}, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L826] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 2 && __unbuffered_p1_EBX == 0) VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t585={5:0}, t586={3:0}, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L828] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L18] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 813]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 811]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 813]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 7 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: 154.2s, OverallIterations: 91, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 83.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6201 SdHoareTripleChecker+Valid, 23.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5472 mSDsluCounter, 2702 SdHoareTripleChecker+Invalid, 20.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2359 mSDsCounter, 1403 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38616 IncrementalHoareTripleChecker+Invalid, 40019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1403 mSolverCounterUnsat, 343 mSDtfsCounter, 38616 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1008 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1001 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2075 ImplicationChecksByTransitivity, 24.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2100occurred in iteration=81, InterpolantAutomatonStates: 846, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 69.0s InterpolantComputationTime, 1515 NumberOfCodeBlocks, 1515 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 1398 ConstructedInterpolants, 0 QuantifiedInterpolants, 55524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 90 InterpolantComputations, 90 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 RESULT: Ultimate proved your program to be incorrect! [2024-05-12 13:15:45,572 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE