./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe034_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.2024-06-19_11-23-25.files/protection/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe034_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-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:09:27,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:09:27,641 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:09:27,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:09:27,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:09:27,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:09:27,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:09:27,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:09:27,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:09:27,678 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:09:27,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:09:27,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:09:27,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:09:27,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:09:27,680 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:09:27,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:09:27,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:09:27,681 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:09:27,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:09:27,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:09:27,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:09:27,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:09:27,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:09:27,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:09:27,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:09:27,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:09:27,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:09:27,684 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:09:27,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:09:27,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:09:27,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:09:27,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:09:27,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:09:27,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:09:27,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:09:27,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:09:27,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:09:27,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:09:27,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:09:27,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:09:27,688 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:09:27,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:09:27,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:09:27,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 19:09:27,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:09:27,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:09:27,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:09:27,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:09:27,947 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:09:27,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:09:28,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:09:29,183 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:09:29,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:09:29,196 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d39b497/ab2d707814144174b972eacbda9f654a/FLAGee3bb4ed5 [2024-06-27 19:09:29,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d39b497/ab2d707814144174b972eacbda9f654a [2024-06-27 19:09:29,219 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:09:29,219 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:09:29,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 19:09:29,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:09:29,337 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:09:29,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:09:29,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:09:29,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:09:29,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:09:29" (1/2) ... [2024-06-27 19:09:29,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3593df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:29, skipping insertion in model container [2024-06-27 19:09:29,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:09:29" (1/2) ... [2024-06-27 19:09:29,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21b49615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:29, skipping insertion in model container [2024-06-27 19:09:29,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:09:29" (2/2) ... [2024-06-27 19:09:29,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3593df8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29, skipping insertion in model container [2024-06-27 19:09:29,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:09:29" (2/2) ... [2024-06-27 19:09:29,350 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:09:29,440 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:09:29,441 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] (((((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2)) [2024-06-27 19:09:29,441 INFO L97 edCorrectnessWitness]: Location invariant before [L833-L833] (((((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2)) [2024-06-27 19:09:29,442 INFO L97 edCorrectnessWitness]: Location invariant before [L832-L832] (((((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2)) [2024-06-27 19:09:29,442 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:09:29,442 INFO L106 edCorrectnessWitness]: ghost_update [L828-L828] multithreaded = 1; [2024-06-27 19:09:29,481 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:09:29,635 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2024-06-27 19:09:29,782 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:09:29,791 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 19:09:29,824 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:09:29,919 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:09:29,951 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:09:29,952 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29 WrapperNode [2024-06-27 19:09:29,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:09:29,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:09:29,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:09:29,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:09:29,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:29,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:29,990 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-27 19:09:29,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:09:29,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:09:29,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:09:29,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:09:29,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:29,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:30,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:30,013 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 19:09:30,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:30,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:30,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:30,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:30,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:30,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:30,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:09:30,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:09:30,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:09:30,027 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:09:30,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (1/1) ... [2024-06-27 19:09:30,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:09:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:09:30,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 19:09:30,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 19:09:30,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:09:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:09:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:09:30,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:09:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:09:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:09:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:09:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:09:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:09:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:09:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:09:30,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:09:30,118 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:09:30,253 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:09:30,256 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:09:30,576 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:09:30,577 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:09:30,683 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:09:30,683 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:09:30,684 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:09:30 BoogieIcfgContainer [2024-06-27 19:09:30,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:09:30,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:09:30,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:09:30,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:09:30,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:09:29" (1/4) ... [2024-06-27 19:09:30,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a83cd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:09:30, skipping insertion in model container [2024-06-27 19:09:30,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:09:29" (2/4) ... [2024-06-27 19:09:30,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a83cd73 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:09:30, skipping insertion in model container [2024-06-27 19:09:30,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:29" (3/4) ... [2024-06-27 19:09:30,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a83cd73 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:09:30, skipping insertion in model container [2024-06-27 19:09:30,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:09:30" (4/4) ... [2024-06-27 19:09:30,690 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:09:30,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:09:30,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 19:09:30,703 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:09:30,735 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:09:30,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 19:09:30,788 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 19:09:30,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:09:30,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 83 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 19:09:30,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 19:09:30,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 19:09:30,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:09:30,813 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;@181db90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:09:30,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 19:09:30,818 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:09:30,818 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:09:30,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:09:30,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:30,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:09:30,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:30,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash 343427402, now seen corresponding path program 1 times [2024-06-27 19:09:30,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:30,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912217432] [2024-06-27 19:09:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:30,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:31,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912217432] [2024-06-27 19:09:31,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912217432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:31,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:31,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:09:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342222470] [2024-06-27 19:09:31,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:31,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:09:31,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:09:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:09:31,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-27 19:09:31,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-06-27 19:09:31,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:31,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-27 19:09:31,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:32,063 INFO L124 PetriNetUnfolderBase]: 2349/4045 cut-off events. [2024-06-27 19:09:32,063 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 19:09:32,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7523 conditions, 4045 events. 2349/4045 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 27095 event pairs, 1832 based on Foata normal form. 141/3860 useless extension candidates. Maximal degree in co-relation 7511. Up to 3411 conditions per place. [2024-06-27 19:09:32,083 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 39 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-27 19:09:32,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 221 flow [2024-06-27 19:09:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:09:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:09:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 19:09:32,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7152777777777778 [2024-06-27 19:09:32,094 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 103 transitions. [2024-06-27 19:09:32,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 221 flow [2024-06-27 19:09:32,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:09:32,098 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-27 19:09:32,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-27 19:09:32,101 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 19:09:32,101 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-27 19:09:32,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-06-27 19:09:32,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:32,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:32,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:09:32,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:32,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:32,103 INFO L85 PathProgramCache]: Analyzing trace with hash -678695575, now seen corresponding path program 1 times [2024-06-27 19:09:32,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:32,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702058198] [2024-06-27 19:09:32,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:32,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:32,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:32,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702058198] [2024-06-27 19:09:32,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702058198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:32,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:32,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:09:32,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483709215] [2024-06-27 19:09:32,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:32,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:09:32,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:32,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:09:32,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:09:32,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-27 19:09:32,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:32,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:32,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-27 19:09:32,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:32,973 INFO L124 PetriNetUnfolderBase]: 2342/3801 cut-off events. [2024-06-27 19:09:32,974 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-06-27 19:09:32,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8210 conditions, 3801 events. 2342/3801 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 23488 event pairs, 1295 based on Foata normal form. 3/3544 useless extension candidates. Maximal degree in co-relation 8198. Up to 3378 conditions per place. [2024-06-27 19:09:32,990 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 50 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-27 19:09:32,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 315 flow [2024-06-27 19:09:32,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:09:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:09:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-27 19:09:32,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-06-27 19:09:32,995 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 134 transitions. [2024-06-27 19:09:32,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 315 flow [2024-06-27 19:09:32,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:09:32,999 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 177 flow [2024-06-27 19:09:32,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 19:09:32,999 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 19:09:33,000 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 177 flow [2024-06-27 19:09:33,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:33,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:33,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:33,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:09:33,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:33,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash 477542781, now seen corresponding path program 1 times [2024-06-27 19:09:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:33,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346223080] [2024-06-27 19:09:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:33,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346223080] [2024-06-27 19:09:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346223080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:33,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:09:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264235156] [2024-06-27 19:09:33,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:33,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:09:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:09:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:09:33,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:33,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:33,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:33,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:33,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:34,106 INFO L124 PetriNetUnfolderBase]: 3409/5012 cut-off events. [2024-06-27 19:09:34,107 INFO L125 PetriNetUnfolderBase]: For 1913/1913 co-relation queries the response was YES. [2024-06-27 19:09:34,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12423 conditions, 5012 events. 3409/5012 cut-off events. For 1913/1913 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 28097 event pairs, 1605 based on Foata normal form. 4/4818 useless extension candidates. Maximal degree in co-relation 12408. Up to 4866 conditions per place. [2024-06-27 19:09:34,133 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 56 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-27 19:09:34,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 377 flow [2024-06-27 19:09:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:09:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:09:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-06-27 19:09:34,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2024-06-27 19:09:34,135 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 177 flow. Second operand 5 states and 139 transitions. [2024-06-27 19:09:34,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 377 flow [2024-06-27 19:09:34,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 358 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:09:34,137 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 213 flow [2024-06-27 19:09:34,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-27 19:09:34,138 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-27 19:09:34,138 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 213 flow [2024-06-27 19:09:34,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:34,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:34,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:34,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:09:34,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:34,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash 783985063, now seen corresponding path program 1 times [2024-06-27 19:09:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:34,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014851472] [2024-06-27 19:09:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:34,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:34,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014851472] [2024-06-27 19:09:34,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014851472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:34,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:34,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:09:34,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075989057] [2024-06-27 19:09:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:34,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:09:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:34,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:09:34,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:09:34,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 19:09:34,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:34,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:34,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 19:09:34,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:35,444 INFO L124 PetriNetUnfolderBase]: 2968/4595 cut-off events. [2024-06-27 19:09:35,444 INFO L125 PetriNetUnfolderBase]: For 3166/3166 co-relation queries the response was YES. [2024-06-27 19:09:35,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12075 conditions, 4595 events. 2968/4595 cut-off events. For 3166/3166 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 27479 event pairs, 860 based on Foata normal form. 6/4393 useless extension candidates. Maximal degree in co-relation 12059. Up to 4191 conditions per place. [2024-06-27 19:09:35,464 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 74 selfloop transitions, 16 changer transitions 0/104 dead transitions. [2024-06-27 19:09:35,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 521 flow [2024-06-27 19:09:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:09:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:09:35,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-27 19:09:35,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6631944444444444 [2024-06-27 19:09:35,468 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 213 flow. Second operand 6 states and 191 transitions. [2024-06-27 19:09:35,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 521 flow [2024-06-27 19:09:35,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 496 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 19:09:35,472 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 271 flow [2024-06-27 19:09:35,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-06-27 19:09:35,474 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-27 19:09:35,474 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 271 flow [2024-06-27 19:09:35,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:35,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:35,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:35,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:09:35,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:35,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1917509892, now seen corresponding path program 1 times [2024-06-27 19:09:35,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:35,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111577559] [2024-06-27 19:09:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:35,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:35,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111577559] [2024-06-27 19:09:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111577559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:35,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:35,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:09:35,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495753566] [2024-06-27 19:09:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:35,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:09:35,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:09:35,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:09:35,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 48 [2024-06-27 19:09:35,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:35,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:35,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 48 [2024-06-27 19:09:35,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:35,685 INFO L124 PetriNetUnfolderBase]: 849/1718 cut-off events. [2024-06-27 19:09:35,685 INFO L125 PetriNetUnfolderBase]: For 1717/1771 co-relation queries the response was YES. [2024-06-27 19:09:35,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 1718 events. 849/1718 cut-off events. For 1717/1771 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12150 event pairs, 210 based on Foata normal form. 2/1600 useless extension candidates. Maximal degree in co-relation 4074. Up to 999 conditions per place. [2024-06-27 19:09:35,695 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 25 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-06-27 19:09:35,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 307 flow [2024-06-27 19:09:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:09:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:09:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-27 19:09:35,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-06-27 19:09:35,696 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 271 flow. Second operand 3 states and 109 transitions. [2024-06-27 19:09:35,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 307 flow [2024-06-27 19:09:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 278 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 19:09:35,699 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 212 flow [2024-06-27 19:09:35,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-27 19:09:35,700 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-27 19:09:35,700 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 212 flow [2024-06-27 19:09:35,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:35,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:35,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:35,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:09:35,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:35,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash -19661826, now seen corresponding path program 1 times [2024-06-27 19:09:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907840505] [2024-06-27 19:09:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:35,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:36,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:36,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907840505] [2024-06-27 19:09:36,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907840505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:36,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:36,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:09:36,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955104387] [2024-06-27 19:09:36,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:36,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:09:36,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:36,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:09:36,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:09:36,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:36,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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) [2024-06-27 19:09:36,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:36,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:36,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:36,887 INFO L124 PetriNetUnfolderBase]: 2962/4489 cut-off events. [2024-06-27 19:09:36,888 INFO L125 PetriNetUnfolderBase]: For 5710/5710 co-relation queries the response was YES. [2024-06-27 19:09:36,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12389 conditions, 4489 events. 2962/4489 cut-off events. For 5710/5710 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 25490 event pairs, 884 based on Foata normal form. 4/4486 useless extension candidates. Maximal degree in co-relation 12371. Up to 4116 conditions per place. [2024-06-27 19:09:36,990 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 68 selfloop transitions, 16 changer transitions 4/100 dead transitions. [2024-06-27 19:09:36,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 530 flow [2024-06-27 19:09:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:09:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:09:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-27 19:09:36,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-27 19:09:36,991 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 212 flow. Second operand 6 states and 171 transitions. [2024-06-27 19:09:36,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 530 flow [2024-06-27 19:09:36,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:09:36,996 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 278 flow [2024-06-27 19:09:36,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-27 19:09:36,997 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-27 19:09:36,997 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 278 flow [2024-06-27 19:09:36,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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) [2024-06-27 19:09:36,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:36,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:36,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:09:36,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:36,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash -12757506, now seen corresponding path program 2 times [2024-06-27 19:09:36,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:36,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77527534] [2024-06-27 19:09:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:36,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:37,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:37,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77527534] [2024-06-27 19:09:37,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77527534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:37,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:37,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:09:37,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72386476] [2024-06-27 19:09:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:37,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:09:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:09:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:09:37,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:37,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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) [2024-06-27 19:09:37,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:37,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:37,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:38,348 INFO L124 PetriNetUnfolderBase]: 2581/3932 cut-off events. [2024-06-27 19:09:38,348 INFO L125 PetriNetUnfolderBase]: For 6458/6458 co-relation queries the response was YES. [2024-06-27 19:09:38,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11612 conditions, 3932 events. 2581/3932 cut-off events. For 6458/6458 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 22049 event pairs, 809 based on Foata normal form. 4/3930 useless extension candidates. Maximal degree in co-relation 11592. Up to 3601 conditions per place. [2024-06-27 19:09:38,368 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 62 selfloop transitions, 16 changer transitions 0/90 dead transitions. [2024-06-27 19:09:38,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 500 flow [2024-06-27 19:09:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:09:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:09:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 19:09:38,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590277777777778 [2024-06-27 19:09:38,370 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 278 flow. Second operand 6 states and 161 transitions. [2024-06-27 19:09:38,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 500 flow [2024-06-27 19:09:38,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 470 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 19:09:38,378 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 288 flow [2024-06-27 19:09:38,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-06-27 19:09:38,379 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-27 19:09:38,379 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 288 flow [2024-06-27 19:09:38,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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) [2024-06-27 19:09:38,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:38,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:38,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:09:38,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:38,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:38,380 INFO L85 PathProgramCache]: Analyzing trace with hash 186031947, now seen corresponding path program 1 times [2024-06-27 19:09:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:38,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918313073] [2024-06-27 19:09:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:38,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:38,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:38,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918313073] [2024-06-27 19:09:38,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918313073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:38,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:38,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:09:38,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462928441] [2024-06-27 19:09:38,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:38,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:09:38,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:38,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:09:38,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:09:39,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:09:39,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:39,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:39,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:09:39,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:39,441 INFO L124 PetriNetUnfolderBase]: 2404/4282 cut-off events. [2024-06-27 19:09:39,441 INFO L125 PetriNetUnfolderBase]: For 6743/6743 co-relation queries the response was YES. [2024-06-27 19:09:39,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11534 conditions, 4282 events. 2404/4282 cut-off events. For 6743/6743 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 28539 event pairs, 1155 based on Foata normal form. 1/4127 useless extension candidates. Maximal degree in co-relation 11512. Up to 3475 conditions per place. [2024-06-27 19:09:39,463 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 57 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2024-06-27 19:09:39,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 493 flow [2024-06-27 19:09:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:09:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:09:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 19:09:39,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 19:09:39,465 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 288 flow. Second operand 5 states and 130 transitions. [2024-06-27 19:09:39,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 493 flow [2024-06-27 19:09:39,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 443 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 19:09:39,470 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 322 flow [2024-06-27 19:09:39,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-27 19:09:39,473 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-27 19:09:39,473 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 322 flow [2024-06-27 19:09:39,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:39,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:39,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:39,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:09:39,474 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:39,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:39,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1402630307, now seen corresponding path program 1 times [2024-06-27 19:09:39,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:39,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416632542] [2024-06-27 19:09:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:39,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:40,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:40,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416632542] [2024-06-27 19:09:40,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416632542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:40,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:40,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:09:40,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30114500] [2024-06-27 19:09:40,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:40,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:09:40,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:40,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:09:40,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:09:40,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:40,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:40,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:40,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:40,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:40,795 INFO L124 PetriNetUnfolderBase]: 2629/4442 cut-off events. [2024-06-27 19:09:40,795 INFO L125 PetriNetUnfolderBase]: For 8873/8873 co-relation queries the response was YES. [2024-06-27 19:09:40,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13012 conditions, 4442 events. 2629/4442 cut-off events. For 8873/8873 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 27981 event pairs, 1017 based on Foata normal form. 4/4293 useless extension candidates. Maximal degree in co-relation 12989. Up to 3722 conditions per place. [2024-06-27 19:09:40,819 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 83 selfloop transitions, 17 changer transitions 0/112 dead transitions. [2024-06-27 19:09:40,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 646 flow [2024-06-27 19:09:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:09:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:09:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-27 19:09:40,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-06-27 19:09:40,820 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 322 flow. Second operand 7 states and 190 transitions. [2024-06-27 19:09:40,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 646 flow [2024-06-27 19:09:40,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 112 transitions, 627 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 19:09:40,825 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 373 flow [2024-06-27 19:09:40,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-06-27 19:09:40,826 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-27 19:09:40,826 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 373 flow [2024-06-27 19:09:40,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:40,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:40,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:40,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:09:40,827 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:40,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:40,827 INFO L85 PathProgramCache]: Analyzing trace with hash 665179537, now seen corresponding path program 2 times [2024-06-27 19:09:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:40,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670473519] [2024-06-27 19:09:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:40,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:41,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:41,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670473519] [2024-06-27 19:09:41,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670473519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:41,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:41,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:09:41,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738154104] [2024-06-27 19:09:41,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:41,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:09:41,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:41,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:09:41,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:09:41,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:41,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 373 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:41,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:41,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:41,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:42,150 INFO L124 PetriNetUnfolderBase]: 2675/4421 cut-off events. [2024-06-27 19:09:42,150 INFO L125 PetriNetUnfolderBase]: For 11417/11417 co-relation queries the response was YES. [2024-06-27 19:09:42,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13986 conditions, 4421 events. 2675/4421 cut-off events. For 11417/11417 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 27103 event pairs, 840 based on Foata normal form. 4/4293 useless extension candidates. Maximal degree in co-relation 13961. Up to 3583 conditions per place. [2024-06-27 19:09:42,177 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 81 selfloop transitions, 28 changer transitions 0/121 dead transitions. [2024-06-27 19:09:42,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 785 flow [2024-06-27 19:09:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:09:42,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:09:42,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 19:09:42,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 19:09:42,179 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 373 flow. Second operand 7 states and 196 transitions. [2024-06-27 19:09:42,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 785 flow [2024-06-27 19:09:42,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 739 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 19:09:42,186 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 453 flow [2024-06-27 19:09:42,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-27 19:09:42,187 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 19:09:42,187 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 453 flow [2024-06-27 19:09:42,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:42,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:42,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:42,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:09:42,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:42,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash 624991581, now seen corresponding path program 3 times [2024-06-27 19:09:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:42,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340215250] [2024-06-27 19:09:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:42,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:42,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:42,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340215250] [2024-06-27 19:09:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340215250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:42,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:42,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:09:42,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661622621] [2024-06-27 19:09:42,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:42,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:09:42,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:42,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:09:42,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:09:42,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:42,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 453 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:42,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:42,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:42,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:43,429 INFO L124 PetriNetUnfolderBase]: 2665/4123 cut-off events. [2024-06-27 19:09:43,429 INFO L125 PetriNetUnfolderBase]: For 14212/14212 co-relation queries the response was YES. [2024-06-27 19:09:43,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14371 conditions, 4123 events. 2665/4123 cut-off events. For 14212/14212 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 23702 event pairs, 786 based on Foata normal form. 4/4089 useless extension candidates. Maximal degree in co-relation 14345. Up to 3575 conditions per place. [2024-06-27 19:09:43,452 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 75 selfloop transitions, 28 changer transitions 0/115 dead transitions. [2024-06-27 19:09:43,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 753 flow [2024-06-27 19:09:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:09:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:09:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-27 19:09:43,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-06-27 19:09:43,454 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 453 flow. Second operand 7 states and 190 transitions. [2024-06-27 19:09:43,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 753 flow [2024-06-27 19:09:43,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 115 transitions, 699 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 19:09:43,467 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 463 flow [2024-06-27 19:09:43,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-06-27 19:09:43,467 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-27 19:09:43,467 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 463 flow [2024-06-27 19:09:43,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:43,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:43,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:43,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:09:43,468 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:43,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:43,469 INFO L85 PathProgramCache]: Analyzing trace with hash 717425403, now seen corresponding path program 1 times [2024-06-27 19:09:43,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:43,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651999684] [2024-06-27 19:09:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:43,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:44,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:44,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651999684] [2024-06-27 19:09:44,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651999684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:44,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:44,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:09:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545747648] [2024-06-27 19:09:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:44,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:09:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:09:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:09:44,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:44,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 463 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:44,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:44,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:44,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:44,928 INFO L124 PetriNetUnfolderBase]: 2657/4363 cut-off events. [2024-06-27 19:09:44,929 INFO L125 PetriNetUnfolderBase]: For 15692/15692 co-relation queries the response was YES. [2024-06-27 19:09:44,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14764 conditions, 4363 events. 2657/4363 cut-off events. For 15692/15692 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 27096 event pairs, 1044 based on Foata normal form. 4/4272 useless extension candidates. Maximal degree in co-relation 14736. Up to 3772 conditions per place. [2024-06-27 19:09:44,953 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 89 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-06-27 19:09:44,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 117 transitions, 802 flow [2024-06-27 19:09:44,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:09:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:09:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 19:09:44,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 19:09:44,955 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 463 flow. Second operand 7 states and 183 transitions. [2024-06-27 19:09:44,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 117 transitions, 802 flow [2024-06-27 19:09:44,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 724 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:09:44,966 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 478 flow [2024-06-27 19:09:44,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2024-06-27 19:09:44,967 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-27 19:09:44,967 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 478 flow [2024-06-27 19:09:44,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:44,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:44,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:44,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:09:44,968 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:44,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1458618720, now seen corresponding path program 1 times [2024-06-27 19:09:44,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:44,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646966139] [2024-06-27 19:09:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:44,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:45,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:45,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646966139] [2024-06-27 19:09:45,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646966139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:45,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:45,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:09:45,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333766603] [2024-06-27 19:09:45,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:45,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:09:45,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:45,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:09:45,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:09:45,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:09:45,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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) [2024-06-27 19:09:45,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:45,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:09:45,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:46,070 INFO L124 PetriNetUnfolderBase]: 2481/4224 cut-off events. [2024-06-27 19:09:46,071 INFO L125 PetriNetUnfolderBase]: For 18024/18032 co-relation queries the response was YES. [2024-06-27 19:09:46,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14655 conditions, 4224 events. 2481/4224 cut-off events. For 18024/18032 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 27368 event pairs, 1052 based on Foata normal form. 7/4093 useless extension candidates. Maximal degree in co-relation 14625. Up to 3487 conditions per place. [2024-06-27 19:09:46,096 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 79 selfloop transitions, 21 changer transitions 0/116 dead transitions. [2024-06-27 19:09:46,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 836 flow [2024-06-27 19:09:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:09:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:09:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 19:09:46,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-27 19:09:46,098 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 478 flow. Second operand 6 states and 159 transitions. [2024-06-27 19:09:46,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 836 flow [2024-06-27 19:09:46,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 116 transitions, 789 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 19:09:46,109 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 611 flow [2024-06-27 19:09:46,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=611, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-06-27 19:09:46,110 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-27 19:09:46,110 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 611 flow [2024-06-27 19:09:46,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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) [2024-06-27 19:09:46,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:46,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:46,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:09:46,111 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:46,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1611059146, now seen corresponding path program 1 times [2024-06-27 19:09:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:46,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637296285] [2024-06-27 19:09:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:46,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:46,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:46,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637296285] [2024-06-27 19:09:46,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637296285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:46,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:46,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:09:46,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642302401] [2024-06-27 19:09:46,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:46,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:09:46,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:46,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:09:46,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:09:46,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:09:46,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 611 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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) [2024-06-27 19:09:46,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:46,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:09:46,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:47,145 INFO L124 PetriNetUnfolderBase]: 2543/4342 cut-off events. [2024-06-27 19:09:47,146 INFO L125 PetriNetUnfolderBase]: For 22019/22033 co-relation queries the response was YES. [2024-06-27 19:09:47,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16374 conditions, 4342 events. 2543/4342 cut-off events. For 22019/22033 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 28026 event pairs, 1085 based on Foata normal form. 12/4216 useless extension candidates. Maximal degree in co-relation 16341. Up to 3622 conditions per place. [2024-06-27 19:09:47,172 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 95 selfloop transitions, 24 changer transitions 0/135 dead transitions. [2024-06-27 19:09:47,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 1011 flow [2024-06-27 19:09:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:09:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:09:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 19:09:47,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-27 19:09:47,173 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 611 flow. Second operand 7 states and 186 transitions. [2024-06-27 19:09:47,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 1011 flow [2024-06-27 19:09:47,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 983 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 19:09:47,190 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 752 flow [2024-06-27 19:09:47,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2024-06-27 19:09:47,191 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-27 19:09:47,191 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 752 flow [2024-06-27 19:09:47,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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) [2024-06-27 19:09:47,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:47,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:47,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:09:47,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:47,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1611472210, now seen corresponding path program 2 times [2024-06-27 19:09:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339445096] [2024-06-27 19:09:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:47,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:47,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339445096] [2024-06-27 19:09:47,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339445096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:47,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:47,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:09:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078356437] [2024-06-27 19:09:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:47,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:09:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:09:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:09:47,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:09:47,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 752 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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) [2024-06-27 19:09:47,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:47,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:09:47,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:48,252 INFO L124 PetriNetUnfolderBase]: 2557/4378 cut-off events. [2024-06-27 19:09:48,252 INFO L125 PetriNetUnfolderBase]: For 24389/24433 co-relation queries the response was YES. [2024-06-27 19:09:48,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16913 conditions, 4378 events. 2557/4378 cut-off events. For 24389/24433 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 28455 event pairs, 1058 based on Foata normal form. 12/4249 useless extension candidates. Maximal degree in co-relation 16876. Up to 3622 conditions per place. [2024-06-27 19:09:48,283 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 93 selfloop transitions, 24 changer transitions 0/133 dead transitions. [2024-06-27 19:09:48,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 133 transitions, 1090 flow [2024-06-27 19:09:48,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:09:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:09:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 19:09:48,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-27 19:09:48,285 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 752 flow. Second operand 6 states and 159 transitions. [2024-06-27 19:09:48,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 133 transitions, 1090 flow [2024-06-27 19:09:48,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 1032 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 19:09:48,305 INFO L231 Difference]: Finished difference. Result has 94 places, 111 transitions, 796 flow [2024-06-27 19:09:48,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=796, PETRI_PLACES=94, PETRI_TRANSITIONS=111} [2024-06-27 19:09:48,305 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-27 19:09:48,305 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 111 transitions, 796 flow [2024-06-27 19:09:48,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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) [2024-06-27 19:09:48,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:48,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:48,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:09:48,306 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:48,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1611890710, now seen corresponding path program 3 times [2024-06-27 19:09:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:48,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503010674] [2024-06-27 19:09:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503010674] [2024-06-27 19:09:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503010674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:48,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:09:48,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743944783] [2024-06-27 19:09:48,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:48,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:09:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:09:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:09:48,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:09:48,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 111 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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) [2024-06-27 19:09:48,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:48,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:09:48,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:49,338 INFO L124 PetriNetUnfolderBase]: 2549/4358 cut-off events. [2024-06-27 19:09:49,338 INFO L125 PetriNetUnfolderBase]: For 26014/26033 co-relation queries the response was YES. [2024-06-27 19:09:49,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17009 conditions, 4358 events. 2549/4358 cut-off events. For 26014/26033 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 28325 event pairs, 1058 based on Foata normal form. 12/4226 useless extension candidates. Maximal degree in co-relation 16972. Up to 3529 conditions per place. [2024-06-27 19:09:49,366 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 83 selfloop transitions, 31 changer transitions 0/130 dead transitions. [2024-06-27 19:09:49,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 1084 flow [2024-06-27 19:09:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:09:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:09:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-27 19:09:49,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-27 19:09:49,367 INFO L175 Difference]: Start difference. First operand has 94 places, 111 transitions, 796 flow. Second operand 6 states and 158 transitions. [2024-06-27 19:09:49,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 1084 flow [2024-06-27 19:09:49,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 130 transitions, 1014 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 19:09:49,390 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 796 flow [2024-06-27 19:09:49,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=796, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-06-27 19:09:49,393 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-27 19:09:49,393 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 796 flow [2024-06-27 19:09:49,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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) [2024-06-27 19:09:49,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:49,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:49,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:09:49,393 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:49,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:49,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2034164216, now seen corresponding path program 1 times [2024-06-27 19:09:49,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:49,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588030648] [2024-06-27 19:09:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:49,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:49,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588030648] [2024-06-27 19:09:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588030648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:49,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:49,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:09:49,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691627113] [2024-06-27 19:09:49,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:49,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:09:49,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:09:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:09:49,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:49,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:49,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:49,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:49,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:50,444 INFO L124 PetriNetUnfolderBase]: 2841/4764 cut-off events. [2024-06-27 19:09:50,444 INFO L125 PetriNetUnfolderBase]: For 25872/25874 co-relation queries the response was YES. [2024-06-27 19:09:50,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18364 conditions, 4764 events. 2841/4764 cut-off events. For 25872/25874 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 30467 event pairs, 1100 based on Foata normal form. 2/4641 useless extension candidates. Maximal degree in co-relation 18326. Up to 4062 conditions per place. [2024-06-27 19:09:50,473 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 114 selfloop transitions, 13 changer transitions 0/139 dead transitions. [2024-06-27 19:09:50,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 139 transitions, 1169 flow [2024-06-27 19:09:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:09:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:09:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 19:09:50,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 19:09:50,475 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 796 flow. Second operand 6 states and 152 transitions. [2024-06-27 19:09:50,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 139 transitions, 1169 flow [2024-06-27 19:09:50,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 139 transitions, 1085 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:09:50,497 INFO L231 Difference]: Finished difference. Result has 98 places, 118 transitions, 816 flow [2024-06-27 19:09:50,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=816, PETRI_PLACES=98, PETRI_TRANSITIONS=118} [2024-06-27 19:09:50,497 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-06-27 19:09:50,497 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 118 transitions, 816 flow [2024-06-27 19:09:50,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:50,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:50,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:50,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:09:50,498 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:50,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2027468216, now seen corresponding path program 2 times [2024-06-27 19:09:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:50,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865838117] [2024-06-27 19:09:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:50,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:51,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:51,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865838117] [2024-06-27 19:09:51,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865838117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:51,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:51,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:09:51,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434607541] [2024-06-27 19:09:51,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:51,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:09:51,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:51,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:09:51,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:09:51,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:51,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 118 transitions, 816 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:51,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:51,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:51,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:51,586 INFO L124 PetriNetUnfolderBase]: 2860/4786 cut-off events. [2024-06-27 19:09:51,586 INFO L125 PetriNetUnfolderBase]: For 29500/29502 co-relation queries the response was YES. [2024-06-27 19:09:51,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19104 conditions, 4786 events. 2860/4786 cut-off events. For 29500/29502 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 30602 event pairs, 1093 based on Foata normal form. 2/4662 useless extension candidates. Maximal degree in co-relation 19064. Up to 4057 conditions per place. [2024-06-27 19:09:51,619 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 112 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2024-06-27 19:09:51,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 142 transitions, 1182 flow [2024-06-27 19:09:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:09:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:09:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 19:09:51,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 19:09:51,621 INFO L175 Difference]: Start difference. First operand has 98 places, 118 transitions, 816 flow. Second operand 6 states and 153 transitions. [2024-06-27 19:09:51,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 142 transitions, 1182 flow [2024-06-27 19:09:51,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 142 transitions, 1139 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 19:09:51,670 INFO L231 Difference]: Finished difference. Result has 101 places, 121 transitions, 855 flow [2024-06-27 19:09:51,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=855, PETRI_PLACES=101, PETRI_TRANSITIONS=121} [2024-06-27 19:09:51,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-27 19:09:51,670 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 121 transitions, 855 flow [2024-06-27 19:09:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:51,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:51,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:51,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:09:51,671 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:51,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2027458296, now seen corresponding path program 1 times [2024-06-27 19:09:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:51,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215305318] [2024-06-27 19:09:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:51,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:52,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:52,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215305318] [2024-06-27 19:09:52,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215305318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:52,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:52,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:09:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564285972] [2024-06-27 19:09:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:52,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:09:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:09:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:09:52,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:09:52,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 121 transitions, 855 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:52,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:52,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:09:52,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:53,179 INFO L124 PetriNetUnfolderBase]: 2617/4612 cut-off events. [2024-06-27 19:09:53,179 INFO L125 PetriNetUnfolderBase]: For 32667/32702 co-relation queries the response was YES. [2024-06-27 19:09:53,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18834 conditions, 4612 events. 2617/4612 cut-off events. For 32667/32702 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 30779 event pairs, 1043 based on Foata normal form. 21/4445 useless extension candidates. Maximal degree in co-relation 18793. Up to 3596 conditions per place. [2024-06-27 19:09:53,204 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 96 selfloop transitions, 37 changer transitions 0/149 dead transitions. [2024-06-27 19:09:53,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 149 transitions, 1243 flow [2024-06-27 19:09:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:09:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:09:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 19:09:53,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 19:09:53,206 INFO L175 Difference]: Start difference. First operand has 101 places, 121 transitions, 855 flow. Second operand 7 states and 183 transitions. [2024-06-27 19:09:53,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 149 transitions, 1243 flow [2024-06-27 19:09:53,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 149 transitions, 1183 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 19:09:53,226 INFO L231 Difference]: Finished difference. Result has 104 places, 125 transitions, 924 flow [2024-06-27 19:09:53,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=924, PETRI_PLACES=104, PETRI_TRANSITIONS=125} [2024-06-27 19:09:53,227 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-27 19:09:53,227 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 125 transitions, 924 flow [2024-06-27 19:09:53,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:53,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:53,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:53,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:09:53,228 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:53,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash -197283524, now seen corresponding path program 1 times [2024-06-27 19:09:53,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:53,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131896888] [2024-06-27 19:09:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:53,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:53,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:53,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131896888] [2024-06-27 19:09:53,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131896888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:53,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:53,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:09:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821483132] [2024-06-27 19:09:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:53,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:09:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:09:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:09:53,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:53,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 125 transitions, 924 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:53,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:53,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:53,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:54,963 INFO L124 PetriNetUnfolderBase]: 3229/5567 cut-off events. [2024-06-27 19:09:54,963 INFO L125 PetriNetUnfolderBase]: For 44357/44357 co-relation queries the response was YES. [2024-06-27 19:09:54,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23780 conditions, 5567 events. 3229/5567 cut-off events. For 44357/44357 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 37124 event pairs, 893 based on Foata normal form. 16/5411 useless extension candidates. Maximal degree in co-relation 23738. Up to 4076 conditions per place. [2024-06-27 19:09:55,039 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 153 selfloop transitions, 31 changer transitions 0/196 dead transitions. [2024-06-27 19:09:55,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 196 transitions, 1642 flow [2024-06-27 19:09:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:09:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:09:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-27 19:09:55,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-06-27 19:09:55,042 INFO L175 Difference]: Start difference. First operand has 104 places, 125 transitions, 924 flow. Second operand 9 states and 250 transitions. [2024-06-27 19:09:55,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 196 transitions, 1642 flow [2024-06-27 19:09:55,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 196 transitions, 1537 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:09:55,075 INFO L231 Difference]: Finished difference. Result has 108 places, 127 transitions, 929 flow [2024-06-27 19:09:55,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=929, PETRI_PLACES=108, PETRI_TRANSITIONS=127} [2024-06-27 19:09:55,075 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-27 19:09:55,076 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 127 transitions, 929 flow [2024-06-27 19:09:55,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:55,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:55,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:55,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:09:55,077 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:55,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1813481968, now seen corresponding path program 2 times [2024-06-27 19:09:55,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:55,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444837715] [2024-06-27 19:09:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:55,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:55,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444837715] [2024-06-27 19:09:55,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444837715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:55,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:55,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:09:55,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12788398] [2024-06-27 19:09:55,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:55,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:09:55,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:55,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:09:55,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:09:55,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:55,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 127 transitions, 929 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:55,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:55,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:55,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:56,699 INFO L124 PetriNetUnfolderBase]: 3193/5367 cut-off events. [2024-06-27 19:09:56,700 INFO L125 PetriNetUnfolderBase]: For 45376/45376 co-relation queries the response was YES. [2024-06-27 19:09:56,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23252 conditions, 5367 events. 3193/5367 cut-off events. For 45376/45376 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 35045 event pairs, 1146 based on Foata normal form. 20/5247 useless extension candidates. Maximal degree in co-relation 23209. Up to 4292 conditions per place. [2024-06-27 19:09:56,742 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 142 selfloop transitions, 28 changer transitions 0/182 dead transitions. [2024-06-27 19:09:56,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 182 transitions, 1471 flow [2024-06-27 19:09:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:09:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:09:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-27 19:09:56,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-27 19:09:56,744 INFO L175 Difference]: Start difference. First operand has 108 places, 127 transitions, 929 flow. Second operand 8 states and 219 transitions. [2024-06-27 19:09:56,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 182 transitions, 1471 flow [2024-06-27 19:09:56,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 182 transitions, 1425 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:09:56,789 INFO L231 Difference]: Finished difference. Result has 111 places, 127 transitions, 946 flow [2024-06-27 19:09:56,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=946, PETRI_PLACES=111, PETRI_TRANSITIONS=127} [2024-06-27 19:09:56,790 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 19:09:56,790 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 127 transitions, 946 flow [2024-06-27 19:09:56,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:56,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:56,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:56,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:09:56,791 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:56,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash 862763290, now seen corresponding path program 3 times [2024-06-27 19:09:56,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:56,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480695031] [2024-06-27 19:09:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:56,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:57,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480695031] [2024-06-27 19:09:57,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480695031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:57,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:57,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:09:57,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441574585] [2024-06-27 19:09:57,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:57,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:09:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:57,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:09:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:09:57,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:57,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 127 transitions, 946 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:57,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:57,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:57,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:58,376 INFO L124 PetriNetUnfolderBase]: 3360/5659 cut-off events. [2024-06-27 19:09:58,376 INFO L125 PetriNetUnfolderBase]: For 49941/49943 co-relation queries the response was YES. [2024-06-27 19:09:58,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24688 conditions, 5659 events. 3360/5659 cut-off events. For 49941/49943 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 37411 event pairs, 1097 based on Foata normal form. 20/5528 useless extension candidates. Maximal degree in co-relation 24643. Up to 4345 conditions per place. [2024-06-27 19:09:58,475 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 126 selfloop transitions, 43 changer transitions 0/181 dead transitions. [2024-06-27 19:09:58,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 181 transitions, 1506 flow [2024-06-27 19:09:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:09:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:09:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-27 19:09:58,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807291666666666 [2024-06-27 19:09:58,476 INFO L175 Difference]: Start difference. First operand has 111 places, 127 transitions, 946 flow. Second operand 8 states and 223 transitions. [2024-06-27 19:09:58,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 181 transitions, 1506 flow [2024-06-27 19:09:58,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 181 transitions, 1443 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:09:58,512 INFO L231 Difference]: Finished difference. Result has 112 places, 128 transitions, 998 flow [2024-06-27 19:09:58,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=998, PETRI_PLACES=112, PETRI_TRANSITIONS=128} [2024-06-27 19:09:58,512 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-27 19:09:58,512 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 128 transitions, 998 flow [2024-06-27 19:09:58,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:58,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:58,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:58,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:09:58,514 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:58,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:58,515 INFO L85 PathProgramCache]: Analyzing trace with hash 869443418, now seen corresponding path program 1 times [2024-06-27 19:09:58,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:58,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075909338] [2024-06-27 19:09:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:58,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:59,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:59,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075909338] [2024-06-27 19:09:59,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075909338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:59,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:09:59,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671748694] [2024-06-27 19:09:59,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:59,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:09:59,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:59,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:09:59,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:09:59,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:09:59,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 128 transitions, 998 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:59,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:59,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:09:59,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:00,216 INFO L124 PetriNetUnfolderBase]: 3397/5759 cut-off events. [2024-06-27 19:10:00,216 INFO L125 PetriNetUnfolderBase]: For 52590/52590 co-relation queries the response was YES. [2024-06-27 19:10:00,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25349 conditions, 5759 events. 3397/5759 cut-off events. For 52590/52590 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 38427 event pairs, 1134 based on Foata normal form. 4/5604 useless extension candidates. Maximal degree in co-relation 25303. Up to 4756 conditions per place. [2024-06-27 19:10:00,255 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 142 selfloop transitions, 31 changer transitions 0/185 dead transitions. [2024-06-27 19:10:00,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 185 transitions, 1579 flow [2024-06-27 19:10:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 19:10:00,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 19:10:00,257 INFO L175 Difference]: Start difference. First operand has 112 places, 128 transitions, 998 flow. Second operand 8 states and 216 transitions. [2024-06-27 19:10:00,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 185 transitions, 1579 flow [2024-06-27 19:10:00,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 185 transitions, 1484 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:10:00,298 INFO L231 Difference]: Finished difference. Result has 115 places, 133 transitions, 1031 flow [2024-06-27 19:10:00,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1031, PETRI_PLACES=115, PETRI_TRANSITIONS=133} [2024-06-27 19:10:00,299 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-27 19:10:00,299 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 133 transitions, 1031 flow [2024-06-27 19:10:00,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:00,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:00,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:10:00,300 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:00,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash -678457156, now seen corresponding path program 4 times [2024-06-27 19:10:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:00,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411803778] [2024-06-27 19:10:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:00,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:00,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411803778] [2024-06-27 19:10:00,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411803778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:00,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:00,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:00,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333049051] [2024-06-27 19:10:00,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:00,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:00,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:00,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:00,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:00,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:00,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 133 transitions, 1031 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:00,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:00,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:00,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:02,007 INFO L124 PetriNetUnfolderBase]: 3474/5816 cut-off events. [2024-06-27 19:10:02,008 INFO L125 PetriNetUnfolderBase]: For 57548/57548 co-relation queries the response was YES. [2024-06-27 19:10:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26280 conditions, 5816 events. 3474/5816 cut-off events. For 57548/57548 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 38322 event pairs, 1083 based on Foata normal form. 20/5686 useless extension candidates. Maximal degree in co-relation 26232. Up to 4523 conditions per place. [2024-06-27 19:10:02,050 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 128 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-27 19:10:02,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 184 transitions, 1595 flow [2024-06-27 19:10:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-27 19:10:02,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-27 19:10:02,051 INFO L175 Difference]: Start difference. First operand has 115 places, 133 transitions, 1031 flow. Second operand 8 states and 219 transitions. [2024-06-27 19:10:02,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 184 transitions, 1595 flow [2024-06-27 19:10:02,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 184 transitions, 1514 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 19:10:02,098 INFO L231 Difference]: Finished difference. Result has 118 places, 134 transitions, 1071 flow [2024-06-27 19:10:02,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1071, PETRI_PLACES=118, PETRI_TRANSITIONS=134} [2024-06-27 19:10:02,098 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-27 19:10:02,098 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 134 transitions, 1071 flow [2024-06-27 19:10:02,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:02,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:02,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:02,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:10:02,099 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:02,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2013809200, now seen corresponding path program 2 times [2024-06-27 19:10:02,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:02,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645319640] [2024-06-27 19:10:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:02,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:02,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645319640] [2024-06-27 19:10:02,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645319640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:02,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:02,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:02,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673326777] [2024-06-27 19:10:02,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:02,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:02,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:02,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:02,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 134 transitions, 1071 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:02,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:02,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:02,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:03,826 INFO L124 PetriNetUnfolderBase]: 3534/5974 cut-off events. [2024-06-27 19:10:03,827 INFO L125 PetriNetUnfolderBase]: For 60225/60225 co-relation queries the response was YES. [2024-06-27 19:10:03,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27086 conditions, 5974 events. 3534/5974 cut-off events. For 60225/60225 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39904 event pairs, 1170 based on Foata normal form. 4/5822 useless extension candidates. Maximal degree in co-relation 27037. Up to 4958 conditions per place. [2024-06-27 19:10:03,870 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 142 selfloop transitions, 34 changer transitions 0/188 dead transitions. [2024-06-27 19:10:03,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 188 transitions, 1656 flow [2024-06-27 19:10:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 19:10:03,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-27 19:10:03,874 INFO L175 Difference]: Start difference. First operand has 118 places, 134 transitions, 1071 flow. Second operand 8 states and 213 transitions. [2024-06-27 19:10:03,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 188 transitions, 1656 flow [2024-06-27 19:10:03,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 188 transitions, 1553 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:10:03,928 INFO L231 Difference]: Finished difference. Result has 121 places, 140 transitions, 1119 flow [2024-06-27 19:10:03,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1119, PETRI_PLACES=121, PETRI_TRANSITIONS=140} [2024-06-27 19:10:03,928 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-27 19:10:03,929 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 140 transitions, 1119 flow [2024-06-27 19:10:03,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:03,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:03,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:03,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:10:03,929 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:03,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash -2054346918, now seen corresponding path program 3 times [2024-06-27 19:10:03,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:03,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487286352] [2024-06-27 19:10:03,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:03,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:04,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:04,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487286352] [2024-06-27 19:10:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487286352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:04,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:04,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595478423] [2024-06-27 19:10:04,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:04,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:04,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:04,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:04,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:05,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:05,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 140 transitions, 1119 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:05,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:05,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:05,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:05,964 INFO L124 PetriNetUnfolderBase]: 3571/6049 cut-off events. [2024-06-27 19:10:05,964 INFO L125 PetriNetUnfolderBase]: For 62900/62900 co-relation queries the response was YES. [2024-06-27 19:10:05,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27734 conditions, 6049 events. 3571/6049 cut-off events. For 62900/62900 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 40474 event pairs, 1181 based on Foata normal form. 4/5896 useless extension candidates. Maximal degree in co-relation 27683. Up to 5013 conditions per place. [2024-06-27 19:10:06,013 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 143 selfloop transitions, 37 changer transitions 0/192 dead transitions. [2024-06-27 19:10:06,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 192 transitions, 1704 flow [2024-06-27 19:10:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 19:10:06,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-27 19:10:06,015 INFO L175 Difference]: Start difference. First operand has 121 places, 140 transitions, 1119 flow. Second operand 8 states and 212 transitions. [2024-06-27 19:10:06,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 192 transitions, 1704 flow [2024-06-27 19:10:06,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 192 transitions, 1605 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:10:06,077 INFO L231 Difference]: Finished difference. Result has 124 places, 144 transitions, 1160 flow [2024-06-27 19:10:06,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1160, PETRI_PLACES=124, PETRI_TRANSITIONS=144} [2024-06-27 19:10:06,078 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-27 19:10:06,078 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 144 transitions, 1160 flow [2024-06-27 19:10:06,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:06,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:06,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:06,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:10:06,079 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:06,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2043871398, now seen corresponding path program 4 times [2024-06-27 19:10:06,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:06,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566413086] [2024-06-27 19:10:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:06,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:06,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:06,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566413086] [2024-06-27 19:10:06,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566413086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:06,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:06,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:06,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778583801] [2024-06-27 19:10:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:06,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:06,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:06,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:06,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 144 transitions, 1160 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:06,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:06,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:06,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:07,789 INFO L124 PetriNetUnfolderBase]: 3563/5987 cut-off events. [2024-06-27 19:10:07,789 INFO L125 PetriNetUnfolderBase]: For 65610/65610 co-relation queries the response was YES. [2024-06-27 19:10:07,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27806 conditions, 5987 events. 3563/5987 cut-off events. For 65610/65610 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39849 event pairs, 1047 based on Foata normal form. 4/5847 useless extension candidates. Maximal degree in co-relation 27754. Up to 4856 conditions per place. [2024-06-27 19:10:07,838 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 139 selfloop transitions, 44 changer transitions 0/195 dead transitions. [2024-06-27 19:10:07,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 195 transitions, 1738 flow [2024-06-27 19:10:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 19:10:07,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-27 19:10:07,840 INFO L175 Difference]: Start difference. First operand has 124 places, 144 transitions, 1160 flow. Second operand 8 states and 213 transitions. [2024-06-27 19:10:07,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 195 transitions, 1738 flow [2024-06-27 19:10:07,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 195 transitions, 1654 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:07,898 INFO L231 Difference]: Finished difference. Result has 128 places, 146 transitions, 1215 flow [2024-06-27 19:10:07,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1215, PETRI_PLACES=128, PETRI_TRANSITIONS=146} [2024-06-27 19:10:07,898 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-27 19:10:07,898 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 146 transitions, 1215 flow [2024-06-27 19:10:07,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:07,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:07,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:07,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:10:07,899 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:07,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:07,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1365420353, now seen corresponding path program 1 times [2024-06-27 19:10:07,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:07,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274871115] [2024-06-27 19:10:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:07,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:08,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:08,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274871115] [2024-06-27 19:10:08,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274871115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:08,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:08,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:08,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066108766] [2024-06-27 19:10:08,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:08,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:08,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:08,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:08,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:08,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:08,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 146 transitions, 1215 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:08,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:08,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:08,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:09,355 INFO L124 PetriNetUnfolderBase]: 3715/6288 cut-off events. [2024-06-27 19:10:09,355 INFO L125 PetriNetUnfolderBase]: For 72235/72235 co-relation queries the response was YES. [2024-06-27 19:10:09,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29437 conditions, 6288 events. 3715/6288 cut-off events. For 72235/72235 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 42437 event pairs, 1211 based on Foata normal form. 4/6127 useless extension candidates. Maximal degree in co-relation 29384. Up to 5179 conditions per place. [2024-06-27 19:10:09,407 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 151 selfloop transitions, 32 changer transitions 0/195 dead transitions. [2024-06-27 19:10:09,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 195 transitions, 1918 flow [2024-06-27 19:10:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 19:10:09,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 19:10:09,409 INFO L175 Difference]: Start difference. First operand has 128 places, 146 transitions, 1215 flow. Second operand 7 states and 182 transitions. [2024-06-27 19:10:09,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 195 transitions, 1918 flow [2024-06-27 19:10:09,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 195 transitions, 1783 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 19:10:09,487 INFO L231 Difference]: Finished difference. Result has 132 places, 164 transitions, 1388 flow [2024-06-27 19:10:09,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1388, PETRI_PLACES=132, PETRI_TRANSITIONS=164} [2024-06-27 19:10:09,487 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-27 19:10:09,487 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 164 transitions, 1388 flow [2024-06-27 19:10:09,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:09,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:09,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:09,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:10:09,488 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:09,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:09,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1572996353, now seen corresponding path program 2 times [2024-06-27 19:10:09,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:09,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342309554] [2024-06-27 19:10:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:09,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:10,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:10,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342309554] [2024-06-27 19:10:10,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342309554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:10,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:10,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621446813] [2024-06-27 19:10:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:10,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:10,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:10,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 164 transitions, 1388 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:10,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:10,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:10,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:10,975 INFO L124 PetriNetUnfolderBase]: 3862/6695 cut-off events. [2024-06-27 19:10:10,975 INFO L125 PetriNetUnfolderBase]: For 84752/84752 co-relation queries the response was YES. [2024-06-27 19:10:11,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32172 conditions, 6695 events. 3862/6695 cut-off events. For 84752/84752 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 46449 event pairs, 1230 based on Foata normal form. 4/6482 useless extension candidates. Maximal degree in co-relation 32115. Up to 5084 conditions per place. [2024-06-27 19:10:11,038 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 159 selfloop transitions, 44 changer transitions 0/215 dead transitions. [2024-06-27 19:10:11,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 215 transitions, 2232 flow [2024-06-27 19:10:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-27 19:10:11,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2024-06-27 19:10:11,039 INFO L175 Difference]: Start difference. First operand has 132 places, 164 transitions, 1388 flow. Second operand 7 states and 185 transitions. [2024-06-27 19:10:11,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 215 transitions, 2232 flow [2024-06-27 19:10:11,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 215 transitions, 2176 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-27 19:10:11,133 INFO L231 Difference]: Finished difference. Result has 140 places, 179 transitions, 1641 flow [2024-06-27 19:10:11,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1641, PETRI_PLACES=140, PETRI_TRANSITIONS=179} [2024-06-27 19:10:11,133 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-27 19:10:11,133 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 179 transitions, 1641 flow [2024-06-27 19:10:11,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:11,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:11,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:11,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:10:11,134 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:11,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1573293023, now seen corresponding path program 3 times [2024-06-27 19:10:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:11,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128513512] [2024-06-27 19:10:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:11,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:11,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:11,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128513512] [2024-06-27 19:10:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128513512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:11,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:11,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:11,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017043503] [2024-06-27 19:10:11,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:11,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:11,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:11,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 179 transitions, 1641 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:11,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:11,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:11,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:12,600 INFO L124 PetriNetUnfolderBase]: 3890/6729 cut-off events. [2024-06-27 19:10:12,600 INFO L125 PetriNetUnfolderBase]: For 93328/93328 co-relation queries the response was YES. [2024-06-27 19:10:12,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33908 conditions, 6729 events. 3890/6729 cut-off events. For 93328/93328 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 46598 event pairs, 1222 based on Foata normal form. 4/6516 useless extension candidates. Maximal degree in co-relation 33846. Up to 5111 conditions per place. [2024-06-27 19:10:12,663 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 153 selfloop transitions, 53 changer transitions 0/218 dead transitions. [2024-06-27 19:10:12,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 218 transitions, 2345 flow [2024-06-27 19:10:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 19:10:12,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-27 19:10:12,665 INFO L175 Difference]: Start difference. First operand has 140 places, 179 transitions, 1641 flow. Second operand 7 states and 184 transitions. [2024-06-27 19:10:12,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 218 transitions, 2345 flow [2024-06-27 19:10:12,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 218 transitions, 2235 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-27 19:10:12,772 INFO L231 Difference]: Finished difference. Result has 146 places, 187 transitions, 1789 flow [2024-06-27 19:10:12,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1789, PETRI_PLACES=146, PETRI_TRANSITIONS=187} [2024-06-27 19:10:12,772 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-27 19:10:12,772 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 187 transitions, 1789 flow [2024-06-27 19:10:12,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:12,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:12,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:12,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:10:12,773 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:12,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1571519997, now seen corresponding path program 1 times [2024-06-27 19:10:12,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:12,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283407425] [2024-06-27 19:10:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:12,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:13,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:13,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283407425] [2024-06-27 19:10:13,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283407425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:13,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:13,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:13,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235177912] [2024-06-27 19:10:13,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:13,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:13,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:13,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:13,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:10:13,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 187 transitions, 1789 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:13,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:13,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:10:13,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:14,550 INFO L124 PetriNetUnfolderBase]: 3743/6572 cut-off events. [2024-06-27 19:10:14,552 INFO L125 PetriNetUnfolderBase]: For 94896/94931 co-relation queries the response was YES. [2024-06-27 19:10:14,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32577 conditions, 6572 events. 3743/6572 cut-off events. For 94896/94931 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 46384 event pairs, 1215 based on Foata normal form. 12/6340 useless extension candidates. Maximal degree in co-relation 32512. Up to 4906 conditions per place. [2024-06-27 19:10:14,601 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 139 selfloop transitions, 64 changer transitions 0/236 dead transitions. [2024-06-27 19:10:14,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 236 transitions, 2543 flow [2024-06-27 19:10:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 19:10:14,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494791666666666 [2024-06-27 19:10:14,609 INFO L175 Difference]: Start difference. First operand has 146 places, 187 transitions, 1789 flow. Second operand 8 states and 211 transitions. [2024-06-27 19:10:14,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 236 transitions, 2543 flow [2024-06-27 19:10:14,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 236 transitions, 2446 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 19:10:14,697 INFO L231 Difference]: Finished difference. Result has 153 places, 203 transitions, 2118 flow [2024-06-27 19:10:14,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2118, PETRI_PLACES=153, PETRI_TRANSITIONS=203} [2024-06-27 19:10:14,698 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-27 19:10:14,698 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 203 transitions, 2118 flow [2024-06-27 19:10:14,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:14,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:14,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:14,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:10:14,699 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:14,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash 65019545, now seen corresponding path program 1 times [2024-06-27 19:10:14,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:14,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268991282] [2024-06-27 19:10:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:14,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268991282] [2024-06-27 19:10:15,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268991282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:15,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:15,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:15,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952360470] [2024-06-27 19:10:15,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:15,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:15,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:15,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:15,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:15,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 203 transitions, 2118 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:15,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:15,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:15,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:16,293 INFO L124 PetriNetUnfolderBase]: 4067/6753 cut-off events. [2024-06-27 19:10:16,294 INFO L125 PetriNetUnfolderBase]: For 102859/102859 co-relation queries the response was YES. [2024-06-27 19:10:16,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36196 conditions, 6753 events. 4067/6753 cut-off events. For 102859/102859 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 45551 event pairs, 1311 based on Foata normal form. 2/6607 useless extension candidates. Maximal degree in co-relation 36128. Up to 5801 conditions per place. [2024-06-27 19:10:16,352 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 200 selfloop transitions, 27 changer transitions 0/239 dead transitions. [2024-06-27 19:10:16,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 239 transitions, 2744 flow [2024-06-27 19:10:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 19:10:16,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 19:10:16,354 INFO L175 Difference]: Start difference. First operand has 153 places, 203 transitions, 2118 flow. Second operand 7 states and 182 transitions. [2024-06-27 19:10:16,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 239 transitions, 2744 flow [2024-06-27 19:10:16,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 239 transitions, 2556 flow, removed 83 selfloop flow, removed 2 redundant places. [2024-06-27 19:10:16,493 INFO L231 Difference]: Finished difference. Result has 158 places, 207 transitions, 2055 flow [2024-06-27 19:10:16,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2055, PETRI_PLACES=158, PETRI_TRANSITIONS=207} [2024-06-27 19:10:16,494 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-27 19:10:16,494 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 207 transitions, 2055 flow [2024-06-27 19:10:16,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:16,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:16,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:10:16,495 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:16,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1087891943, now seen corresponding path program 2 times [2024-06-27 19:10:16,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:16,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296597300] [2024-06-27 19:10:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:16,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:17,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:17,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296597300] [2024-06-27 19:10:17,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296597300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:17,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:17,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:17,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860231249] [2024-06-27 19:10:17,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:17,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:17,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:17,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:17,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:17,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 207 transitions, 2055 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:17,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:17,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:17,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:17,986 INFO L124 PetriNetUnfolderBase]: 4141/6886 cut-off events. [2024-06-27 19:10:17,987 INFO L125 PetriNetUnfolderBase]: For 103573/103573 co-relation queries the response was YES. [2024-06-27 19:10:18,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36057 conditions, 6886 events. 4141/6886 cut-off events. For 103573/103573 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 46738 event pairs, 1317 based on Foata normal form. 2/6738 useless extension candidates. Maximal degree in co-relation 35987. Up to 5832 conditions per place. [2024-06-27 19:10:18,053 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 199 selfloop transitions, 36 changer transitions 0/247 dead transitions. [2024-06-27 19:10:18,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 247 transitions, 2829 flow [2024-06-27 19:10:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 19:10:18,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 19:10:18,054 INFO L175 Difference]: Start difference. First operand has 158 places, 207 transitions, 2055 flow. Second operand 7 states and 183 transitions. [2024-06-27 19:10:18,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 247 transitions, 2829 flow [2024-06-27 19:10:18,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 247 transitions, 2772 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 19:10:18,177 INFO L231 Difference]: Finished difference. Result has 163 places, 214 transitions, 2225 flow [2024-06-27 19:10:18,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2225, PETRI_PLACES=163, PETRI_TRANSITIONS=214} [2024-06-27 19:10:18,178 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-27 19:10:18,178 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 214 transitions, 2225 flow [2024-06-27 19:10:18,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:18,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:18,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:18,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:10:18,179 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:18,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:18,179 INFO L85 PathProgramCache]: Analyzing trace with hash -924110873, now seen corresponding path program 3 times [2024-06-27 19:10:18,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:18,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670732333] [2024-06-27 19:10:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:18,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670732333] [2024-06-27 19:10:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670732333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:18,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:18,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890704698] [2024-06-27 19:10:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:18,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:18,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:18,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 214 transitions, 2225 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:18,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:18,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:18,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:19,659 INFO L124 PetriNetUnfolderBase]: 4135/6874 cut-off events. [2024-06-27 19:10:19,660 INFO L125 PetriNetUnfolderBase]: For 107556/107556 co-relation queries the response was YES. [2024-06-27 19:10:19,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36313 conditions, 6874 events. 4135/6874 cut-off events. For 107556/107556 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 46731 event pairs, 1339 based on Foata normal form. 2/6721 useless extension candidates. Maximal degree in co-relation 36241. Up to 5893 conditions per place. [2024-06-27 19:10:19,728 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 205 selfloop transitions, 27 changer transitions 0/244 dead transitions. [2024-06-27 19:10:19,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 244 transitions, 2796 flow [2024-06-27 19:10:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 19:10:19,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-27 19:10:19,730 INFO L175 Difference]: Start difference. First operand has 163 places, 214 transitions, 2225 flow. Second operand 7 states and 179 transitions. [2024-06-27 19:10:19,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 244 transitions, 2796 flow [2024-06-27 19:10:19,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 244 transitions, 2692 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:19,860 INFO L231 Difference]: Finished difference. Result has 166 places, 214 transitions, 2181 flow [2024-06-27 19:10:19,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2181, PETRI_PLACES=166, PETRI_TRANSITIONS=214} [2024-06-27 19:10:19,861 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-27 19:10:19,861 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 214 transitions, 2181 flow [2024-06-27 19:10:19,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:19,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:19,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:19,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:10:19,862 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:19,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1488913947, now seen corresponding path program 4 times [2024-06-27 19:10:19,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:19,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082809829] [2024-06-27 19:10:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:19,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:20,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:20,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082809829] [2024-06-27 19:10:20,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082809829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:20,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:20,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:20,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910824567] [2024-06-27 19:10:20,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:20,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:20,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:20,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:20,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 214 transitions, 2181 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:20,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:20,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:20,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:21,472 INFO L124 PetriNetUnfolderBase]: 4119/6844 cut-off events. [2024-06-27 19:10:21,473 INFO L125 PetriNetUnfolderBase]: For 109065/109065 co-relation queries the response was YES. [2024-06-27 19:10:21,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35846 conditions, 6844 events. 4119/6844 cut-off events. For 109065/109065 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 46397 event pairs, 1312 based on Foata normal form. 4/6697 useless extension candidates. Maximal degree in co-relation 35773. Up to 5695 conditions per place. [2024-06-27 19:10:21,537 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 195 selfloop transitions, 37 changer transitions 0/244 dead transitions. [2024-06-27 19:10:21,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 244 transitions, 2762 flow [2024-06-27 19:10:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 19:10:21,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2024-06-27 19:10:21,539 INFO L175 Difference]: Start difference. First operand has 166 places, 214 transitions, 2181 flow. Second operand 7 states and 181 transitions. [2024-06-27 19:10:21,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 244 transitions, 2762 flow [2024-06-27 19:10:21,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 244 transitions, 2682 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:21,684 INFO L231 Difference]: Finished difference. Result has 169 places, 214 transitions, 2183 flow [2024-06-27 19:10:21,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2183, PETRI_PLACES=169, PETRI_TRANSITIONS=214} [2024-06-27 19:10:21,685 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 19:10:21,685 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 214 transitions, 2183 flow [2024-06-27 19:10:21,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:21,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:21,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:21,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:10:21,685 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:21,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1518231463, now seen corresponding path program 5 times [2024-06-27 19:10:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578115592] [2024-06-27 19:10:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:22,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578115592] [2024-06-27 19:10:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578115592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:22,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:22,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:22,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890572818] [2024-06-27 19:10:22,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:22,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:22,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:22,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:22,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:22,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:22,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 214 transitions, 2183 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:22,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:22,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:22,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:23,307 INFO L124 PetriNetUnfolderBase]: 4187/7243 cut-off events. [2024-06-27 19:10:23,307 INFO L125 PetriNetUnfolderBase]: For 114971/114971 co-relation queries the response was YES. [2024-06-27 19:10:23,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36890 conditions, 7243 events. 4187/7243 cut-off events. For 114971/114971 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50956 event pairs, 1283 based on Foata normal form. 4/7021 useless extension candidates. Maximal degree in co-relation 36815. Up to 5409 conditions per place. [2024-06-27 19:10:23,373 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 177 selfloop transitions, 60 changer transitions 0/249 dead transitions. [2024-06-27 19:10:23,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 249 transitions, 2910 flow [2024-06-27 19:10:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 19:10:23,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-27 19:10:23,374 INFO L175 Difference]: Start difference. First operand has 169 places, 214 transitions, 2183 flow. Second operand 7 states and 184 transitions. [2024-06-27 19:10:23,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 249 transitions, 2910 flow [2024-06-27 19:10:23,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 249 transitions, 2810 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:10:23,505 INFO L231 Difference]: Finished difference. Result has 170 places, 218 transitions, 2272 flow [2024-06-27 19:10:23,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2272, PETRI_PLACES=170, PETRI_TRANSITIONS=218} [2024-06-27 19:10:23,506 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-27 19:10:23,506 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 218 transitions, 2272 flow [2024-06-27 19:10:23,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:23,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:23,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:23,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:10:23,507 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:23,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:23,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1517994313, now seen corresponding path program 6 times [2024-06-27 19:10:23,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:23,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151887382] [2024-06-27 19:10:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:23,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:24,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:24,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151887382] [2024-06-27 19:10:24,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151887382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:24,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:24,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:24,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925315766] [2024-06-27 19:10:24,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:24,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:24,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:24,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:24,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:24,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:24,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 218 transitions, 2272 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:24,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:24,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:24,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:25,127 INFO L124 PetriNetUnfolderBase]: 4171/7241 cut-off events. [2024-06-27 19:10:25,127 INFO L125 PetriNetUnfolderBase]: For 117025/117025 co-relation queries the response was YES. [2024-06-27 19:10:25,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37013 conditions, 7241 events. 4171/7241 cut-off events. For 117025/117025 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 51164 event pairs, 1280 based on Foata normal form. 4/7013 useless extension candidates. Maximal degree in co-relation 36937. Up to 5396 conditions per place. [2024-06-27 19:10:25,191 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 173 selfloop transitions, 63 changer transitions 0/248 dead transitions. [2024-06-27 19:10:25,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 248 transitions, 2871 flow [2024-06-27 19:10:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 19:10:25,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 19:10:25,193 INFO L175 Difference]: Start difference. First operand has 170 places, 218 transitions, 2272 flow. Second operand 7 states and 183 transitions. [2024-06-27 19:10:25,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 248 transitions, 2871 flow [2024-06-27 19:10:25,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 248 transitions, 2733 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:25,333 INFO L231 Difference]: Finished difference. Result has 173 places, 218 transitions, 2267 flow [2024-06-27 19:10:25,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2267, PETRI_PLACES=173, PETRI_TRANSITIONS=218} [2024-06-27 19:10:25,334 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-27 19:10:25,334 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 218 transitions, 2267 flow [2024-06-27 19:10:25,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:25,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:25,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:25,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:10:25,335 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:25,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:25,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1471927755, now seen corresponding path program 1 times [2024-06-27 19:10:25,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:25,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223572451] [2024-06-27 19:10:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:25,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:26,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:26,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223572451] [2024-06-27 19:10:26,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223572451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:26,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:26,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:26,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678014371] [2024-06-27 19:10:26,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:26,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:26,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:26,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:26,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:26,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:10:26,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 218 transitions, 2267 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:26,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:26,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:10:26,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:27,045 INFO L124 PetriNetUnfolderBase]: 3926/6915 cut-off events. [2024-06-27 19:10:27,045 INFO L125 PetriNetUnfolderBase]: For 116499/116534 co-relation queries the response was YES. [2024-06-27 19:10:27,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35129 conditions, 6915 events. 3926/6915 cut-off events. For 116499/116534 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 49498 event pairs, 1229 based on Foata normal form. 2/6674 useless extension candidates. Maximal degree in co-relation 35052. Up to 5310 conditions per place. [2024-06-27 19:10:27,111 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 155 selfloop transitions, 56 changer transitions 0/249 dead transitions. [2024-06-27 19:10:27,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 249 transitions, 2836 flow [2024-06-27 19:10:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 19:10:27,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 19:10:27,112 INFO L175 Difference]: Start difference. First operand has 173 places, 218 transitions, 2267 flow. Second operand 7 states and 183 transitions. [2024-06-27 19:10:27,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 249 transitions, 2836 flow [2024-06-27 19:10:27,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 249 transitions, 2620 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 19:10:27,230 INFO L231 Difference]: Finished difference. Result has 173 places, 224 transitions, 2251 flow [2024-06-27 19:10:27,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2251, PETRI_PLACES=173, PETRI_TRANSITIONS=224} [2024-06-27 19:10:27,231 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-27 19:10:27,231 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 224 transitions, 2251 flow [2024-06-27 19:10:27,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:27,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:27,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:27,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:10:27,232 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:27,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1472462505, now seen corresponding path program 2 times [2024-06-27 19:10:27,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:27,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902535417] [2024-06-27 19:10:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:27,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:27,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:27,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902535417] [2024-06-27 19:10:27,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902535417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:27,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349555179] [2024-06-27 19:10:27,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:27,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:27,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:27,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:27,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:10:27,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 224 transitions, 2251 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:27,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:27,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:10:27,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:28,866 INFO L124 PetriNetUnfolderBase]: 3919/6903 cut-off events. [2024-06-27 19:10:28,866 INFO L125 PetriNetUnfolderBase]: For 119073/119128 co-relation queries the response was YES. [2024-06-27 19:10:28,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35265 conditions, 6903 events. 3919/6903 cut-off events. For 119073/119128 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 49444 event pairs, 1230 based on Foata normal form. 2/6661 useless extension candidates. Maximal degree in co-relation 35187. Up to 5247 conditions per place. [2024-06-27 19:10:28,931 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 154 selfloop transitions, 60 changer transitions 0/252 dead transitions. [2024-06-27 19:10:28,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 252 transitions, 2807 flow [2024-06-27 19:10:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 19:10:28,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 19:10:28,932 INFO L175 Difference]: Start difference. First operand has 173 places, 224 transitions, 2251 flow. Second operand 7 states and 183 transitions. [2024-06-27 19:10:28,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 252 transitions, 2807 flow [2024-06-27 19:10:29,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 252 transitions, 2718 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 19:10:29,041 INFO L231 Difference]: Finished difference. Result has 177 places, 227 transitions, 2333 flow [2024-06-27 19:10:29,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2333, PETRI_PLACES=177, PETRI_TRANSITIONS=227} [2024-06-27 19:10:29,042 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-27 19:10:29,042 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 227 transitions, 2333 flow [2024-06-27 19:10:29,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:29,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:29,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:10:29,043 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:29,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:29,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1493696379, now seen corresponding path program 1 times [2024-06-27 19:10:29,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:29,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333335377] [2024-06-27 19:10:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:29,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:29,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333335377] [2024-06-27 19:10:29,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333335377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:29,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:29,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:29,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958596722] [2024-06-27 19:10:29,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:29,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:29,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:29,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:29,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 227 transitions, 2333 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:29,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:29,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:29,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:30,905 INFO L124 PetriNetUnfolderBase]: 4211/6962 cut-off events. [2024-06-27 19:10:30,905 INFO L125 PetriNetUnfolderBase]: For 124030/124032 co-relation queries the response was YES. [2024-06-27 19:10:30,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37645 conditions, 6962 events. 4211/6962 cut-off events. For 124030/124032 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 47253 event pairs, 1349 based on Foata normal form. 1/6822 useless extension candidates. Maximal degree in co-relation 37566. Up to 6041 conditions per place. [2024-06-27 19:10:30,973 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 228 selfloop transitions, 20 changer transitions 0/260 dead transitions. [2024-06-27 19:10:30,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 260 transitions, 2985 flow [2024-06-27 19:10:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 19:10:30,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-27 19:10:30,975 INFO L175 Difference]: Start difference. First operand has 177 places, 227 transitions, 2333 flow. Second operand 7 states and 179 transitions. [2024-06-27 19:10:30,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 260 transitions, 2985 flow [2024-06-27 19:10:31,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 260 transitions, 2838 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:10:31,115 INFO L231 Difference]: Finished difference. Result has 179 places, 230 transitions, 2294 flow [2024-06-27 19:10:31,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2186, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2294, PETRI_PLACES=179, PETRI_TRANSITIONS=230} [2024-06-27 19:10:31,116 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-27 19:10:31,116 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 230 transitions, 2294 flow [2024-06-27 19:10:31,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 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) [2024-06-27 19:10:31,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:31,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:31,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:10:31,116 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:31,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:31,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1488897083, now seen corresponding path program 1 times [2024-06-27 19:10:31,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:31,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378343296] [2024-06-27 19:10:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:31,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:31,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378343296] [2024-06-27 19:10:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378343296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:31,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426818982] [2024-06-27 19:10:31,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:31,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:31,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:31,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:31,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:31,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 230 transitions, 2294 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:31,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:31,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:31,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:32,991 INFO L124 PetriNetUnfolderBase]: 4270/7052 cut-off events. [2024-06-27 19:10:32,992 INFO L125 PetriNetUnfolderBase]: For 131894/131894 co-relation queries the response was YES. [2024-06-27 19:10:33,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38386 conditions, 7052 events. 4270/7052 cut-off events. For 131894/131894 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 47789 event pairs, 1298 based on Foata normal form. 2/6912 useless extension candidates. Maximal degree in co-relation 38306. Up to 5950 conditions per place. [2024-06-27 19:10:33,057 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 225 selfloop transitions, 53 changer transitions 0/290 dead transitions. [2024-06-27 19:10:33,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 290 transitions, 3281 flow [2024-06-27 19:10:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 19:10:33,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 19:10:33,059 INFO L175 Difference]: Start difference. First operand has 179 places, 230 transitions, 2294 flow. Second operand 8 states and 205 transitions. [2024-06-27 19:10:33,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 290 transitions, 3281 flow [2024-06-27 19:10:33,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 290 transitions, 3195 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 19:10:33,229 INFO L231 Difference]: Finished difference. Result has 184 places, 253 transitions, 2661 flow [2024-06-27 19:10:33,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2208, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2661, PETRI_PLACES=184, PETRI_TRANSITIONS=253} [2024-06-27 19:10:33,229 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-27 19:10:33,229 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 253 transitions, 2661 flow [2024-06-27 19:10:33,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:33,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:33,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:33,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:10:33,230 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:33,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1518248327, now seen corresponding path program 2 times [2024-06-27 19:10:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:33,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897124215] [2024-06-27 19:10:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:33,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:33,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:33,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897124215] [2024-06-27 19:10:33,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897124215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:33,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:33,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:33,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618473895] [2024-06-27 19:10:33,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:33,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:33,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:33,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:33,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:34,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:34,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 253 transitions, 2661 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:34,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:34,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:34,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:35,255 INFO L124 PetriNetUnfolderBase]: 4314/7396 cut-off events. [2024-06-27 19:10:35,255 INFO L125 PetriNetUnfolderBase]: For 146079/146079 co-relation queries the response was YES. [2024-06-27 19:10:35,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40764 conditions, 7396 events. 4314/7396 cut-off events. For 146079/146079 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 51578 event pairs, 1214 based on Foata normal form. 2/7196 useless extension candidates. Maximal degree in co-relation 40681. Up to 5745 conditions per place. [2024-06-27 19:10:35,326 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 234 selfloop transitions, 79 changer transitions 0/325 dead transitions. [2024-06-27 19:10:35,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 325 transitions, 3880 flow [2024-06-27 19:10:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 19:10:35,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 19:10:35,328 INFO L175 Difference]: Start difference. First operand has 184 places, 253 transitions, 2661 flow. Second operand 8 states and 205 transitions. [2024-06-27 19:10:35,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 325 transitions, 3880 flow [2024-06-27 19:10:35,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 325 transitions, 3697 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-27 19:10:35,521 INFO L231 Difference]: Finished difference. Result has 190 places, 285 transitions, 3133 flow [2024-06-27 19:10:35,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3133, PETRI_PLACES=190, PETRI_TRANSITIONS=285} [2024-06-27 19:10:35,523 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-06-27 19:10:35,523 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 285 transitions, 3133 flow [2024-06-27 19:10:35,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:35,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:35,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:35,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:10:35,523 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:35,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1472469449, now seen corresponding path program 3 times [2024-06-27 19:10:35,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:35,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512038610] [2024-06-27 19:10:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:36,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:36,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512038610] [2024-06-27 19:10:36,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512038610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:36,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:36,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:36,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667305293] [2024-06-27 19:10:36,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:36,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:36,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:36,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:36,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:36,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:36,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 285 transitions, 3133 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:36,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:36,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:36,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:37,587 INFO L124 PetriNetUnfolderBase]: 4373/7490 cut-off events. [2024-06-27 19:10:37,588 INFO L125 PetriNetUnfolderBase]: For 155216/155216 co-relation queries the response was YES. [2024-06-27 19:10:37,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42631 conditions, 7490 events. 4373/7490 cut-off events. For 155216/155216 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 52188 event pairs, 1218 based on Foata normal form. 2/7284 useless extension candidates. Maximal degree in co-relation 42545. Up to 5716 conditions per place. [2024-06-27 19:10:37,657 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 220 selfloop transitions, 110 changer transitions 0/342 dead transitions. [2024-06-27 19:10:37,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 342 transitions, 4355 flow [2024-06-27 19:10:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 19:10:37,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-27 19:10:37,658 INFO L175 Difference]: Start difference. First operand has 190 places, 285 transitions, 3133 flow. Second operand 8 states and 207 transitions. [2024-06-27 19:10:37,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 342 transitions, 4355 flow [2024-06-27 19:10:37,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 342 transitions, 4161 flow, removed 84 selfloop flow, removed 2 redundant places. [2024-06-27 19:10:37,904 INFO L231 Difference]: Finished difference. Result has 199 places, 306 transitions, 3656 flow [2024-06-27 19:10:37,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2967, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3656, PETRI_PLACES=199, PETRI_TRANSITIONS=306} [2024-06-27 19:10:37,905 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-27 19:10:37,905 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 306 transitions, 3656 flow [2024-06-27 19:10:37,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:37,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:37,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:37,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:10:37,906 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:37,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:37,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1527445097, now seen corresponding path program 4 times [2024-06-27 19:10:37,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:37,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928608885] [2024-06-27 19:10:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:37,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:38,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:38,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928608885] [2024-06-27 19:10:38,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928608885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:38,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:38,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288396202] [2024-06-27 19:10:38,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:38,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:38,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:38,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:38,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:38,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:38,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 306 transitions, 3656 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:38,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:38,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:38,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:39,980 INFO L124 PetriNetUnfolderBase]: 4367/7512 cut-off events. [2024-06-27 19:10:39,981 INFO L125 PetriNetUnfolderBase]: For 161915/161915 co-relation queries the response was YES. [2024-06-27 19:10:40,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44248 conditions, 7512 events. 4367/7512 cut-off events. For 161915/161915 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 52525 event pairs, 1218 based on Foata normal form. 2/7306 useless extension candidates. Maximal degree in co-relation 44157. Up to 5816 conditions per place. [2024-06-27 19:10:40,060 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 236 selfloop transitions, 94 changer transitions 0/342 dead transitions. [2024-06-27 19:10:40,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 342 transitions, 4476 flow [2024-06-27 19:10:40,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 19:10:40,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 19:10:40,062 INFO L175 Difference]: Start difference. First operand has 199 places, 306 transitions, 3656 flow. Second operand 8 states and 205 transitions. [2024-06-27 19:10:40,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 342 transitions, 4476 flow [2024-06-27 19:10:40,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 342 transitions, 4276 flow, removed 87 selfloop flow, removed 2 redundant places. [2024-06-27 19:10:40,408 INFO L231 Difference]: Finished difference. Result has 205 places, 307 transitions, 3675 flow [2024-06-27 19:10:40,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3675, PETRI_PLACES=205, PETRI_TRANSITIONS=307} [2024-06-27 19:10:40,409 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-27 19:10:40,409 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 307 transitions, 3675 flow [2024-06-27 19:10:40,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:40,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:40,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:40,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:10:40,411 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:40,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:40,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1765043877, now seen corresponding path program 1 times [2024-06-27 19:10:40,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:40,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792784291] [2024-06-27 19:10:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:40,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:41,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792784291] [2024-06-27 19:10:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792784291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:41,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:41,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:10:41,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405623450] [2024-06-27 19:10:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:41,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:10:41,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:41,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:10:41,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:10:41,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:41,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 307 transitions, 3675 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:41,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:41,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:41,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:43,102 INFO L124 PetriNetUnfolderBase]: 4646/7699 cut-off events. [2024-06-27 19:10:43,102 INFO L125 PetriNetUnfolderBase]: For 175369/175371 co-relation queries the response was YES. [2024-06-27 19:10:43,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46679 conditions, 7699 events. 4646/7699 cut-off events. For 175369/175371 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 53079 event pairs, 1227 based on Foata normal form. 12/7562 useless extension candidates. Maximal degree in co-relation 46586. Up to 5901 conditions per place. [2024-06-27 19:10:43,189 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 305 selfloop transitions, 59 changer transitions 0/376 dead transitions. [2024-06-27 19:10:43,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 376 transitions, 4763 flow [2024-06-27 19:10:43,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:10:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:10:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-27 19:10:43,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-27 19:10:43,191 INFO L175 Difference]: Start difference. First operand has 205 places, 307 transitions, 3675 flow. Second operand 9 states and 249 transitions. [2024-06-27 19:10:43,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 376 transitions, 4763 flow [2024-06-27 19:10:43,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 376 transitions, 4547 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 19:10:43,481 INFO L231 Difference]: Finished difference. Result has 211 places, 315 transitions, 3711 flow [2024-06-27 19:10:43,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3711, PETRI_PLACES=211, PETRI_TRANSITIONS=315} [2024-06-27 19:10:43,482 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 157 predicate places. [2024-06-27 19:10:43,482 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 315 transitions, 3711 flow [2024-06-27 19:10:43,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:43,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:43,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:43,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:10:43,483 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:43,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1332576549, now seen corresponding path program 2 times [2024-06-27 19:10:43,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:43,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167710856] [2024-06-27 19:10:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:43,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:44,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:44,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167710856] [2024-06-27 19:10:44,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167710856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:44,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:44,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:10:44,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729009366] [2024-06-27 19:10:44,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:44,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:10:44,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:10:44,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:10:44,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:44,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 315 transitions, 3711 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:44,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:44,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:44,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:45,755 INFO L124 PetriNetUnfolderBase]: 4892/8165 cut-off events. [2024-06-27 19:10:45,755 INFO L125 PetriNetUnfolderBase]: For 188797/188797 co-relation queries the response was YES. [2024-06-27 19:10:45,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49490 conditions, 8165 events. 4892/8165 cut-off events. For 188797/188797 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 57251 event pairs, 1335 based on Foata normal form. 12/8009 useless extension candidates. Maximal degree in co-relation 49394. Up to 6446 conditions per place. [2024-06-27 19:10:45,846 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 305 selfloop transitions, 61 changer transitions 0/378 dead transitions. [2024-06-27 19:10:45,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 378 transitions, 4766 flow [2024-06-27 19:10:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:10:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:10:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-27 19:10:45,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2024-06-27 19:10:45,848 INFO L175 Difference]: Start difference. First operand has 211 places, 315 transitions, 3711 flow. Second operand 9 states and 247 transitions. [2024-06-27 19:10:45,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 378 transitions, 4766 flow [2024-06-27 19:10:46,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 378 transitions, 4653 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:46,160 INFO L231 Difference]: Finished difference. Result has 218 places, 321 transitions, 3836 flow [2024-06-27 19:10:46,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3604, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3836, PETRI_PLACES=218, PETRI_TRANSITIONS=321} [2024-06-27 19:10:46,161 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-27 19:10:46,161 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 321 transitions, 3836 flow [2024-06-27 19:10:46,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:46,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:46,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:46,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:10:46,162 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:46,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:46,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1702604837, now seen corresponding path program 3 times [2024-06-27 19:10:46,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:46,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623077765] [2024-06-27 19:10:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:46,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:46,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:46,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623077765] [2024-06-27 19:10:46,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623077765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:46,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:46,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:10:46,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19119840] [2024-06-27 19:10:46,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:46,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:10:46,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:10:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:10:47,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:47,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 321 transitions, 3836 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:47,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:47,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:47,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:48,596 INFO L124 PetriNetUnfolderBase]: 5078/8498 cut-off events. [2024-06-27 19:10:48,596 INFO L125 PetriNetUnfolderBase]: For 200846/200846 co-relation queries the response was YES. [2024-06-27 19:10:48,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51588 conditions, 8498 events. 5078/8498 cut-off events. For 200846/200846 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 60097 event pairs, 1398 based on Foata normal form. 12/8334 useless extension candidates. Maximal degree in co-relation 51489. Up to 6740 conditions per place. [2024-06-27 19:10:48,694 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 304 selfloop transitions, 66 changer transitions 0/382 dead transitions. [2024-06-27 19:10:48,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 382 transitions, 4884 flow [2024-06-27 19:10:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:10:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:10:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-27 19:10:48,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 19:10:48,696 INFO L175 Difference]: Start difference. First operand has 218 places, 321 transitions, 3836 flow. Second operand 9 states and 246 transitions. [2024-06-27 19:10:48,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 382 transitions, 4884 flow [2024-06-27 19:10:49,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 382 transitions, 4759 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:49,057 INFO L231 Difference]: Finished difference. Result has 224 places, 325 transitions, 3929 flow [2024-06-27 19:10:49,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3713, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3929, PETRI_PLACES=224, PETRI_TRANSITIONS=325} [2024-06-27 19:10:49,057 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-27 19:10:49,057 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 325 transitions, 3929 flow [2024-06-27 19:10:49,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:49,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:49,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:49,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:10:49,058 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:49,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1360306247, now seen corresponding path program 4 times [2024-06-27 19:10:49,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:49,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917028104] [2024-06-27 19:10:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:49,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:49,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:49,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917028104] [2024-06-27 19:10:49,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917028104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:49,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:49,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:10:49,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697169479] [2024-06-27 19:10:49,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:49,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:10:49,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:49,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:10:49,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:10:49,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:10:49,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 325 transitions, 3929 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:49,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:49,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:10:49,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:51,559 INFO L124 PetriNetUnfolderBase]: 5058/8332 cut-off events. [2024-06-27 19:10:51,559 INFO L125 PetriNetUnfolderBase]: For 196158/196158 co-relation queries the response was YES. [2024-06-27 19:10:51,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50603 conditions, 8332 events. 5058/8332 cut-off events. For 196158/196158 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 57882 event pairs, 1180 based on Foata normal form. 12/8208 useless extension candidates. Maximal degree in co-relation 50502. Up to 5660 conditions per place. [2024-06-27 19:10:51,648 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 294 selfloop transitions, 76 changer transitions 0/382 dead transitions. [2024-06-27 19:10:51,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 382 transitions, 4865 flow [2024-06-27 19:10:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:10:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:10:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-27 19:10:51,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671296296296297 [2024-06-27 19:10:51,650 INFO L175 Difference]: Start difference. First operand has 224 places, 325 transitions, 3929 flow. Second operand 9 states and 245 transitions. [2024-06-27 19:10:51,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 382 transitions, 4865 flow [2024-06-27 19:10:51,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 382 transitions, 4745 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:51,949 INFO L231 Difference]: Finished difference. Result has 228 places, 324 transitions, 3921 flow [2024-06-27 19:10:51,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3765, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3921, PETRI_PLACES=228, PETRI_TRANSITIONS=324} [2024-06-27 19:10:51,949 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-27 19:10:51,949 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 324 transitions, 3921 flow [2024-06-27 19:10:51,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:51,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:51,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:51,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:10:51,950 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:51,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash 99486238, now seen corresponding path program 1 times [2024-06-27 19:10:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:51,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627075545] [2024-06-27 19:10:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:51,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:52,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:52,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627075545] [2024-06-27 19:10:52,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627075545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:52,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:52,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310319402] [2024-06-27 19:10:52,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:52,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:52,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:52,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:10:52,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 324 transitions, 3921 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:52,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:52,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:10:52,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:54,183 INFO L124 PetriNetUnfolderBase]: 4875/8591 cut-off events. [2024-06-27 19:10:54,184 INFO L125 PetriNetUnfolderBase]: For 200323/200332 co-relation queries the response was YES. [2024-06-27 19:10:54,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49681 conditions, 8591 events. 4875/8591 cut-off events. For 200323/200332 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 63645 event pairs, 1330 based on Foata normal form. 10/8310 useless extension candidates. Maximal degree in co-relation 49579. Up to 6490 conditions per place. [2024-06-27 19:10:54,290 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 237 selfloop transitions, 63 changer transitions 0/359 dead transitions. [2024-06-27 19:10:54,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 359 transitions, 4685 flow [2024-06-27 19:10:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 19:10:54,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 19:10:54,309 INFO L175 Difference]: Start difference. First operand has 228 places, 324 transitions, 3921 flow. Second operand 8 states and 208 transitions. [2024-06-27 19:10:54,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 359 transitions, 4685 flow [2024-06-27 19:10:54,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 359 transitions, 4485 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 19:10:54,782 INFO L231 Difference]: Finished difference. Result has 228 places, 325 transitions, 3872 flow [2024-06-27 19:10:54,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3721, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3872, PETRI_PLACES=228, PETRI_TRANSITIONS=325} [2024-06-27 19:10:54,782 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-27 19:10:54,783 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 325 transitions, 3872 flow [2024-06-27 19:10:54,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:54,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:54,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:54,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:10:54,783 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:54,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:54,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1597736420, now seen corresponding path program 2 times [2024-06-27 19:10:54,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:54,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471244216] [2024-06-27 19:10:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:54,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:55,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:55,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471244216] [2024-06-27 19:10:55,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471244216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:55,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:55,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:55,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234278260] [2024-06-27 19:10:55,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:55,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:55,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:55,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:10:55,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 325 transitions, 3872 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:55,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:55,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:10:55,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:56,999 INFO L124 PetriNetUnfolderBase]: 5031/8801 cut-off events. [2024-06-27 19:10:56,999 INFO L125 PetriNetUnfolderBase]: For 206480/206526 co-relation queries the response was YES. [2024-06-27 19:10:57,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50390 conditions, 8801 events. 5031/8801 cut-off events. For 206480/206526 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 64966 event pairs, 1347 based on Foata normal form. 33/8518 useless extension candidates. Maximal degree in co-relation 50288. Up to 6288 conditions per place. [2024-06-27 19:10:57,108 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 234 selfloop transitions, 72 changer transitions 0/365 dead transitions. [2024-06-27 19:10:57,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 365 transitions, 4786 flow [2024-06-27 19:10:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:10:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:10:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 19:10:57,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494791666666666 [2024-06-27 19:10:57,109 INFO L175 Difference]: Start difference. First operand has 228 places, 325 transitions, 3872 flow. Second operand 8 states and 211 transitions. [2024-06-27 19:10:57,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 365 transitions, 4786 flow [2024-06-27 19:10:57,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 365 transitions, 4657 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:10:57,495 INFO L231 Difference]: Finished difference. Result has 230 places, 327 transitions, 3933 flow [2024-06-27 19:10:57,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3743, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3933, PETRI_PLACES=230, PETRI_TRANSITIONS=327} [2024-06-27 19:10:57,496 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 176 predicate places. [2024-06-27 19:10:57,496 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 327 transitions, 3933 flow [2024-06-27 19:10:57,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:57,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:57,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:57,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:10:57,497 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:10:57,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1598300930, now seen corresponding path program 3 times [2024-06-27 19:10:57,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:57,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853196031] [2024-06-27 19:10:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:57,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:58,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:58,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853196031] [2024-06-27 19:10:58,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853196031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:58,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:58,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:10:58,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727285269] [2024-06-27 19:10:58,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:58,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:10:58,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:10:58,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:10:58,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 19:10:58,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 327 transitions, 3933 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:10:58,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:58,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 19:10:58,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:00,017 INFO L124 PetriNetUnfolderBase]: 5009/8750 cut-off events. [2024-06-27 19:11:00,017 INFO L125 PetriNetUnfolderBase]: For 204232/204278 co-relation queries the response was YES. [2024-06-27 19:11:00,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49917 conditions, 8750 events. 5009/8750 cut-off events. For 204232/204278 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 64481 event pairs, 1354 based on Foata normal form. 34/8463 useless extension candidates. Maximal degree in co-relation 49814. Up to 6661 conditions per place. [2024-06-27 19:11:00,130 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 232 selfloop transitions, 70 changer transitions 0/361 dead transitions. [2024-06-27 19:11:00,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 361 transitions, 4683 flow [2024-06-27 19:11:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 19:11:00,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 19:11:00,131 INFO L175 Difference]: Start difference. First operand has 230 places, 327 transitions, 3933 flow. Second operand 8 states and 208 transitions. [2024-06-27 19:11:00,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 361 transitions, 4683 flow [2024-06-27 19:11:00,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 361 transitions, 4585 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 19:11:00,507 INFO L231 Difference]: Finished difference. Result has 234 places, 327 transitions, 3980 flow [2024-06-27 19:11:00,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3980, PETRI_PLACES=234, PETRI_TRANSITIONS=327} [2024-06-27 19:11:00,508 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-06-27 19:11:00,508 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 327 transitions, 3980 flow [2024-06-27 19:11:00,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:00,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:00,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:00,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:11:00,509 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:00,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:00,509 INFO L85 PathProgramCache]: Analyzing trace with hash 452803166, now seen corresponding path program 1 times [2024-06-27 19:11:00,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:00,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333996423] [2024-06-27 19:11:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:01,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:01,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333996423] [2024-06-27 19:11:01,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333996423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:01,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:01,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:01,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833667744] [2024-06-27 19:11:01,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:01,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:01,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:01,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:01,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:01,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 327 transitions, 3980 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:01,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:01,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:01,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:02,961 INFO L124 PetriNetUnfolderBase]: 5384/9066 cut-off events. [2024-06-27 19:11:02,962 INFO L125 PetriNetUnfolderBase]: For 203213/203213 co-relation queries the response was YES. [2024-06-27 19:11:03,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53287 conditions, 9066 events. 5384/9066 cut-off events. For 203213/203213 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 65160 event pairs, 1574 based on Foata normal form. 2/8870 useless extension candidates. Maximal degree in co-relation 53182. Up to 7673 conditions per place. [2024-06-27 19:11:03,061 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 329 selfloop transitions, 45 changer transitions 0/386 dead transitions. [2024-06-27 19:11:03,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 386 transitions, 5235 flow [2024-06-27 19:11:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:03,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 19:11:03,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 19:11:03,063 INFO L175 Difference]: Start difference. First operand has 234 places, 327 transitions, 3980 flow. Second operand 8 states and 205 transitions. [2024-06-27 19:11:03,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 386 transitions, 5235 flow [2024-06-27 19:11:03,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 386 transitions, 5082 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:11:03,403 INFO L231 Difference]: Finished difference. Result has 237 places, 349 transitions, 4262 flow [2024-06-27 19:11:03,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4262, PETRI_PLACES=237, PETRI_TRANSITIONS=349} [2024-06-27 19:11:03,408 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 183 predicate places. [2024-06-27 19:11:03,408 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 349 transitions, 4262 flow [2024-06-27 19:11:03,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:03,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:03,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:03,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:11:03,409 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:03,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1088832354, now seen corresponding path program 1 times [2024-06-27 19:11:03,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:03,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029410021] [2024-06-27 19:11:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:04,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:04,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029410021] [2024-06-27 19:11:04,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029410021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:04,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:04,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:11:04,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185694113] [2024-06-27 19:11:04,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:04,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:11:04,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:04,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:11:04,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:11:04,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:04,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 349 transitions, 4262 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:04,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:04,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:04,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:05,937 INFO L124 PetriNetUnfolderBase]: 5740/9553 cut-off events. [2024-06-27 19:11:05,937 INFO L125 PetriNetUnfolderBase]: For 263288/263288 co-relation queries the response was YES. [2024-06-27 19:11:06,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58739 conditions, 9553 events. 5740/9553 cut-off events. For 263288/263288 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 68240 event pairs, 1592 based on Foata normal form. 26/9389 useless extension candidates. Maximal degree in co-relation 58631. Up to 7733 conditions per place. [2024-06-27 19:11:06,059 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 332 selfloop transitions, 61 changer transitions 0/405 dead transitions. [2024-06-27 19:11:06,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 405 transitions, 5475 flow [2024-06-27 19:11:06,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:11:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:11:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 19:11:06,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 19:11:06,061 INFO L175 Difference]: Start difference. First operand has 237 places, 349 transitions, 4262 flow. Second operand 9 states and 234 transitions. [2024-06-27 19:11:06,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 405 transitions, 5475 flow [2024-06-27 19:11:06,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 405 transitions, 5317 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-27 19:11:06,471 INFO L231 Difference]: Finished difference. Result has 243 places, 360 transitions, 4469 flow [2024-06-27 19:11:06,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4469, PETRI_PLACES=243, PETRI_TRANSITIONS=360} [2024-06-27 19:11:06,471 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-06-27 19:11:06,471 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 360 transitions, 4469 flow [2024-06-27 19:11:06,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:06,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:06,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:06,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:11:06,472 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:06,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:06,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1893304866, now seen corresponding path program 2 times [2024-06-27 19:11:06,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:06,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030503307] [2024-06-27 19:11:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:06,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:07,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:07,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030503307] [2024-06-27 19:11:07,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030503307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:07,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:07,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:11:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259171568] [2024-06-27 19:11:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:07,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:11:07,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:11:07,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:11:07,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:07,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 360 transitions, 4469 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:07,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:07,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:07,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:09,064 INFO L124 PetriNetUnfolderBase]: 5796/9696 cut-off events. [2024-06-27 19:11:09,064 INFO L125 PetriNetUnfolderBase]: For 261015/261015 co-relation queries the response was YES. [2024-06-27 19:11:09,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60992 conditions, 9696 events. 5796/9696 cut-off events. For 261015/261015 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 69538 event pairs, 1432 based on Foata normal form. 4/9506 useless extension candidates. Maximal degree in co-relation 60882. Up to 7932 conditions per place. [2024-06-27 19:11:09,201 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 307 selfloop transitions, 86 changer transitions 0/405 dead transitions. [2024-06-27 19:11:09,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 405 transitions, 5518 flow [2024-06-27 19:11:09,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:11:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:11:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 19:11:09,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 19:11:09,205 INFO L175 Difference]: Start difference. First operand has 243 places, 360 transitions, 4469 flow. Second operand 9 states and 228 transitions. [2024-06-27 19:11:09,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 405 transitions, 5518 flow [2024-06-27 19:11:09,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 405 transitions, 5341 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 19:11:09,752 INFO L231 Difference]: Finished difference. Result has 247 places, 363 transitions, 4556 flow [2024-06-27 19:11:09,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4292, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4556, PETRI_PLACES=247, PETRI_TRANSITIONS=363} [2024-06-27 19:11:09,760 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 193 predicate places. [2024-06-27 19:11:09,760 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 363 transitions, 4556 flow [2024-06-27 19:11:09,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:09,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:09,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:09,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:11:09,761 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:09,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1608204996, now seen corresponding path program 3 times [2024-06-27 19:11:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:09,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568183811] [2024-06-27 19:11:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:09,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568183811] [2024-06-27 19:11:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568183811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:10,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:10,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:11:10,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790662647] [2024-06-27 19:11:10,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:11:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:11:10,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:11:10,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:10,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 363 transitions, 4556 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:10,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:10,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:10,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:12,503 INFO L124 PetriNetUnfolderBase]: 5852/9776 cut-off events. [2024-06-27 19:11:12,503 INFO L125 PetriNetUnfolderBase]: For 260891/260891 co-relation queries the response was YES. [2024-06-27 19:11:12,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61540 conditions, 9776 events. 5852/9776 cut-off events. For 260891/260891 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 70139 event pairs, 1456 based on Foata normal form. 4/9584 useless extension candidates. Maximal degree in co-relation 61428. Up to 8012 conditions per place. [2024-06-27 19:11:12,637 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 298 selfloop transitions, 97 changer transitions 0/407 dead transitions. [2024-06-27 19:11:12,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 407 transitions, 5603 flow [2024-06-27 19:11:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:11:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:11:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 19:11:12,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 19:11:12,639 INFO L175 Difference]: Start difference. First operand has 247 places, 363 transitions, 4556 flow. Second operand 9 states and 228 transitions. [2024-06-27 19:11:12,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 407 transitions, 5603 flow [2024-06-27 19:11:13,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 407 transitions, 5361 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 19:11:13,168 INFO L231 Difference]: Finished difference. Result has 249 places, 366 transitions, 4606 flow [2024-06-27 19:11:13,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4606, PETRI_PLACES=249, PETRI_TRANSITIONS=366} [2024-06-27 19:11:13,169 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-27 19:11:13,169 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 366 transitions, 4606 flow [2024-06-27 19:11:13,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:13,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:13,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:13,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:11:13,170 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:13,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:13,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1597729476, now seen corresponding path program 4 times [2024-06-27 19:11:13,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:13,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479042692] [2024-06-27 19:11:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:13,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:13,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479042692] [2024-06-27 19:11:13,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479042692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:13,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:13,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:11:13,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235735829] [2024-06-27 19:11:13,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:13,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:11:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:11:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:11:14,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:14,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 366 transitions, 4606 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:14,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:14,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:14,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:16,056 INFO L124 PetriNetUnfolderBase]: 6369/10852 cut-off events. [2024-06-27 19:11:16,056 INFO L125 PetriNetUnfolderBase]: For 337979/337979 co-relation queries the response was YES. [2024-06-27 19:11:16,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70095 conditions, 10852 events. 6369/10852 cut-off events. For 337979/337979 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 80498 event pairs, 1577 based on Foata normal form. 4/10572 useless extension candidates. Maximal degree in co-relation 69982. Up to 7557 conditions per place. [2024-06-27 19:11:16,192 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 298 selfloop transitions, 137 changer transitions 0/447 dead transitions. [2024-06-27 19:11:16,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 447 transitions, 6487 flow [2024-06-27 19:11:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:11:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:11:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 19:11:16,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-27 19:11:16,194 INFO L175 Difference]: Start difference. First operand has 249 places, 366 transitions, 4606 flow. Second operand 9 states and 238 transitions. [2024-06-27 19:11:16,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 447 transitions, 6487 flow [2024-06-27 19:11:16,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 447 transitions, 6117 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-27 19:11:16,784 INFO L231 Difference]: Finished difference. Result has 253 places, 397 transitions, 5162 flow [2024-06-27 19:11:16,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4336, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5162, PETRI_PLACES=253, PETRI_TRANSITIONS=397} [2024-06-27 19:11:16,784 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 199 predicate places. [2024-06-27 19:11:16,785 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 397 transitions, 5162 flow [2024-06-27 19:11:16,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:16,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:16,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:16,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:11:16,785 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:16,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1598085666, now seen corresponding path program 5 times [2024-06-27 19:11:16,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:16,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725005855] [2024-06-27 19:11:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:17,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:17,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725005855] [2024-06-27 19:11:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725005855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:17,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:17,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:11:17,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217020842] [2024-06-27 19:11:17,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:17,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:11:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:11:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:11:17,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:17,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 397 transitions, 5162 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:17,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:17,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:17,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:20,026 INFO L124 PetriNetUnfolderBase]: 6649/11338 cut-off events. [2024-06-27 19:11:20,027 INFO L125 PetriNetUnfolderBase]: For 403772/403772 co-relation queries the response was YES. [2024-06-27 19:11:20,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76362 conditions, 11338 events. 6649/11338 cut-off events. For 403772/403772 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 84647 event pairs, 1666 based on Foata normal form. 26/11047 useless extension candidates. Maximal degree in co-relation 76246. Up to 8503 conditions per place. [2024-06-27 19:11:20,156 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 312 selfloop transitions, 132 changer transitions 0/456 dead transitions. [2024-06-27 19:11:20,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 456 transitions, 6651 flow [2024-06-27 19:11:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:11:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:11:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-27 19:11:20,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479166666666667 [2024-06-27 19:11:20,158 INFO L175 Difference]: Start difference. First operand has 253 places, 397 transitions, 5162 flow. Second operand 10 states and 263 transitions. [2024-06-27 19:11:20,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 456 transitions, 6651 flow [2024-06-27 19:11:20,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 456 transitions, 6386 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-27 19:11:20,853 INFO L231 Difference]: Finished difference. Result has 260 places, 403 transitions, 5403 flow [2024-06-27 19:11:20,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4919, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5403, PETRI_PLACES=260, PETRI_TRANSITIONS=403} [2024-06-27 19:11:20,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-27 19:11:20,854 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 403 transitions, 5403 flow [2024-06-27 19:11:20,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:20,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:20,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:20,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:11:20,854 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:20,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1942834868, now seen corresponding path program 1 times [2024-06-27 19:11:20,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:20,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348146480] [2024-06-27 19:11:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:20,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:20,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348146480] [2024-06-27 19:11:20,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348146480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:20,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:20,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:11:20,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192027220] [2024-06-27 19:11:20,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:20,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:11:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:11:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:11:20,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2024-06-27 19:11:20,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 403 transitions, 5403 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2024-06-27 19:11:20,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:20,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2024-06-27 19:11:20,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:22,296 INFO L124 PetriNetUnfolderBase]: 4549/8657 cut-off events. [2024-06-27 19:11:22,296 INFO L125 PetriNetUnfolderBase]: For 225307/225948 co-relation queries the response was YES. [2024-06-27 19:11:22,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50008 conditions, 8657 events. 4549/8657 cut-off events. For 225307/225948 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 71235 event pairs, 681 based on Foata normal form. 424/8516 useless extension candidates. Maximal degree in co-relation 49890. Up to 3202 conditions per place. [2024-06-27 19:11:22,420 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 138 selfloop transitions, 57 changer transitions 0/341 dead transitions. [2024-06-27 19:11:22,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 341 transitions, 5045 flow [2024-06-27 19:11:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:11:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:11:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-06-27 19:11:22,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2024-06-27 19:11:22,421 INFO L175 Difference]: Start difference. First operand has 260 places, 403 transitions, 5403 flow. Second operand 4 states and 139 transitions. [2024-06-27 19:11:22,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 341 transitions, 5045 flow [2024-06-27 19:11:22,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 341 transitions, 4262 flow, removed 75 selfloop flow, removed 34 redundant places. [2024-06-27 19:11:22,814 INFO L231 Difference]: Finished difference. Result has 231 places, 300 transitions, 3708 flow [2024-06-27 19:11:22,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3708, PETRI_PLACES=231, PETRI_TRANSITIONS=300} [2024-06-27 19:11:22,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 177 predicate places. [2024-06-27 19:11:22,815 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 300 transitions, 3708 flow [2024-06-27 19:11:22,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2024-06-27 19:11:22,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:22,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:22,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:11:22,816 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:22,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1451366990, now seen corresponding path program 1 times [2024-06-27 19:11:22,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:22,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659298760] [2024-06-27 19:11:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:22,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:23,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:23,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659298760] [2024-06-27 19:11:23,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659298760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:23,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:23,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:23,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672556147] [2024-06-27 19:11:23,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:23,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:23,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:23,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:23,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 300 transitions, 3708 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:23,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:23,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:23,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:25,171 INFO L124 PetriNetUnfolderBase]: 6017/10526 cut-off events. [2024-06-27 19:11:25,171 INFO L125 PetriNetUnfolderBase]: For 347489/347489 co-relation queries the response was YES. [2024-06-27 19:11:25,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68382 conditions, 10526 events. 6017/10526 cut-off events. For 347489/347489 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 79419 event pairs, 1947 based on Foata normal form. 2/10090 useless extension candidates. Maximal degree in co-relation 68277. Up to 8903 conditions per place. [2024-06-27 19:11:25,303 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 302 selfloop transitions, 22 changer transitions 0/337 dead transitions. [2024-06-27 19:11:25,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 337 transitions, 4561 flow [2024-06-27 19:11:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 19:11:25,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 19:11:25,304 INFO L175 Difference]: Start difference. First operand has 231 places, 300 transitions, 3708 flow. Second operand 8 states and 196 transitions. [2024-06-27 19:11:25,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 337 transitions, 4561 flow [2024-06-27 19:11:25,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 337 transitions, 4550 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:11:25,793 INFO L231 Difference]: Finished difference. Result has 238 places, 304 transitions, 3838 flow [2024-06-27 19:11:25,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3838, PETRI_PLACES=238, PETRI_TRANSITIONS=304} [2024-06-27 19:11:25,793 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 19:11:25,793 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 304 transitions, 3838 flow [2024-06-27 19:11:25,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:25,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:25,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:25,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:11:25,794 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:25,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash -287209654, now seen corresponding path program 2 times [2024-06-27 19:11:25,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:25,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577936048] [2024-06-27 19:11:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:25,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:26,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:26,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577936048] [2024-06-27 19:11:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577936048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:26,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:26,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697924446] [2024-06-27 19:11:26,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:26,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:26,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:26,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:26,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:26,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 304 transitions, 3838 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:26,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:26,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:26,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:28,474 INFO L124 PetriNetUnfolderBase]: 6054/10584 cut-off events. [2024-06-27 19:11:28,475 INFO L125 PetriNetUnfolderBase]: For 349439/349439 co-relation queries the response was YES. [2024-06-27 19:11:28,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68609 conditions, 10584 events. 6054/10584 cut-off events. For 349439/349439 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 79759 event pairs, 1947 based on Foata normal form. 2/10143 useless extension candidates. Maximal degree in co-relation 68500. Up to 8929 conditions per place. [2024-06-27 19:11:28,590 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 305 selfloop transitions, 31 changer transitions 0/349 dead transitions. [2024-06-27 19:11:28,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 349 transitions, 4805 flow [2024-06-27 19:11:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:11:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:11:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 19:11:28,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-27 19:11:28,592 INFO L175 Difference]: Start difference. First operand has 238 places, 304 transitions, 3838 flow. Second operand 9 states and 218 transitions. [2024-06-27 19:11:28,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 349 transitions, 4805 flow [2024-06-27 19:11:29,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 349 transitions, 4712 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 19:11:29,121 INFO L231 Difference]: Finished difference. Result has 243 places, 313 transitions, 3986 flow [2024-06-27 19:11:29,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3745, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3986, PETRI_PLACES=243, PETRI_TRANSITIONS=313} [2024-06-27 19:11:29,122 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-06-27 19:11:29,122 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 313 transitions, 3986 flow [2024-06-27 19:11:29,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:29,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:29,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:29,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:11:29,123 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:29,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:29,123 INFO L85 PathProgramCache]: Analyzing trace with hash -559498266, now seen corresponding path program 3 times [2024-06-27 19:11:29,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:29,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324765715] [2024-06-27 19:11:29,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:29,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324765715] [2024-06-27 19:11:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324765715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:29,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:29,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152292028] [2024-06-27 19:11:29,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:29,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:29,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:29,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 313 transitions, 3986 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:29,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:29,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:29,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:31,452 INFO L124 PetriNetUnfolderBase]: 6073/10608 cut-off events. [2024-06-27 19:11:31,452 INFO L125 PetriNetUnfolderBase]: For 357932/357934 co-relation queries the response was YES. [2024-06-27 19:11:31,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69176 conditions, 10608 events. 6073/10608 cut-off events. For 357932/357934 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 80005 event pairs, 1959 based on Foata normal form. 2/10164 useless extension candidates. Maximal degree in co-relation 69065. Up to 8916 conditions per place. [2024-06-27 19:11:31,592 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 297 selfloop transitions, 34 changer transitions 0/344 dead transitions. [2024-06-27 19:11:31,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 344 transitions, 4832 flow [2024-06-27 19:11:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:11:31,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-27 19:11:31,593 INFO L175 Difference]: Start difference. First operand has 243 places, 313 transitions, 3986 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:11:31,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 344 transitions, 4832 flow [2024-06-27 19:11:32,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 344 transitions, 4721 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 19:11:32,274 INFO L231 Difference]: Finished difference. Result has 245 places, 316 transitions, 4033 flow [2024-06-27 19:11:32,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3875, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4033, PETRI_PLACES=245, PETRI_TRANSITIONS=316} [2024-06-27 19:11:32,275 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 191 predicate places. [2024-06-27 19:11:32,275 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 316 transitions, 4033 flow [2024-06-27 19:11:32,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:32,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:32,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:32,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:11:32,275 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:32,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1000438162, now seen corresponding path program 4 times [2024-06-27 19:11:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:32,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047929052] [2024-06-27 19:11:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:32,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:32,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047929052] [2024-06-27 19:11:32,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047929052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:32,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:32,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:32,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549204516] [2024-06-27 19:11:32,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:32,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:32,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:32,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:32,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:32,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:32,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 316 transitions, 4033 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:32,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:32,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:32,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:34,718 INFO L124 PetriNetUnfolderBase]: 6092/10642 cut-off events. [2024-06-27 19:11:34,718 INFO L125 PetriNetUnfolderBase]: For 366760/366762 co-relation queries the response was YES. [2024-06-27 19:11:34,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69671 conditions, 10642 events. 6092/10642 cut-off events. For 366760/366762 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 80272 event pairs, 1959 based on Foata normal form. 2/10195 useless extension candidates. Maximal degree in co-relation 69559. Up to 8908 conditions per place. [2024-06-27 19:11:34,863 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 289 selfloop transitions, 44 changer transitions 0/346 dead transitions. [2024-06-27 19:11:34,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 346 transitions, 4908 flow [2024-06-27 19:11:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 19:11:34,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 19:11:34,865 INFO L175 Difference]: Start difference. First operand has 245 places, 316 transitions, 4033 flow. Second operand 8 states and 196 transitions. [2024-06-27 19:11:34,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 346 transitions, 4908 flow [2024-06-27 19:11:35,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 346 transitions, 4776 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 19:11:35,456 INFO L231 Difference]: Finished difference. Result has 247 places, 319 transitions, 4086 flow [2024-06-27 19:11:35,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3901, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4086, PETRI_PLACES=247, PETRI_TRANSITIONS=319} [2024-06-27 19:11:35,457 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 193 predicate places. [2024-06-27 19:11:35,457 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 319 transitions, 4086 flow [2024-06-27 19:11:35,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:35,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:35,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:35,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:11:35,458 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:35,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash 42302662, now seen corresponding path program 5 times [2024-06-27 19:11:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:35,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813414905] [2024-06-27 19:11:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:35,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:36,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:36,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813414905] [2024-06-27 19:11:36,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813414905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:36,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:36,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:36,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115291690] [2024-06-27 19:11:36,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:36,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:36,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:36,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:36,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 319 transitions, 4086 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:36,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:36,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:36,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:38,142 INFO L124 PetriNetUnfolderBase]: 6111/10673 cut-off events. [2024-06-27 19:11:38,143 INFO L125 PetriNetUnfolderBase]: For 375532/375534 co-relation queries the response was YES. [2024-06-27 19:11:38,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70153 conditions, 10673 events. 6111/10673 cut-off events. For 375532/375534 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 80465 event pairs, 1954 based on Foata normal form. 2/10224 useless extension candidates. Maximal degree in co-relation 70041. Up to 9011 conditions per place. [2024-06-27 19:11:38,278 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 296 selfloop transitions, 35 changer transitions 0/344 dead transitions. [2024-06-27 19:11:38,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 344 transitions, 4924 flow [2024-06-27 19:11:38,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 19:11:38,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-27 19:11:38,279 INFO L175 Difference]: Start difference. First operand has 247 places, 319 transitions, 4086 flow. Second operand 8 states and 189 transitions. [2024-06-27 19:11:38,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 344 transitions, 4924 flow [2024-06-27 19:11:38,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 344 transitions, 4771 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 19:11:38,893 INFO L231 Difference]: Finished difference. Result has 249 places, 322 transitions, 4106 flow [2024-06-27 19:11:38,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3933, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4106, PETRI_PLACES=249, PETRI_TRANSITIONS=322} [2024-06-27 19:11:38,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-27 19:11:38,894 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 322 transitions, 4106 flow [2024-06-27 19:11:38,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:38,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:38,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:38,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:11:38,894 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:38,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:38,895 INFO L85 PathProgramCache]: Analyzing trace with hash 842541842, now seen corresponding path program 6 times [2024-06-27 19:11:38,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:38,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697549355] [2024-06-27 19:11:38,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:38,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:39,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:39,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697549355] [2024-06-27 19:11:39,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697549355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:39,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:39,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:39,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699956550] [2024-06-27 19:11:39,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:39,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:39,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:39,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:39,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:39,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 322 transitions, 4106 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:39,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:39,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:39,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:41,453 INFO L124 PetriNetUnfolderBase]: 6155/10743 cut-off events. [2024-06-27 19:11:41,453 INFO L125 PetriNetUnfolderBase]: For 390101/390103 co-relation queries the response was YES. [2024-06-27 19:11:41,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71135 conditions, 10743 events. 6155/10743 cut-off events. For 390101/390103 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 81044 event pairs, 1960 based on Foata normal form. 2/10287 useless extension candidates. Maximal degree in co-relation 71022. Up to 8880 conditions per place. [2024-06-27 19:11:41,792 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 268 selfloop transitions, 74 changer transitions 0/355 dead transitions. [2024-06-27 19:11:41,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 355 transitions, 5248 flow [2024-06-27 19:11:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 19:11:41,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 19:11:41,793 INFO L175 Difference]: Start difference. First operand has 249 places, 322 transitions, 4106 flow. Second operand 8 states and 196 transitions. [2024-06-27 19:11:41,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 355 transitions, 5248 flow [2024-06-27 19:11:42,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 355 transitions, 5075 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-27 19:11:42,397 INFO L231 Difference]: Finished difference. Result has 251 places, 328 transitions, 4286 flow [2024-06-27 19:11:42,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3933, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4286, PETRI_PLACES=251, PETRI_TRANSITIONS=328} [2024-06-27 19:11:42,399 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-06-27 19:11:42,399 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 328 transitions, 4286 flow [2024-06-27 19:11:42,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:42,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:42,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:42,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:11:42,400 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:42,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1906895014, now seen corresponding path program 1 times [2024-06-27 19:11:42,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:42,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291439375] [2024-06-27 19:11:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:42,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:42,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:42,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291439375] [2024-06-27 19:11:42,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291439375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:42,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602223516] [2024-06-27 19:11:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:42,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:43,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:43,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 328 transitions, 4286 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:43,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:43,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:43,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:44,861 INFO L124 PetriNetUnfolderBase]: 6186/10786 cut-off events. [2024-06-27 19:11:44,862 INFO L125 PetriNetUnfolderBase]: For 401111/401111 co-relation queries the response was YES. [2024-06-27 19:11:44,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71808 conditions, 10786 events. 6186/10786 cut-off events. For 401111/401111 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 81082 event pairs, 1690 based on Foata normal form. 2/10329 useless extension candidates. Maximal degree in co-relation 71695. Up to 9083 conditions per place. [2024-06-27 19:11:45,003 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 337 selfloop transitions, 21 changer transitions 0/371 dead transitions. [2024-06-27 19:11:45,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 371 transitions, 5193 flow [2024-06-27 19:11:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 19:11:45,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 19:11:45,018 INFO L175 Difference]: Start difference. First operand has 251 places, 328 transitions, 4286 flow. Second operand 8 states and 200 transitions. [2024-06-27 19:11:45,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 371 transitions, 5193 flow [2024-06-27 19:11:45,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 371 transitions, 5051 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-27 19:11:45,781 INFO L231 Difference]: Finished difference. Result has 256 places, 333 transitions, 4270 flow [2024-06-27 19:11:45,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4270, PETRI_PLACES=256, PETRI_TRANSITIONS=333} [2024-06-27 19:11:45,782 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 202 predicate places. [2024-06-27 19:11:45,782 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 333 transitions, 4270 flow [2024-06-27 19:11:45,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:45,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:45,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:45,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:11:45,783 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:45,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:45,783 INFO L85 PathProgramCache]: Analyzing trace with hash 438279956, now seen corresponding path program 2 times [2024-06-27 19:11:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:45,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968086083] [2024-06-27 19:11:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:46,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:46,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968086083] [2024-06-27 19:11:46,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968086083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:46,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:46,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:46,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93355994] [2024-06-27 19:11:46,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:46,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:46,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:46,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:46,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:46,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 333 transitions, 4270 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:46,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:46,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:46,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:48,465 INFO L124 PetriNetUnfolderBase]: 6217/10844 cut-off events. [2024-06-27 19:11:48,465 INFO L125 PetriNetUnfolderBase]: For 409810/409810 co-relation queries the response was YES. [2024-06-27 19:11:48,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72829 conditions, 10844 events. 6217/10844 cut-off events. For 409810/409810 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 81742 event pairs, 1946 based on Foata normal form. 2/10385 useless extension candidates. Maximal degree in co-relation 72713. Up to 9167 conditions per place. [2024-06-27 19:11:48,618 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 331 selfloop transitions, 24 changer transitions 0/368 dead transitions. [2024-06-27 19:11:48,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 368 transitions, 5147 flow [2024-06-27 19:11:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 19:11:48,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-27 19:11:48,619 INFO L175 Difference]: Start difference. First operand has 256 places, 333 transitions, 4270 flow. Second operand 8 states and 195 transitions. [2024-06-27 19:11:48,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 368 transitions, 5147 flow [2024-06-27 19:11:49,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 368 transitions, 5065 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 19:11:49,337 INFO L231 Difference]: Finished difference. Result has 259 places, 335 transitions, 4302 flow [2024-06-27 19:11:49,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4188, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4302, PETRI_PLACES=259, PETRI_TRANSITIONS=335} [2024-06-27 19:11:49,337 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 205 predicate places. [2024-06-27 19:11:49,338 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 335 transitions, 4302 flow [2024-06-27 19:11:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:49,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:49,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:49,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:11:49,338 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:49,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:49,338 INFO L85 PathProgramCache]: Analyzing trace with hash 837777266, now seen corresponding path program 3 times [2024-06-27 19:11:49,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:49,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375095297] [2024-06-27 19:11:49,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:49,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:50,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:50,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375095297] [2024-06-27 19:11:50,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375095297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:50,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:50,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:50,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761717386] [2024-06-27 19:11:50,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:50,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:50,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:50,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:50,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:50,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:50,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 335 transitions, 4302 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:50,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:50,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:50,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:52,228 INFO L124 PetriNetUnfolderBase]: 6248/10894 cut-off events. [2024-06-27 19:11:52,229 INFO L125 PetriNetUnfolderBase]: For 421683/421685 co-relation queries the response was YES. [2024-06-27 19:11:52,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73380 conditions, 10894 events. 6248/10894 cut-off events. For 421683/421685 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 82240 event pairs, 1956 based on Foata normal form. 2/10433 useless extension candidates. Maximal degree in co-relation 73263. Up to 9192 conditions per place. [2024-06-27 19:11:52,363 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 315 selfloop transitions, 34 changer transitions 0/362 dead transitions. [2024-06-27 19:11:52,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 362 transitions, 5140 flow [2024-06-27 19:11:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 19:11:52,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 19:11:52,364 INFO L175 Difference]: Start difference. First operand has 259 places, 335 transitions, 4302 flow. Second operand 8 states and 191 transitions. [2024-06-27 19:11:52,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 362 transitions, 5140 flow [2024-06-27 19:11:53,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 362 transitions, 5040 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 19:11:53,116 INFO L231 Difference]: Finished difference. Result has 261 places, 337 transitions, 4340 flow [2024-06-27 19:11:53,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4202, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4340, PETRI_PLACES=261, PETRI_TRANSITIONS=337} [2024-06-27 19:11:53,117 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 207 predicate places. [2024-06-27 19:11:53,117 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 337 transitions, 4340 flow [2024-06-27 19:11:53,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:53,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:53,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:53,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:11:53,118 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:53,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1302131278, now seen corresponding path program 1 times [2024-06-27 19:11:53,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:53,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818933844] [2024-06-27 19:11:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:53,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:53,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:53,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818933844] [2024-06-27 19:11:53,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818933844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:53,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:53,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:53,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061365503] [2024-06-27 19:11:53,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:53,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:53,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:53,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:53,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:53,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:53,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 337 transitions, 4340 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:53,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:53,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:53,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:55,834 INFO L124 PetriNetUnfolderBase]: 6257/10904 cut-off events. [2024-06-27 19:11:55,835 INFO L125 PetriNetUnfolderBase]: For 427230/427230 co-relation queries the response was YES. [2024-06-27 19:11:55,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73509 conditions, 10904 events. 6257/10904 cut-off events. For 427230/427230 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 82199 event pairs, 1958 based on Foata normal form. 1/10438 useless extension candidates. Maximal degree in co-relation 73391. Up to 9201 conditions per place. [2024-06-27 19:11:56,010 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 326 selfloop transitions, 31 changer transitions 0/370 dead transitions. [2024-06-27 19:11:56,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 370 transitions, 5201 flow [2024-06-27 19:11:56,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:56,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 19:11:56,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 19:11:56,011 INFO L175 Difference]: Start difference. First operand has 261 places, 337 transitions, 4340 flow. Second operand 8 states and 196 transitions. [2024-06-27 19:11:56,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 370 transitions, 5201 flow [2024-06-27 19:11:56,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 370 transitions, 5081 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 19:11:56,970 INFO L231 Difference]: Finished difference. Result has 263 places, 340 transitions, 4340 flow [2024-06-27 19:11:56,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4340, PETRI_PLACES=263, PETRI_TRANSITIONS=340} [2024-06-27 19:11:56,970 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-27 19:11:56,971 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 340 transitions, 4340 flow [2024-06-27 19:11:56,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:56,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:56,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:56,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:11:56,971 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:11:56,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:56,972 INFO L85 PathProgramCache]: Analyzing trace with hash 976260358, now seen corresponding path program 7 times [2024-06-27 19:11:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:56,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248942197] [2024-06-27 19:11:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:56,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:57,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:57,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248942197] [2024-06-27 19:11:57,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248942197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:57,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:57,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:57,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215959362] [2024-06-27 19:11:57,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:57,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:57,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:57,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:57,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:57,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:11:57,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 340 transitions, 4340 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:11:57,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:57,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:11:57,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:59,383 INFO L124 PetriNetUnfolderBase]: 6276/10931 cut-off events. [2024-06-27 19:11:59,383 INFO L125 PetriNetUnfolderBase]: For 436105/436105 co-relation queries the response was YES. [2024-06-27 19:11:59,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73602 conditions, 10931 events. 6276/10931 cut-off events. For 436105/436105 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 82484 event pairs, 1964 based on Foata normal form. 2/10457 useless extension candidates. Maximal degree in co-relation 73483. Up to 9196 conditions per place. [2024-06-27 19:11:59,530 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 322 selfloop transitions, 34 changer transitions 0/369 dead transitions. [2024-06-27 19:11:59,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 369 transitions, 5240 flow [2024-06-27 19:11:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 19:11:59,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-27 19:11:59,531 INFO L175 Difference]: Start difference. First operand has 263 places, 340 transitions, 4340 flow. Second operand 8 states and 194 transitions. [2024-06-27 19:11:59,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 369 transitions, 5240 flow [2024-06-27 19:12:00,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 369 transitions, 5156 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:12:00,675 INFO L231 Difference]: Finished difference. Result has 265 places, 343 transitions, 4424 flow [2024-06-27 19:12:00,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4256, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4424, PETRI_PLACES=265, PETRI_TRANSITIONS=343} [2024-06-27 19:12:00,675 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-06-27 19:12:00,675 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 343 transitions, 4424 flow [2024-06-27 19:12:00,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:00,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:00,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:00,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:12:00,676 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:00,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:00,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1256680180, now seen corresponding path program 8 times [2024-06-27 19:12:00,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:00,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824428180] [2024-06-27 19:12:00,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:00,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:01,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824428180] [2024-06-27 19:12:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824428180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:01,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:01,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:01,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866906577] [2024-06-27 19:12:01,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:01,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:01,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:01,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:01,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:01,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:01,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 343 transitions, 4424 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:01,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:01,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:01,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:03,344 INFO L124 PetriNetUnfolderBase]: 6270/10923 cut-off events. [2024-06-27 19:12:03,344 INFO L125 PetriNetUnfolderBase]: For 440246/440246 co-relation queries the response was YES. [2024-06-27 19:12:03,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73512 conditions, 10923 events. 6270/10923 cut-off events. For 440246/440246 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 82428 event pairs, 1964 based on Foata normal form. 2/10449 useless extension candidates. Maximal degree in co-relation 73392. Up to 9165 conditions per place. [2024-06-27 19:12:03,487 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 314 selfloop transitions, 41 changer transitions 0/368 dead transitions. [2024-06-27 19:12:03,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 368 transitions, 5253 flow [2024-06-27 19:12:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 19:12:03,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-27 19:12:03,489 INFO L175 Difference]: Start difference. First operand has 265 places, 343 transitions, 4424 flow. Second operand 8 states and 194 transitions. [2024-06-27 19:12:03,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 368 transitions, 5253 flow [2024-06-27 19:12:04,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 368 transitions, 5018 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-27 19:12:04,366 INFO L231 Difference]: Finished difference. Result has 264 places, 343 transitions, 4278 flow [2024-06-27 19:12:04,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4189, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4278, PETRI_PLACES=264, PETRI_TRANSITIONS=343} [2024-06-27 19:12:04,366 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 210 predicate places. [2024-06-27 19:12:04,367 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 343 transitions, 4278 flow [2024-06-27 19:12:04,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:04,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:04,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:04,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:12:04,367 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:04,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash -262984406, now seen corresponding path program 9 times [2024-06-27 19:12:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236987562] [2024-06-27 19:12:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:04,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:04,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236987562] [2024-06-27 19:12:04,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236987562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:04,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:04,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923331114] [2024-06-27 19:12:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:04,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:04,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:04,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:05,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:05,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 343 transitions, 4278 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:05,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:05,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:05,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:06,897 INFO L124 PetriNetUnfolderBase]: 6333/11024 cut-off events. [2024-06-27 19:12:06,897 INFO L125 PetriNetUnfolderBase]: For 459645/459645 co-relation queries the response was YES. [2024-06-27 19:12:07,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74477 conditions, 11024 events. 6333/11024 cut-off events. For 459645/459645 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 83198 event pairs, 1964 based on Foata normal form. 4/10543 useless extension candidates. Maximal degree in co-relation 74357. Up to 9053 conditions per place. [2024-06-27 19:12:07,054 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 298 selfloop transitions, 62 changer transitions 0/373 dead transitions. [2024-06-27 19:12:07,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 373 transitions, 5449 flow [2024-06-27 19:12:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:07,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 19:12:07,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 19:12:07,055 INFO L175 Difference]: Start difference. First operand has 264 places, 343 transitions, 4278 flow. Second operand 8 states and 196 transitions. [2024-06-27 19:12:07,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 373 transitions, 5449 flow [2024-06-27 19:12:07,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 373 transitions, 5294 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 19:12:07,963 INFO L231 Difference]: Finished difference. Result has 265 places, 350 transitions, 4467 flow [2024-06-27 19:12:07,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4467, PETRI_PLACES=265, PETRI_TRANSITIONS=350} [2024-06-27 19:12:07,964 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-06-27 19:12:07,964 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 350 transitions, 4467 flow [2024-06-27 19:12:07,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:07,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:07,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:07,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:12:07,965 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:07,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:07,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1420869832, now seen corresponding path program 10 times [2024-06-27 19:12:07,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:07,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887452602] [2024-06-27 19:12:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:07,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:08,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887452602] [2024-06-27 19:12:08,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887452602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:08,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:08,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:08,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853311742] [2024-06-27 19:12:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:08,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:08,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:08,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:08,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:08,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 350 transitions, 4467 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:08,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:08,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:08,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:10,594 INFO L124 PetriNetUnfolderBase]: 6397/11115 cut-off events. [2024-06-27 19:12:10,594 INFO L125 PetriNetUnfolderBase]: For 484106/484106 co-relation queries the response was YES. [2024-06-27 19:12:10,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76469 conditions, 11115 events. 6397/11115 cut-off events. For 484106/484106 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 83952 event pairs, 1992 based on Foata normal form. 4/10624 useless extension candidates. Maximal degree in co-relation 76348. Up to 8763 conditions per place. [2024-06-27 19:12:10,760 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 261 selfloop transitions, 109 changer transitions 0/383 dead transitions. [2024-06-27 19:12:10,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 383 transitions, 5901 flow [2024-06-27 19:12:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:12:10,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:12:10,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 19:12:10,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 19:12:10,762 INFO L175 Difference]: Start difference. First operand has 265 places, 350 transitions, 4467 flow. Second operand 9 states and 216 transitions. [2024-06-27 19:12:10,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 383 transitions, 5901 flow [2024-06-27 19:12:11,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 383 transitions, 5739 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 19:12:11,630 INFO L231 Difference]: Finished difference. Result has 271 places, 359 transitions, 4787 flow [2024-06-27 19:12:11,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4306, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4787, PETRI_PLACES=271, PETRI_TRANSITIONS=359} [2024-06-27 19:12:11,630 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 217 predicate places. [2024-06-27 19:12:11,631 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 359 transitions, 4787 flow [2024-06-27 19:12:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:11,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:11,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:11,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:12:11,631 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:11,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:11,632 INFO L85 PathProgramCache]: Analyzing trace with hash 915269894, now seen corresponding path program 11 times [2024-06-27 19:12:11,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:11,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694169899] [2024-06-27 19:12:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:11,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:12,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694169899] [2024-06-27 19:12:12,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694169899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:12,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:12,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163254379] [2024-06-27 19:12:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:12,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:12,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:12,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 359 transitions, 4787 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:12,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:12,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:12,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:14,408 INFO L124 PetriNetUnfolderBase]: 6460/11210 cut-off events. [2024-06-27 19:12:14,408 INFO L125 PetriNetUnfolderBase]: For 505306/505306 co-relation queries the response was YES. [2024-06-27 19:12:14,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78403 conditions, 11210 events. 6460/11210 cut-off events. For 505306/505306 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 84693 event pairs, 1997 based on Foata normal form. 4/10710 useless extension candidates. Maximal degree in co-relation 78279. Up to 8816 conditions per place. [2024-06-27 19:12:14,560 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 260 selfloop transitions, 118 changer transitions 0/391 dead transitions. [2024-06-27 19:12:14,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 391 transitions, 6248 flow [2024-06-27 19:12:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 19:12:14,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 19:12:14,561 INFO L175 Difference]: Start difference. First operand has 271 places, 359 transitions, 4787 flow. Second operand 8 states and 199 transitions. [2024-06-27 19:12:14,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 391 transitions, 6248 flow [2024-06-27 19:12:15,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 391 transitions, 5954 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-27 19:12:15,555 INFO L231 Difference]: Finished difference. Result has 275 places, 367 transitions, 5011 flow [2024-06-27 19:12:15,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4537, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5011, PETRI_PLACES=275, PETRI_TRANSITIONS=367} [2024-06-27 19:12:15,555 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-27 19:12:15,556 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 367 transitions, 5011 flow [2024-06-27 19:12:15,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:15,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:15,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:15,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:12:15,556 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:15,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash -690597142, now seen corresponding path program 12 times [2024-06-27 19:12:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:15,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423738486] [2024-06-27 19:12:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:16,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423738486] [2024-06-27 19:12:16,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423738486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:16,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:16,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:16,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805704161] [2024-06-27 19:12:16,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:16,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:16,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:16,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:16,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 367 transitions, 5011 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:16,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:16,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:16,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:18,799 INFO L124 PetriNetUnfolderBase]: 6448/11205 cut-off events. [2024-06-27 19:12:18,799 INFO L125 PetriNetUnfolderBase]: For 497905/497905 co-relation queries the response was YES. [2024-06-27 19:12:18,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77498 conditions, 11205 events. 6448/11205 cut-off events. For 497905/497905 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 84579 event pairs, 1969 based on Foata normal form. 4/10705 useless extension candidates. Maximal degree in co-relation 77372. Up to 9399 conditions per place. [2024-06-27 19:12:18,937 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 325 selfloop transitions, 45 changer transitions 0/383 dead transitions. [2024-06-27 19:12:18,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 383 transitions, 5817 flow [2024-06-27 19:12:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 19:12:18,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-27 19:12:18,938 INFO L175 Difference]: Start difference. First operand has 275 places, 367 transitions, 5011 flow. Second operand 8 states and 189 transitions. [2024-06-27 19:12:18,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 383 transitions, 5817 flow [2024-06-27 19:12:19,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 383 transitions, 5524 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-06-27 19:12:19,887 INFO L231 Difference]: Finished difference. Result has 278 places, 367 transitions, 4815 flow [2024-06-27 19:12:19,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4718, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4815, PETRI_PLACES=278, PETRI_TRANSITIONS=367} [2024-06-27 19:12:19,888 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-06-27 19:12:19,888 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 367 transitions, 4815 flow [2024-06-27 19:12:19,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:19,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:19,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:19,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:12:19,889 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:19,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 910505318, now seen corresponding path program 4 times [2024-06-27 19:12:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15621179] [2024-06-27 19:12:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:20,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:20,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15621179] [2024-06-27 19:12:20,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15621179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:20,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:20,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:20,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100840999] [2024-06-27 19:12:20,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:20,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:20,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:20,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:20,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:20,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 367 transitions, 4815 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:20,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:20,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:20,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:22,812 INFO L124 PetriNetUnfolderBase]: 6482/11272 cut-off events. [2024-06-27 19:12:22,812 INFO L125 PetriNetUnfolderBase]: For 489798/489798 co-relation queries the response was YES. [2024-06-27 19:12:23,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76793 conditions, 11272 events. 6482/11272 cut-off events. For 489798/489798 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 85197 event pairs, 1973 based on Foata normal form. 4/10769 useless extension candidates. Maximal degree in co-relation 76667. Up to 9427 conditions per place. [2024-06-27 19:12:23,177 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 332 selfloop transitions, 44 changer transitions 0/389 dead transitions. [2024-06-27 19:12:23,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 389 transitions, 5705 flow [2024-06-27 19:12:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 19:12:23,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 19:12:23,179 INFO L175 Difference]: Start difference. First operand has 278 places, 367 transitions, 4815 flow. Second operand 8 states and 191 transitions. [2024-06-27 19:12:23,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 389 transitions, 5705 flow [2024-06-27 19:12:24,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 389 transitions, 5471 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 19:12:24,198 INFO L231 Difference]: Finished difference. Result has 277 places, 370 transitions, 4759 flow [2024-06-27 19:12:24,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4581, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4759, PETRI_PLACES=277, PETRI_TRANSITIONS=370} [2024-06-27 19:12:24,199 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 223 predicate places. [2024-06-27 19:12:24,206 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 370 transitions, 4759 flow [2024-06-27 19:12:24,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:24,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:24,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:24,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:12:24,207 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:24,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:24,207 INFO L85 PathProgramCache]: Analyzing trace with hash -583152028, now seen corresponding path program 2 times [2024-06-27 19:12:24,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:24,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496069878] [2024-06-27 19:12:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:24,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496069878] [2024-06-27 19:12:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496069878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:24,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:24,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887755737] [2024-06-27 19:12:24,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:24,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:24,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:24,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:24,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:24,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 370 transitions, 4759 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:24,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:24,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:24,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:27,400 INFO L124 PetriNetUnfolderBase]: 6491/11291 cut-off events. [2024-06-27 19:12:27,400 INFO L125 PetriNetUnfolderBase]: For 491249/491249 co-relation queries the response was YES. [2024-06-27 19:12:27,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77131 conditions, 11291 events. 6491/11291 cut-off events. For 491249/491249 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 85271 event pairs, 1961 based on Foata normal form. 1/10785 useless extension candidates. Maximal degree in co-relation 77006. Up to 9514 conditions per place. [2024-06-27 19:12:27,548 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 356 selfloop transitions, 31 changer transitions 0/400 dead transitions. [2024-06-27 19:12:27,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 400 transitions, 5679 flow [2024-06-27 19:12:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 19:12:27,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 19:12:27,549 INFO L175 Difference]: Start difference. First operand has 277 places, 370 transitions, 4759 flow. Second operand 8 states and 193 transitions. [2024-06-27 19:12:27,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 400 transitions, 5679 flow [2024-06-27 19:12:28,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 400 transitions, 5523 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 19:12:28,577 INFO L231 Difference]: Finished difference. Result has 279 places, 373 transitions, 4729 flow [2024-06-27 19:12:28,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4603, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4729, PETRI_PLACES=279, PETRI_TRANSITIONS=373} [2024-06-27 19:12:28,578 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 225 predicate places. [2024-06-27 19:12:28,578 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 373 transitions, 4729 flow [2024-06-27 19:12:28,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:28,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:28,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:28,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:12:28,578 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:28,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash -936470940, now seen corresponding path program 3 times [2024-06-27 19:12:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:28,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178223352] [2024-06-27 19:12:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:28,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:29,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178223352] [2024-06-27 19:12:29,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178223352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:29,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:29,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:29,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439984760] [2024-06-27 19:12:29,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:29,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:29,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:29,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:29,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 373 transitions, 4729 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:29,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:29,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:29,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:31,893 INFO L124 PetriNetUnfolderBase]: 6500/11306 cut-off events. [2024-06-27 19:12:31,893 INFO L125 PetriNetUnfolderBase]: For 495046/495046 co-relation queries the response was YES. [2024-06-27 19:12:31,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76657 conditions, 11306 events. 6500/11306 cut-off events. For 495046/495046 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 85416 event pairs, 1961 based on Foata normal form. 1/10799 useless extension candidates. Maximal degree in co-relation 76531. Up to 9526 conditions per place. [2024-06-27 19:12:32,029 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 358 selfloop transitions, 32 changer transitions 0/403 dead transitions. [2024-06-27 19:12:32,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 403 transitions, 5661 flow [2024-06-27 19:12:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 19:12:32,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 19:12:32,030 INFO L175 Difference]: Start difference. First operand has 279 places, 373 transitions, 4729 flow. Second operand 8 states and 192 transitions. [2024-06-27 19:12:32,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 403 transitions, 5661 flow [2024-06-27 19:12:33,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 403 transitions, 5571 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 19:12:33,019 INFO L231 Difference]: Finished difference. Result has 281 places, 376 transitions, 4773 flow [2024-06-27 19:12:33,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4639, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4773, PETRI_PLACES=281, PETRI_TRANSITIONS=376} [2024-06-27 19:12:33,020 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 227 predicate places. [2024-06-27 19:12:33,020 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 376 transitions, 4773 flow [2024-06-27 19:12:33,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:33,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:33,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:33,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:12:33,020 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:33,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash -713069658, now seen corresponding path program 4 times [2024-06-27 19:12:33,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:33,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083021722] [2024-06-27 19:12:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:33,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:33,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:33,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083021722] [2024-06-27 19:12:33,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083021722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:33,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:33,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:33,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060504227] [2024-06-27 19:12:33,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:33,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:33,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:33,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:33,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 376 transitions, 4773 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:33,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:33,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:33,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:36,306 INFO L124 PetriNetUnfolderBase]: 6492/11295 cut-off events. [2024-06-27 19:12:36,306 INFO L125 PetriNetUnfolderBase]: For 501071/501071 co-relation queries the response was YES. [2024-06-27 19:12:36,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76535 conditions, 11295 events. 6492/11295 cut-off events. For 501071/501071 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 85418 event pairs, 1961 based on Foata normal form. 2/10789 useless extension candidates. Maximal degree in co-relation 76408. Up to 9471 conditions per place. [2024-06-27 19:12:36,452 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 343 selfloop transitions, 44 changer transitions 0/400 dead transitions. [2024-06-27 19:12:36,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 400 transitions, 5631 flow [2024-06-27 19:12:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 19:12:36,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 19:12:36,453 INFO L175 Difference]: Start difference. First operand has 281 places, 376 transitions, 4773 flow. Second operand 8 states and 192 transitions. [2024-06-27 19:12:36,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 400 transitions, 5631 flow [2024-06-27 19:12:37,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 400 transitions, 5511 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 19:12:37,603 INFO L231 Difference]: Finished difference. Result has 283 places, 376 transitions, 4749 flow [2024-06-27 19:12:37,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4749, PETRI_PLACES=283, PETRI_TRANSITIONS=376} [2024-06-27 19:12:37,606 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 229 predicate places. [2024-06-27 19:12:37,607 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 376 transitions, 4749 flow [2024-06-27 19:12:37,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:37,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:37,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:37,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:12:37,607 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:37,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:37,608 INFO L85 PathProgramCache]: Analyzing trace with hash -396448248, now seen corresponding path program 1 times [2024-06-27 19:12:37,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:37,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264509745] [2024-06-27 19:12:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:38,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:38,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264509745] [2024-06-27 19:12:38,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264509745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:38,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:38,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:38,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541535542] [2024-06-27 19:12:38,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:38,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:38,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:38,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:38,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:38,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:38,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 376 transitions, 4749 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:38,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:38,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:38,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:40,738 INFO L124 PetriNetUnfolderBase]: 6501/11310 cut-off events. [2024-06-27 19:12:40,739 INFO L125 PetriNetUnfolderBase]: For 506793/506793 co-relation queries the response was YES. [2024-06-27 19:12:40,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76737 conditions, 11310 events. 6501/11310 cut-off events. For 506793/506793 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 85443 event pairs, 1957 based on Foata normal form. 1/10802 useless extension candidates. Maximal degree in co-relation 76609. Up to 9530 conditions per place. [2024-06-27 19:12:40,905 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 357 selfloop transitions, 32 changer transitions 0/402 dead transitions. [2024-06-27 19:12:40,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 402 transitions, 5688 flow [2024-06-27 19:12:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 19:12:40,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 19:12:40,907 INFO L175 Difference]: Start difference. First operand has 283 places, 376 transitions, 4749 flow. Second operand 8 states and 188 transitions. [2024-06-27 19:12:40,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 402 transitions, 5688 flow [2024-06-27 19:12:42,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 402 transitions, 5564 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:12:42,095 INFO L231 Difference]: Finished difference. Result has 285 places, 381 transitions, 4802 flow [2024-06-27 19:12:42,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4802, PETRI_PLACES=285, PETRI_TRANSITIONS=381} [2024-06-27 19:12:42,095 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 231 predicate places. [2024-06-27 19:12:42,095 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 381 transitions, 4802 flow [2024-06-27 19:12:42,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:42,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:42,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:42,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:12:42,096 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:42,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:42,096 INFO L85 PathProgramCache]: Analyzing trace with hash -606471480, now seen corresponding path program 2 times [2024-06-27 19:12:42,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:42,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598269474] [2024-06-27 19:12:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:42,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:42,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598269474] [2024-06-27 19:12:42,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598269474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:42,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:42,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:42,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900957792] [2024-06-27 19:12:42,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:42,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:42,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:42,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:42,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 381 transitions, 4802 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:42,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:42,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:42,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:45,154 INFO L124 PetriNetUnfolderBase]: 6510/11322 cut-off events. [2024-06-27 19:12:45,154 INFO L125 PetriNetUnfolderBase]: For 519735/519735 co-relation queries the response was YES. [2024-06-27 19:12:45,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77366 conditions, 11322 events. 6510/11322 cut-off events. For 519735/519735 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 85472 event pairs, 1957 based on Foata normal form. 1/10813 useless extension candidates. Maximal degree in co-relation 77236. Up to 9527 conditions per place. [2024-06-27 19:12:45,303 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 356 selfloop transitions, 36 changer transitions 0/405 dead transitions. [2024-06-27 19:12:45,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 405 transitions, 5736 flow [2024-06-27 19:12:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 19:12:45,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 19:12:45,305 INFO L175 Difference]: Start difference. First operand has 285 places, 381 transitions, 4802 flow. Second operand 8 states and 188 transitions. [2024-06-27 19:12:45,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 405 transitions, 5736 flow [2024-06-27 19:12:46,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 405 transitions, 5634 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 19:12:46,403 INFO L231 Difference]: Finished difference. Result has 289 places, 384 transitions, 4860 flow [2024-06-27 19:12:46,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4700, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4860, PETRI_PLACES=289, PETRI_TRANSITIONS=384} [2024-06-27 19:12:46,404 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 235 predicate places. [2024-06-27 19:12:46,404 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 384 transitions, 4860 flow [2024-06-27 19:12:46,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:46,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:46,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:46,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:12:46,405 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:46,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:46,405 INFO L85 PathProgramCache]: Analyzing trace with hash -237917782, now seen corresponding path program 3 times [2024-06-27 19:12:46,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:46,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624170091] [2024-06-27 19:12:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:46,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:47,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624170091] [2024-06-27 19:12:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624170091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:47,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:47,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:47,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030514688] [2024-06-27 19:12:47,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:47,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:47,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:47,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:47,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:47,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:47,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 384 transitions, 4860 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:47,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:47,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:47,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:12:49,464 INFO L124 PetriNetUnfolderBase]: 6519/11330 cut-off events. [2024-06-27 19:12:49,464 INFO L125 PetriNetUnfolderBase]: For 534736/534736 co-relation queries the response was YES. [2024-06-27 19:12:49,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78041 conditions, 11330 events. 6519/11330 cut-off events. For 534736/534736 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 85575 event pairs, 1969 based on Foata normal form. 1/10818 useless extension candidates. Maximal degree in co-relation 77910. Up to 9451 conditions per place. [2024-06-27 19:12:49,615 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 338 selfloop transitions, 57 changer transitions 0/408 dead transitions. [2024-06-27 19:12:49,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 408 transitions, 5818 flow [2024-06-27 19:12:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:12:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:12:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 19:12:49,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 19:12:49,616 INFO L175 Difference]: Start difference. First operand has 289 places, 384 transitions, 4860 flow. Second operand 8 states and 188 transitions. [2024-06-27 19:12:49,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 408 transitions, 5818 flow [2024-06-27 19:12:50,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 408 transitions, 5684 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 19:12:51,004 INFO L231 Difference]: Finished difference. Result has 292 places, 390 transitions, 4992 flow [2024-06-27 19:12:51,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4726, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4992, PETRI_PLACES=292, PETRI_TRANSITIONS=390} [2024-06-27 19:12:51,004 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 238 predicate places. [2024-06-27 19:12:51,005 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 390 transitions, 4992 flow [2024-06-27 19:12:51,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:51,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:12:51,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:12:51,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:12:51,005 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:12:51,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:12:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1478373770, now seen corresponding path program 4 times [2024-06-27 19:12:51,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:12:51,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572789183] [2024-06-27 19:12:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:12:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:12:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:12:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:12:51,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:12:51,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572789183] [2024-06-27 19:12:51,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572789183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:12:51,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:12:51,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:12:51,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763396792] [2024-06-27 19:12:51,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:12:51,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:12:51,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:12:51,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:12:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:12:51,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 19:12:51,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 390 transitions, 4992 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:12:51,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:12:51,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 19:12:51,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand