./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe013_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/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:23:24,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:23:24,920 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:23:24,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:23:24,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:23:24,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:23:24,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:23:24,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:23:24,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:23:24,955 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:23:24,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:23:24,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:23:24,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:23:24,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:23:24,957 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:23:24,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:23:24,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:23:24,958 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:23:24,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:23:24,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:23:24,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:23:24,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:23:24,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:23:24,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:23:24,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:23:24,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:23:24,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:23:24,960 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:23:24,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:23:24,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:23:24,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:23:24,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:23:24,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:23:24,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:23:24,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:23:24,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:23:24,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:23:24,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:23:24,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:23:24,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:23:24,963 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:23:24,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:23:24,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:23:24,964 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:23:25,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:23:25,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:23:25,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:23:25,163 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:23:25,164 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:23:25,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 00:23:25,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:23:25,241 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:23:25,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:23:26,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:23:26,640 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:23:26,641 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:23:26,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af85e573/20f317ee062848a4a3bfee556f3c5b68/FLAGa1da42a37 [2024-06-28 00:23:26,679 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af85e573/20f317ee062848a4a3bfee556f3c5b68 [2024-06-28 00:23:26,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:23:26,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:23:26,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:23:26,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:23:26,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:23:26,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:23:25" (1/2) ... [2024-06-28 00:23:26,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c849e18 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:23:26, skipping insertion in model container [2024-06-28 00:23:26,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:23:25" (1/2) ... [2024-06-28 00:23:26,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2331dbf0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:23:26, skipping insertion in model container [2024-06-28 00:23:26,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:23:26" (2/2) ... [2024-06-28 00:23:26,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c849e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:26, skipping insertion in model container [2024-06-28 00:23:26,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:23:26" (2/2) ... [2024-06-28 00:23:26,700 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:23:26,721 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:23:26,722 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:23:26,722 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:23:26,722 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:23:26,723 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:23:26,723 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 00:23:26,759 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:23:27,071 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:23:27,083 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:23:27,177 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:23:27,208 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:23:27,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27 WrapperNode [2024-06-28 00:23:27,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:23:27,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:23:27,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:23:27,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:23:27,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,252 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 125 [2024-06-28 00:23:27,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:23:27,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:23:27,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:23:27,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:23:27,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,265 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,277 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:23:27,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:23:27,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:23:27,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:23:27,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:23:27,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (1/1) ... [2024-06-28 00:23:27,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:23:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:23:27,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:23:27,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:23:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:23:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:23:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:23:27,457 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:23:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:23:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:23:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:23:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:23:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:23:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:23:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:23:27,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:23:27,460 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:23:27,571 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:23:27,572 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:23:27,955 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:23:27,957 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:23:28,101 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:23:28,101 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:23:28,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:23:28 BoogieIcfgContainer [2024-06-28 00:23:28,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:23:28,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:23:28,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:23:28,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:23:28,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:23:25" (1/4) ... [2024-06-28 00:23:28,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480a91c2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:23:28, skipping insertion in model container [2024-06-28 00:23:28,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:23:26" (2/4) ... [2024-06-28 00:23:28,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480a91c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:23:28, skipping insertion in model container [2024-06-28 00:23:28,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:23:27" (3/4) ... [2024-06-28 00:23:28,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480a91c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:23:28, skipping insertion in model container [2024-06-28 00:23:28,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:23:28" (4/4) ... [2024-06-28 00:23:28,142 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:23:28,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:23:28,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:23:28,159 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:23:28,235 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:23:28,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:23:28,274 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 00:23:28,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:23:28,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:23:28,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:23:28,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 00:23:28,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:23:28,290 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;@54e851ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:23:28,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:23:28,292 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:23:28,292 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:23:28,292 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:23:28,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:28,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:23:28,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:28,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:28,297 INFO L85 PathProgramCache]: Analyzing trace with hash 362811812, now seen corresponding path program 1 times [2024-06-28 00:23:28,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:28,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085379068] [2024-06-28 00:23:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:28,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:28,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085379068] [2024-06-28 00:23:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085379068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:28,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:28,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:23:28,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809589589] [2024-06-28 00:23:28,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:28,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:23:28,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:28,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:23:28,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:23:28,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 00:23:28,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 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) [2024-06-28 00:23:28,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:28,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 00:23:28,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:29,076 INFO L124 PetriNetUnfolderBase]: 312/556 cut-off events. [2024-06-28 00:23:29,077 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-06-28 00:23:29,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 556 events. 312/556 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3027 event pairs, 64 based on Foata normal form. 9/536 useless extension candidates. Maximal degree in co-relation 1092. Up to 441 conditions per place. [2024-06-28 00:23:29,083 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 25 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-06-28 00:23:29,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 144 flow [2024-06-28 00:23:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:23:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:23:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-06-28 00:23:29,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-06-28 00:23:29,093 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 84 transitions. [2024-06-28 00:23:29,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 144 flow [2024-06-28 00:23:29,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 140 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:23:29,097 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 78 flow [2024-06-28 00:23:29,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-28 00:23:29,100 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2024-06-28 00:23:29,100 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 78 flow [2024-06-28 00:23:29,101 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) [2024-06-28 00:23:29,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:29,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:29,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:23:29,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:29,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:29,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1615943924, now seen corresponding path program 1 times [2024-06-28 00:23:29,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:29,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000662058] [2024-06-28 00:23:29,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:29,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000662058] [2024-06-28 00:23:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000662058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:23:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989581379] [2024-06-28 00:23:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:29,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:23:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:23:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:23:29,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 00:23:29,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:29,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:29,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 00:23:29,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:29,595 INFO L124 PetriNetUnfolderBase]: 307/565 cut-off events. [2024-06-28 00:23:29,596 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-28 00:23:29,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 307/565 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2950 event pairs, 151 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 1194. Up to 481 conditions per place. [2024-06-28 00:23:29,601 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 29 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2024-06-28 00:23:29,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 193 flow [2024-06-28 00:23:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:23:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:23:29,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-06-28 00:23:29,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-06-28 00:23:29,605 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 78 flow. Second operand 4 states and 110 transitions. [2024-06-28 00:23:29,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 193 flow [2024-06-28 00:23:29,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 187 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:23:29,608 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 121 flow [2024-06-28 00:23:29,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 00:23:29,609 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-06-28 00:23:29,609 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 121 flow [2024-06-28 00:23:29,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:29,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:29,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:29,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:23:29,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:29,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1445347293, now seen corresponding path program 1 times [2024-06-28 00:23:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:29,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217005571] [2024-06-28 00:23:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:29,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:29,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217005571] [2024-06-28 00:23:29,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217005571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:29,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:29,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:23:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123044864] [2024-06-28 00:23:29,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:29,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:23:29,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:23:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:23:30,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:30,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:30,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:30,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:30,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:30,126 INFO L124 PetriNetUnfolderBase]: 387/716 cut-off events. [2024-06-28 00:23:30,127 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-06-28 00:23:30,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 716 events. 387/716 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3947 event pairs, 192 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 1734. Up to 591 conditions per place. [2024-06-28 00:23:30,131 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 40 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2024-06-28 00:23:30,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 293 flow [2024-06-28 00:23:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:23:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:23:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 00:23:30,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6390243902439025 [2024-06-28 00:23:30,133 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 121 flow. Second operand 5 states and 131 transitions. [2024-06-28 00:23:30,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 293 flow [2024-06-28 00:23:30,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 293 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:23:30,134 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 205 flow [2024-06-28 00:23:30,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-06-28 00:23:30,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-28 00:23:30,135 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 205 flow [2024-06-28 00:23:30,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:30,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:30,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:30,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:23:30,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:30,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:30,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1856094539, now seen corresponding path program 1 times [2024-06-28 00:23:30,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:30,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306762057] [2024-06-28 00:23:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:30,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:30,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:30,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306762057] [2024-06-28 00:23:30,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306762057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:30,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:30,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:30,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672396446] [2024-06-28 00:23:30,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:30,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:30,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:30,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:23:30,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:30,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:30,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:23:30,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:31,076 INFO L124 PetriNetUnfolderBase]: 379/704 cut-off events. [2024-06-28 00:23:31,076 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-06-28 00:23:31,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 704 events. 379/704 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3884 event pairs, 179 based on Foata normal form. 4/699 useless extension candidates. Maximal degree in co-relation 1955. Up to 561 conditions per place. [2024-06-28 00:23:31,081 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 45 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2024-06-28 00:23:31,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 381 flow [2024-06-28 00:23:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 00:23:31,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578397212543554 [2024-06-28 00:23:31,084 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 205 flow. Second operand 7 states and 166 transitions. [2024-06-28 00:23:31,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 381 flow [2024-06-28 00:23:31,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 379 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 00:23:31,089 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 250 flow [2024-06-28 00:23:31,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-06-28 00:23:31,090 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-28 00:23:31,091 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 250 flow [2024-06-28 00:23:31,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:31,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:31,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:31,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:23:31,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:31,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:31,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1028916310, now seen corresponding path program 1 times [2024-06-28 00:23:31,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:31,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997274343] [2024-06-28 00:23:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:31,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:31,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997274343] [2024-06-28 00:23:31,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997274343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:31,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:31,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:23:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188176521] [2024-06-28 00:23:31,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:31,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:23:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:23:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:23:31,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 00:23:31,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 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) [2024-06-28 00:23:31,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:31,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 00:23:31,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:31,660 INFO L124 PetriNetUnfolderBase]: 397/746 cut-off events. [2024-06-28 00:23:31,660 INFO L125 PetriNetUnfolderBase]: For 1043/1049 co-relation queries the response was YES. [2024-06-28 00:23:31,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 746 events. 397/746 cut-off events. For 1043/1049 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4135 event pairs, 85 based on Foata normal form. 16/732 useless extension candidates. Maximal degree in co-relation 2225. Up to 489 conditions per place. [2024-06-28 00:23:31,665 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 37 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-06-28 00:23:31,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 404 flow [2024-06-28 00:23:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:23:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:23:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-06-28 00:23:31,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-06-28 00:23:31,667 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 250 flow. Second operand 4 states and 110 transitions. [2024-06-28 00:23:31,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 404 flow [2024-06-28 00:23:31,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 375 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:23:31,669 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 282 flow [2024-06-28 00:23:31,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-28 00:23:31,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-06-28 00:23:31,670 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 282 flow [2024-06-28 00:23:31,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 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) [2024-06-28 00:23:31,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:31,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:31,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:23:31,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:31,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1029036280, now seen corresponding path program 2 times [2024-06-28 00:23:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14580134] [2024-06-28 00:23:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:32,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:32,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14580134] [2024-06-28 00:23:32,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14580134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:32,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:32,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:23:32,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538484905] [2024-06-28 00:23:32,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:32,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:23:32,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:23:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:23:32,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 00:23:32,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 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) [2024-06-28 00:23:32,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:32,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 00:23:32,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:32,349 INFO L124 PetriNetUnfolderBase]: 385/726 cut-off events. [2024-06-28 00:23:32,349 INFO L125 PetriNetUnfolderBase]: For 1446/1482 co-relation queries the response was YES. [2024-06-28 00:23:32,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 726 events. 385/726 cut-off events. For 1446/1482 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4009 event pairs, 90 based on Foata normal form. 15/717 useless extension candidates. Maximal degree in co-relation 2383. Up to 509 conditions per place. [2024-06-28 00:23:32,353 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 40 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2024-06-28 00:23:32,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 461 flow [2024-06-28 00:23:32,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:23:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:23:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-28 00:23:32,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6536585365853659 [2024-06-28 00:23:32,355 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 282 flow. Second operand 5 states and 134 transitions. [2024-06-28 00:23:32,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 461 flow [2024-06-28 00:23:32,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 436 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 00:23:32,358 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 352 flow [2024-06-28 00:23:32,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-28 00:23:32,359 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-28 00:23:32,359 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 352 flow [2024-06-28 00:23:32,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 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) [2024-06-28 00:23:32,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:32,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:32,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:23:32,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:32,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:32,360 INFO L85 PathProgramCache]: Analyzing trace with hash 253419743, now seen corresponding path program 1 times [2024-06-28 00:23:32,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:32,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862988171] [2024-06-28 00:23:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:32,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:32,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:32,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862988171] [2024-06-28 00:23:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862988171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:32,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978019203] [2024-06-28 00:23:32,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:32,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:32,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 00:23:32,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:32,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:32,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 00:23:32,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:33,118 INFO L124 PetriNetUnfolderBase]: 428/799 cut-off events. [2024-06-28 00:23:33,118 INFO L125 PetriNetUnfolderBase]: For 1614/1614 co-relation queries the response was YES. [2024-06-28 00:23:33,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2725 conditions, 799 events. 428/799 cut-off events. For 1614/1614 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4456 event pairs, 76 based on Foata normal form. 4/794 useless extension candidates. Maximal degree in co-relation 2698. Up to 582 conditions per place. [2024-06-28 00:23:33,123 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 52 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2024-06-28 00:23:33,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 582 flow [2024-06-28 00:23:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 00:23:33,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691056910569106 [2024-06-28 00:23:33,125 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 352 flow. Second operand 6 states and 140 transitions. [2024-06-28 00:23:33,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 582 flow [2024-06-28 00:23:33,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 570 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 00:23:33,128 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 469 flow [2024-06-28 00:23:33,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-28 00:23:33,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-06-28 00:23:33,129 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 469 flow [2024-06-28 00:23:33,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:33,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:33,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:33,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:23:33,130 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:33,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash -504857099, now seen corresponding path program 2 times [2024-06-28 00:23:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623828581] [2024-06-28 00:23:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:33,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:33,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623828581] [2024-06-28 00:23:33,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623828581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:33,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:33,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:23:33,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026887391] [2024-06-28 00:23:33,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:33,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:23:33,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:23:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:23:33,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:33,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:33,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:33,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:33,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:33,774 INFO L124 PetriNetUnfolderBase]: 445/832 cut-off events. [2024-06-28 00:23:33,774 INFO L125 PetriNetUnfolderBase]: For 2127/2131 co-relation queries the response was YES. [2024-06-28 00:23:33,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 832 events. 445/832 cut-off events. For 2127/2131 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4710 event pairs, 74 based on Foata normal form. 4/828 useless extension candidates. Maximal degree in co-relation 3020. Up to 544 conditions per place. [2024-06-28 00:23:33,780 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 61 selfloop transitions, 20 changer transitions 0/92 dead transitions. [2024-06-28 00:23:33,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 748 flow [2024-06-28 00:23:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 00:23:33,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382113821138211 [2024-06-28 00:23:33,781 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 469 flow. Second operand 6 states and 157 transitions. [2024-06-28 00:23:33,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 748 flow [2024-06-28 00:23:33,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 734 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-06-28 00:23:33,787 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 557 flow [2024-06-28 00:23:33,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=557, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2024-06-28 00:23:33,787 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-06-28 00:23:33,787 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 557 flow [2024-06-28 00:23:33,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:33,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:33,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:33,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:23:33,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:33,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:33,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1290261549, now seen corresponding path program 3 times [2024-06-28 00:23:33,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:33,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725750233] [2024-06-28 00:23:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:33,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:34,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:34,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725750233] [2024-06-28 00:23:34,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725750233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:34,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:34,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:23:34,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489685452] [2024-06-28 00:23:34,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:34,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:23:34,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:23:34,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:23:34,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:34,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 557 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:34,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:34,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:34,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:34,533 INFO L124 PetriNetUnfolderBase]: 437/818 cut-off events. [2024-06-28 00:23:34,534 INFO L125 PetriNetUnfolderBase]: For 2663/2667 co-relation queries the response was YES. [2024-06-28 00:23:34,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3201 conditions, 818 events. 437/818 cut-off events. For 2663/2667 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4606 event pairs, 74 based on Foata normal form. 4/814 useless extension candidates. Maximal degree in co-relation 3163. Up to 538 conditions per place. [2024-06-28 00:23:34,539 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 60 selfloop transitions, 19 changer transitions 0/90 dead transitions. [2024-06-28 00:23:34,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 763 flow [2024-06-28 00:23:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 00:23:34,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 00:23:34,541 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 557 flow. Second operand 6 states and 156 transitions. [2024-06-28 00:23:34,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 763 flow [2024-06-28 00:23:34,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 742 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 00:23:34,548 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 581 flow [2024-06-28 00:23:34,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=581, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-06-28 00:23:34,549 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2024-06-28 00:23:34,549 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 581 flow [2024-06-28 00:23:34,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:34,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:34,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:34,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:23:34,550 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:34,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1670808267, now seen corresponding path program 1 times [2024-06-28 00:23:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:34,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734700828] [2024-06-28 00:23:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:34,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:35,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:35,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734700828] [2024-06-28 00:23:35,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734700828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:35,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:35,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:23:35,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65337529] [2024-06-28 00:23:35,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:35,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:23:35,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:23:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:23:35,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 00:23:35,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 581 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) [2024-06-28 00:23:35,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:35,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 00:23:35,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:35,551 INFO L124 PetriNetUnfolderBase]: 461/866 cut-off events. [2024-06-28 00:23:35,551 INFO L125 PetriNetUnfolderBase]: For 3085/3089 co-relation queries the response was YES. [2024-06-28 00:23:35,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3423 conditions, 866 events. 461/866 cut-off events. For 3085/3089 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4980 event pairs, 75 based on Foata normal form. 8/866 useless extension candidates. Maximal degree in co-relation 3382. Up to 613 conditions per place. [2024-06-28 00:23:35,557 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 75 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2024-06-28 00:23:35,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 98 transitions, 829 flow [2024-06-28 00:23:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:23:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:23:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 00:23:35,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551829268292683 [2024-06-28 00:23:35,559 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 581 flow. Second operand 8 states and 181 transitions. [2024-06-28 00:23:35,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 98 transitions, 829 flow [2024-06-28 00:23:35,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 98 transitions, 771 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:23:35,564 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 563 flow [2024-06-28 00:23:35,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2024-06-28 00:23:35,565 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2024-06-28 00:23:35,565 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 563 flow [2024-06-28 00:23:35,565 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) [2024-06-28 00:23:35,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:35,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:35,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:23:35,566 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:35,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash -257186679, now seen corresponding path program 2 times [2024-06-28 00:23:35,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:35,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491139444] [2024-06-28 00:23:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:35,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:36,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:36,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491139444] [2024-06-28 00:23:36,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491139444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:36,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:36,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:36,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670724524] [2024-06-28 00:23:36,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:36,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:36,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:36,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:36,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:36,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:36,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:36,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:36,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:36,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:36,501 INFO L124 PetriNetUnfolderBase]: 485/913 cut-off events. [2024-06-28 00:23:36,501 INFO L125 PetriNetUnfolderBase]: For 3644/3648 co-relation queries the response was YES. [2024-06-28 00:23:36,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3496 conditions, 913 events. 485/913 cut-off events. For 3644/3648 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5385 event pairs, 79 based on Foata normal form. 8/913 useless extension candidates. Maximal degree in co-relation 3455. Up to 580 conditions per place. [2024-06-28 00:23:36,507 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 67 selfloop transitions, 20 changer transitions 0/98 dead transitions. [2024-06-28 00:23:36,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 98 transitions, 807 flow [2024-06-28 00:23:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 00:23:36,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627177700348432 [2024-06-28 00:23:36,508 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 563 flow. Second operand 7 states and 180 transitions. [2024-06-28 00:23:36,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 98 transitions, 807 flow [2024-06-28 00:23:36,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 98 transitions, 754 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:23:36,514 INFO L231 Difference]: Finished difference. Result has 87 places, 72 transitions, 566 flow [2024-06-28 00:23:36,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=566, PETRI_PLACES=87, PETRI_TRANSITIONS=72} [2024-06-28 00:23:36,514 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-28 00:23:36,515 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 72 transitions, 566 flow [2024-06-28 00:23:36,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:36,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:36,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:36,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:23:36,515 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:36,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:36,516 INFO L85 PathProgramCache]: Analyzing trace with hash -889176371, now seen corresponding path program 3 times [2024-06-28 00:23:36,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:36,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945669713] [2024-06-28 00:23:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:36,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:37,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:37,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945669713] [2024-06-28 00:23:37,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945669713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:37,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:37,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:37,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989726329] [2024-06-28 00:23:37,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:37,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:37,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:37,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:37,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:37,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:37,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 72 transitions, 566 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:37,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:37,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:37,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:37,370 INFO L124 PetriNetUnfolderBase]: 509/979 cut-off events. [2024-06-28 00:23:37,371 INFO L125 PetriNetUnfolderBase]: For 4241/4245 co-relation queries the response was YES. [2024-06-28 00:23:37,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 979 events. 509/979 cut-off events. For 4241/4245 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5935 event pairs, 89 based on Foata normal form. 8/975 useless extension candidates. Maximal degree in co-relation 3630. Up to 624 conditions per place. [2024-06-28 00:23:37,377 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 67 selfloop transitions, 21 changer transitions 0/99 dead transitions. [2024-06-28 00:23:37,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 99 transitions, 814 flow [2024-06-28 00:23:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 00:23:37,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236933797909407 [2024-06-28 00:23:37,379 INFO L175 Difference]: Start difference. First operand has 87 places, 72 transitions, 566 flow. Second operand 7 states and 179 transitions. [2024-06-28 00:23:37,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 99 transitions, 814 flow [2024-06-28 00:23:37,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 99 transitions, 770 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:23:37,386 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 582 flow [2024-06-28 00:23:37,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=582, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-06-28 00:23:37,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-06-28 00:23:37,387 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 582 flow [2024-06-28 00:23:37,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:37,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:37,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:37,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:23:37,388 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:37,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:37,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1529307041, now seen corresponding path program 4 times [2024-06-28 00:23:37,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:37,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512990801] [2024-06-28 00:23:37,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:37,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512990801] [2024-06-28 00:23:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512990801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:38,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:23:38,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727038308] [2024-06-28 00:23:38,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:23:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:38,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:23:38,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:23:38,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:23:38,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 582 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:38,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:38,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:23:38,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:38,363 INFO L124 PetriNetUnfolderBase]: 497/964 cut-off events. [2024-06-28 00:23:38,363 INFO L125 PetriNetUnfolderBase]: For 4255/4259 co-relation queries the response was YES. [2024-06-28 00:23:38,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 964 events. 497/964 cut-off events. For 4255/4259 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5853 event pairs, 39 based on Foata normal form. 8/964 useless extension candidates. Maximal degree in co-relation 3544. Up to 448 conditions per place. [2024-06-28 00:23:38,370 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 60 selfloop transitions, 26 changer transitions 0/96 dead transitions. [2024-06-28 00:23:38,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 786 flow [2024-06-28 00:23:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:23:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:23:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 00:23:38,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5640243902439024 [2024-06-28 00:23:38,371 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 582 flow. Second operand 8 states and 185 transitions. [2024-06-28 00:23:38,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 786 flow [2024-06-28 00:23:38,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 96 transitions, 738 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:23:38,379 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 566 flow [2024-06-28 00:23:38,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=566, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-06-28 00:23:38,380 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2024-06-28 00:23:38,380 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 566 flow [2024-06-28 00:23:38,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:38,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:38,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:38,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:23:38,381 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:38,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash -629234464, now seen corresponding path program 1 times [2024-06-28 00:23:38,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:38,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447042926] [2024-06-28 00:23:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:38,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:38,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447042926] [2024-06-28 00:23:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447042926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:38,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:38,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:23:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441502489] [2024-06-28 00:23:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:23:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:23:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:23:38,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:38,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:38,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:38,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:38,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:38,934 INFO L124 PetriNetUnfolderBase]: 502/978 cut-off events. [2024-06-28 00:23:38,934 INFO L125 PetriNetUnfolderBase]: For 4200/4204 co-relation queries the response was YES. [2024-06-28 00:23:38,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3680 conditions, 978 events. 502/978 cut-off events. For 4200/4204 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5949 event pairs, 156 based on Foata normal form. 1/960 useless extension candidates. Maximal degree in co-relation 3637. Up to 777 conditions per place. [2024-06-28 00:23:38,944 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 62 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2024-06-28 00:23:38,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 94 transitions, 848 flow [2024-06-28 00:23:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 00:23:38,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2024-06-28 00:23:38,946 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 566 flow. Second operand 6 states and 154 transitions. [2024-06-28 00:23:38,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 94 transitions, 848 flow [2024-06-28 00:23:38,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 788 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:23:38,953 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 612 flow [2024-06-28 00:23:38,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=612, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-28 00:23:38,955 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2024-06-28 00:23:38,955 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 612 flow [2024-06-28 00:23:38,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:38,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:38,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:38,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:23:38,956 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:38,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash -629114494, now seen corresponding path program 2 times [2024-06-28 00:23:38,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:38,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430994826] [2024-06-28 00:23:38,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:38,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:39,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:39,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430994826] [2024-06-28 00:23:39,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430994826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:39,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:39,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:23:39,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721150089] [2024-06-28 00:23:39,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:39,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:23:39,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:23:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:23:39,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:39,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 612 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:39,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:39,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:39,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:39,550 INFO L124 PetriNetUnfolderBase]: 512/992 cut-off events. [2024-06-28 00:23:39,550 INFO L125 PetriNetUnfolderBase]: For 4622/4626 co-relation queries the response was YES. [2024-06-28 00:23:39,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3776 conditions, 992 events. 512/992 cut-off events. For 4622/4626 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5984 event pairs, 156 based on Foata normal form. 1/974 useless extension candidates. Maximal degree in co-relation 3733. Up to 803 conditions per place. [2024-06-28 00:23:39,557 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 66 selfloop transitions, 19 changer transitions 0/96 dead transitions. [2024-06-28 00:23:39,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 885 flow [2024-06-28 00:23:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 00:23:39,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6056910569105691 [2024-06-28 00:23:39,559 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 612 flow. Second operand 6 states and 149 transitions. [2024-06-28 00:23:39,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 885 flow [2024-06-28 00:23:39,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 836 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 00:23:39,568 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 686 flow [2024-06-28 00:23:39,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=686, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-28 00:23:39,569 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-06-28 00:23:39,569 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 686 flow [2024-06-28 00:23:39,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:39,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:39,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:39,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:23:39,570 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:39,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:39,571 INFO L85 PathProgramCache]: Analyzing trace with hash -12808568, now seen corresponding path program 3 times [2024-06-28 00:23:39,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:39,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361924014] [2024-06-28 00:23:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:39,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:39,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:39,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361924014] [2024-06-28 00:23:39,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361924014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:39,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:39,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:23:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558334044] [2024-06-28 00:23:39,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:23:39,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:23:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:23:39,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:39,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 686 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:39,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:39,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:39,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:40,043 INFO L124 PetriNetUnfolderBase]: 509/988 cut-off events. [2024-06-28 00:23:40,043 INFO L125 PetriNetUnfolderBase]: For 4979/4983 co-relation queries the response was YES. [2024-06-28 00:23:40,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3798 conditions, 988 events. 509/988 cut-off events. For 4979/4983 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5931 event pairs, 156 based on Foata normal form. 1/970 useless extension candidates. Maximal degree in co-relation 3753. Up to 793 conditions per place. [2024-06-28 00:23:40,049 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 68 selfloop transitions, 19 changer transitions 0/98 dead transitions. [2024-06-28 00:23:40,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 98 transitions, 896 flow [2024-06-28 00:23:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:23:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:23:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-28 00:23:40,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439024390243903 [2024-06-28 00:23:40,050 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 686 flow. Second operand 5 states and 132 transitions. [2024-06-28 00:23:40,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 98 transitions, 896 flow [2024-06-28 00:23:40,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 840 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 00:23:40,060 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 678 flow [2024-06-28 00:23:40,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=678, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-06-28 00:23:40,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2024-06-28 00:23:40,061 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 678 flow [2024-06-28 00:23:40,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:40,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:40,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:40,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:23:40,062 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:40,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1968479242, now seen corresponding path program 1 times [2024-06-28 00:23:40,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:40,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854517766] [2024-06-28 00:23:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:40,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:40,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:40,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854517766] [2024-06-28 00:23:40,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854517766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:40,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:40,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:23:40,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117097158] [2024-06-28 00:23:40,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:40,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:23:40,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:40,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:23:40,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:23:40,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:23:40,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 678 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) [2024-06-28 00:23:40,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:40,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:23:40,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:40,803 INFO L124 PetriNetUnfolderBase]: 550/1056 cut-off events. [2024-06-28 00:23:40,803 INFO L125 PetriNetUnfolderBase]: For 6442/6446 co-relation queries the response was YES. [2024-06-28 00:23:40,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4207 conditions, 1056 events. 550/1056 cut-off events. For 6442/6446 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6421 event pairs, 138 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 4160. Up to 757 conditions per place. [2024-06-28 00:23:40,814 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 72 selfloop transitions, 38 changer transitions 0/120 dead transitions. [2024-06-28 00:23:40,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 120 transitions, 1113 flow [2024-06-28 00:23:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:23:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:23:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 00:23:40,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-28 00:23:40,816 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 678 flow. Second operand 8 states and 194 transitions. [2024-06-28 00:23:40,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 120 transitions, 1113 flow [2024-06-28 00:23:40,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 120 transitions, 1065 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:23:40,829 INFO L231 Difference]: Finished difference. Result has 104 places, 93 transitions, 850 flow [2024-06-28 00:23:40,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=850, PETRI_PLACES=104, PETRI_TRANSITIONS=93} [2024-06-28 00:23:40,829 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2024-06-28 00:23:40,829 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 93 transitions, 850 flow [2024-06-28 00:23:40,830 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) [2024-06-28 00:23:40,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:40,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:40,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:23:40,830 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:40,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:40,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1968569452, now seen corresponding path program 2 times [2024-06-28 00:23:40,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:40,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088027455] [2024-06-28 00:23:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:40,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:41,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:41,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088027455] [2024-06-28 00:23:41,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088027455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:41,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:41,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:41,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593349341] [2024-06-28 00:23:41,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:41,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:41,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:41,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:41,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:41,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 850 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:41,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:41,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:41,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:41,494 INFO L124 PetriNetUnfolderBase]: 570/1094 cut-off events. [2024-06-28 00:23:41,495 INFO L125 PetriNetUnfolderBase]: For 8325/8329 co-relation queries the response was YES. [2024-06-28 00:23:41,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 1094 events. 570/1094 cut-off events. For 8325/8329 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6704 event pairs, 160 based on Foata normal form. 6/1080 useless extension candidates. Maximal degree in co-relation 4623. Up to 832 conditions per place. [2024-06-28 00:23:41,502 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 73 selfloop transitions, 34 changer transitions 0/118 dead transitions. [2024-06-28 00:23:41,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 1188 flow [2024-06-28 00:23:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 00:23:41,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236933797909407 [2024-06-28 00:23:41,503 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 850 flow. Second operand 7 states and 179 transitions. [2024-06-28 00:23:41,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 1188 flow [2024-06-28 00:23:41,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 118 transitions, 1140 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-28 00:23:41,516 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 913 flow [2024-06-28 00:23:41,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=913, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-06-28 00:23:41,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-28 00:23:41,517 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 913 flow [2024-06-28 00:23:41,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:41,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:41,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:41,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:23:41,518 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:41,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:41,518 INFO L85 PathProgramCache]: Analyzing trace with hash -982454972, now seen corresponding path program 1 times [2024-06-28 00:23:41,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:41,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524227347] [2024-06-28 00:23:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:41,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:41,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:41,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524227347] [2024-06-28 00:23:41,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524227347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:41,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:41,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:23:41,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210048012] [2024-06-28 00:23:41,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:41,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:23:41,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:23:41,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:23:41,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:41,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 913 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:41,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:41,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:41,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:42,101 INFO L124 PetriNetUnfolderBase]: 618/1173 cut-off events. [2024-06-28 00:23:42,101 INFO L125 PetriNetUnfolderBase]: For 9947/9951 co-relation queries the response was YES. [2024-06-28 00:23:42,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5084 conditions, 1173 events. 618/1173 cut-off events. For 9947/9951 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7293 event pairs, 130 based on Foata normal form. 6/1158 useless extension candidates. Maximal degree in co-relation 5031. Up to 839 conditions per place. [2024-06-28 00:23:42,108 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 83 selfloop transitions, 22 changer transitions 0/116 dead transitions. [2024-06-28 00:23:42,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 1255 flow [2024-06-28 00:23:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:23:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:23:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 00:23:42,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6390243902439025 [2024-06-28 00:23:42,110 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 913 flow. Second operand 5 states and 131 transitions. [2024-06-28 00:23:42,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 1255 flow [2024-06-28 00:23:42,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 116 transitions, 1176 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:23:42,127 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 946 flow [2024-06-28 00:23:42,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=946, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-06-28 00:23:42,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-28 00:23:42,127 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 946 flow [2024-06-28 00:23:42,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:42,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:42,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:42,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:23:42,128 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:42,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash -982460924, now seen corresponding path program 3 times [2024-06-28 00:23:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:42,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675621173] [2024-06-28 00:23:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:42,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:42,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675621173] [2024-06-28 00:23:42,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675621173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:42,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:42,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:42,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940062424] [2024-06-28 00:23:42,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:42,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:42,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:42,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:42,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:42,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 946 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:42,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:42,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:42,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:42,857 INFO L124 PetriNetUnfolderBase]: 638/1220 cut-off events. [2024-06-28 00:23:42,857 INFO L125 PetriNetUnfolderBase]: For 11043/11047 co-relation queries the response was YES. [2024-06-28 00:23:42,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5314 conditions, 1220 events. 638/1220 cut-off events. For 11043/11047 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7584 event pairs, 180 based on Foata normal form. 6/1206 useless extension candidates. Maximal degree in co-relation 5260. Up to 966 conditions per place. [2024-06-28 00:23:42,865 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 85 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-06-28 00:23:42,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 120 transitions, 1240 flow [2024-06-28 00:23:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 00:23:42,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027874564459931 [2024-06-28 00:23:42,866 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 946 flow. Second operand 7 states and 173 transitions. [2024-06-28 00:23:42,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 120 transitions, 1240 flow [2024-06-28 00:23:42,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 120 transitions, 1223 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 00:23:42,883 INFO L231 Difference]: Finished difference. Result has 116 places, 102 transitions, 1016 flow [2024-06-28 00:23:42,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1016, PETRI_PLACES=116, PETRI_TRANSITIONS=102} [2024-06-28 00:23:42,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2024-06-28 00:23:42,883 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 102 transitions, 1016 flow [2024-06-28 00:23:42,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:42,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:42,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:42,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:23:42,884 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:42,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash -75423814, now seen corresponding path program 2 times [2024-06-28 00:23:42,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:42,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161593505] [2024-06-28 00:23:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:42,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:43,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:43,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161593505] [2024-06-28 00:23:43,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161593505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:43,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:43,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:23:43,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563901358] [2024-06-28 00:23:43,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:43,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:23:43,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:43,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:23:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:23:43,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:43,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 102 transitions, 1016 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:43,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:43,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:43,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:43,663 INFO L124 PetriNetUnfolderBase]: 625/1192 cut-off events. [2024-06-28 00:23:43,663 INFO L125 PetriNetUnfolderBase]: For 11003/11007 co-relation queries the response was YES. [2024-06-28 00:23:43,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 1192 events. 625/1192 cut-off events. For 11003/11007 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7433 event pairs, 131 based on Foata normal form. 6/1177 useless extension candidates. Maximal degree in co-relation 5202. Up to 863 conditions per place. [2024-06-28 00:23:43,671 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 82 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-28 00:23:43,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 113 transitions, 1246 flow [2024-06-28 00:23:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:23:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:23:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-06-28 00:23:43,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2024-06-28 00:23:43,674 INFO L175 Difference]: Start difference. First operand has 116 places, 102 transitions, 1016 flow. Second operand 4 states and 107 transitions. [2024-06-28 00:23:43,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 113 transitions, 1246 flow [2024-06-28 00:23:43,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 113 transitions, 1173 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:23:43,695 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 1002 flow [2024-06-28 00:23:43,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1002, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-06-28 00:23:43,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-06-28 00:23:43,696 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 1002 flow [2024-06-28 00:23:43,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-06-28 00:23:43,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:43,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:43,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:23:43,696 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:43,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash -324780436, now seen corresponding path program 4 times [2024-06-28 00:23:43,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:43,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920120238] [2024-06-28 00:23:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:43,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920120238] [2024-06-28 00:23:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920120238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:44,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396114906] [2024-06-28 00:23:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:44,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:44,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:44,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:44,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:44,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 1002 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:44,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:44,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:44,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:44,371 INFO L124 PetriNetUnfolderBase]: 628/1214 cut-off events. [2024-06-28 00:23:44,371 INFO L125 PetriNetUnfolderBase]: For 11575/11579 co-relation queries the response was YES. [2024-06-28 00:23:44,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 1214 events. 628/1214 cut-off events. For 11575/11579 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7587 event pairs, 156 based on Foata normal form. 10/1204 useless extension candidates. Maximal degree in co-relation 5211. Up to 899 conditions per place. [2024-06-28 00:23:44,379 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 89 selfloop transitions, 28 changer transitions 0/128 dead transitions. [2024-06-28 00:23:44,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 128 transitions, 1360 flow [2024-06-28 00:23:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-28 00:23:44,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-06-28 00:23:44,381 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 1002 flow. Second operand 6 states and 162 transitions. [2024-06-28 00:23:44,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 128 transitions, 1360 flow [2024-06-28 00:23:44,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 128 transitions, 1297 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 00:23:44,401 INFO L231 Difference]: Finished difference. Result has 117 places, 103 transitions, 1030 flow [2024-06-28 00:23:44,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1030, PETRI_PLACES=117, PETRI_TRANSITIONS=103} [2024-06-28 00:23:44,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2024-06-28 00:23:44,401 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 103 transitions, 1030 flow [2024-06-28 00:23:44,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:44,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:44,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:44,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:23:44,402 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:44,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash -763321407, now seen corresponding path program 1 times [2024-06-28 00:23:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:44,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108866528] [2024-06-28 00:23:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:44,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:44,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108866528] [2024-06-28 00:23:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108866528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:44,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659464393] [2024-06-28 00:23:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:44,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:44,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:44,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:44,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:44,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:44,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 103 transitions, 1030 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:44,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:44,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:44,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:45,091 INFO L124 PetriNetUnfolderBase]: 689/1306 cut-off events. [2024-06-28 00:23:45,091 INFO L125 PetriNetUnfolderBase]: For 12891/12895 co-relation queries the response was YES. [2024-06-28 00:23:45,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5839 conditions, 1306 events. 689/1306 cut-off events. For 12891/12895 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8249 event pairs, 135 based on Foata normal form. 8/1293 useless extension candidates. Maximal degree in co-relation 5782. Up to 820 conditions per place. [2024-06-28 00:23:45,100 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 84 selfloop transitions, 35 changer transitions 0/130 dead transitions. [2024-06-28 00:23:45,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 130 transitions, 1448 flow [2024-06-28 00:23:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 00:23:45,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2024-06-28 00:23:45,101 INFO L175 Difference]: Start difference. First operand has 117 places, 103 transitions, 1030 flow. Second operand 6 states and 158 transitions. [2024-06-28 00:23:45,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 130 transitions, 1448 flow [2024-06-28 00:23:45,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 130 transitions, 1373 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 00:23:45,121 INFO L231 Difference]: Finished difference. Result has 119 places, 107 transitions, 1105 flow [2024-06-28 00:23:45,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1105, PETRI_PLACES=119, PETRI_TRANSITIONS=107} [2024-06-28 00:23:45,122 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2024-06-28 00:23:45,122 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 107 transitions, 1105 flow [2024-06-28 00:23:45,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:45,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:45,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:45,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:23:45,123 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:45,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:45,123 INFO L85 PathProgramCache]: Analyzing trace with hash -391511225, now seen corresponding path program 2 times [2024-06-28 00:23:45,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:45,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075596433] [2024-06-28 00:23:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:45,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:45,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075596433] [2024-06-28 00:23:45,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075596433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:45,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:45,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659172700] [2024-06-28 00:23:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:45,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:45,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:45,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:45,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:45,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 107 transitions, 1105 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:45,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:45,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:45,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:45,808 INFO L124 PetriNetUnfolderBase]: 717/1352 cut-off events. [2024-06-28 00:23:45,809 INFO L125 PetriNetUnfolderBase]: For 14208/14212 co-relation queries the response was YES. [2024-06-28 00:23:45,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6151 conditions, 1352 events. 717/1352 cut-off events. For 14208/14212 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8595 event pairs, 137 based on Foata normal form. 8/1339 useless extension candidates. Maximal degree in co-relation 6093. Up to 966 conditions per place. [2024-06-28 00:23:45,817 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 91 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-28 00:23:45,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 128 transitions, 1436 flow [2024-06-28 00:23:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:45,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 00:23:45,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-06-28 00:23:45,819 INFO L175 Difference]: Start difference. First operand has 119 places, 107 transitions, 1105 flow. Second operand 6 states and 153 transitions. [2024-06-28 00:23:45,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 128 transitions, 1436 flow [2024-06-28 00:23:45,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 128 transitions, 1384 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 00:23:45,847 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1156 flow [2024-06-28 00:23:45,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1156, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-28 00:23:45,847 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-28 00:23:45,847 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1156 flow [2024-06-28 00:23:45,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:45,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:45,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:45,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:23:45,848 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:45,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:45,848 INFO L85 PathProgramCache]: Analyzing trace with hash 575916423, now seen corresponding path program 3 times [2024-06-28 00:23:45,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:45,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15427697] [2024-06-28 00:23:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:45,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:46,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:46,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15427697] [2024-06-28 00:23:46,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15427697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:46,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:46,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:46,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916032949] [2024-06-28 00:23:46,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:46,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:46,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:46,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:46,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:46,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1156 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:46,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:46,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:46,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:46,504 INFO L124 PetriNetUnfolderBase]: 699/1324 cut-off events. [2024-06-28 00:23:46,505 INFO L125 PetriNetUnfolderBase]: For 12032/12036 co-relation queries the response was YES. [2024-06-28 00:23:46,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5912 conditions, 1324 events. 699/1324 cut-off events. For 12032/12036 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8414 event pairs, 138 based on Foata normal form. 8/1311 useless extension candidates. Maximal degree in co-relation 5853. Up to 941 conditions per place. [2024-06-28 00:23:46,514 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 91 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-28 00:23:46,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 128 transitions, 1451 flow [2024-06-28 00:23:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:23:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:23:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-28 00:23:46,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6536585365853659 [2024-06-28 00:23:46,515 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1156 flow. Second operand 5 states and 134 transitions. [2024-06-28 00:23:46,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 128 transitions, 1451 flow [2024-06-28 00:23:46,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 128 transitions, 1376 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:23:46,539 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1149 flow [2024-06-28 00:23:46,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1149, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-28 00:23:46,539 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-28 00:23:46,540 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1149 flow [2024-06-28 00:23:46,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:46,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:46,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:46,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:23:46,541 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:46,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:46,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1053578373, now seen corresponding path program 4 times [2024-06-28 00:23:46,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:46,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114972682] [2024-06-28 00:23:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:46,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:46,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:46,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114972682] [2024-06-28 00:23:46,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114972682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:46,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:46,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190473937] [2024-06-28 00:23:46,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:46,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:46,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:46,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:46,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:46,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:46,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1149 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:46,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:46,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:46,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:47,202 INFO L124 PetriNetUnfolderBase]: 690/1318 cut-off events. [2024-06-28 00:23:47,202 INFO L125 PetriNetUnfolderBase]: For 10105/10109 co-relation queries the response was YES. [2024-06-28 00:23:47,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5791 conditions, 1318 events. 690/1318 cut-off events. For 10105/10109 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8311 event pairs, 201 based on Foata normal form. 2/1300 useless extension candidates. Maximal degree in co-relation 5732. Up to 1062 conditions per place. [2024-06-28 00:23:47,212 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 91 selfloop transitions, 24 changer transitions 0/126 dead transitions. [2024-06-28 00:23:47,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 1421 flow [2024-06-28 00:23:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:23:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:23:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-06-28 00:23:47,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-06-28 00:23:47,213 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1149 flow. Second operand 5 states and 135 transitions. [2024-06-28 00:23:47,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 1421 flow [2024-06-28 00:23:47,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 126 transitions, 1344 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 00:23:47,234 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1133 flow [2024-06-28 00:23:47,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1133, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-28 00:23:47,235 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-28 00:23:47,235 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1133 flow [2024-06-28 00:23:47,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:47,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:47,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:47,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:23:47,236 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:47,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:47,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1382154755, now seen corresponding path program 1 times [2024-06-28 00:23:47,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:47,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069476095] [2024-06-28 00:23:47,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:47,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:47,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:47,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069476095] [2024-06-28 00:23:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069476095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:47,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:47,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:23:47,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598438008] [2024-06-28 00:23:47,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:47,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:23:47,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:47,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:23:47,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:23:47,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:47,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1133 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:23:47,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:47,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:47,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:48,178 INFO L124 PetriNetUnfolderBase]: 702/1350 cut-off events. [2024-06-28 00:23:48,179 INFO L125 PetriNetUnfolderBase]: For 10808/10812 co-relation queries the response was YES. [2024-06-28 00:23:48,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1350 events. 702/1350 cut-off events. For 10808/10812 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8608 event pairs, 175 based on Foata normal form. 4/1334 useless extension candidates. Maximal degree in co-relation 5784. Up to 879 conditions per place. [2024-06-28 00:23:48,187 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 84 selfloop transitions, 47 changer transitions 0/142 dead transitions. [2024-06-28 00:23:48,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 142 transitions, 1576 flow [2024-06-28 00:23:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 00:23:48,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376306620209059 [2024-06-28 00:23:48,188 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1133 flow. Second operand 7 states and 183 transitions. [2024-06-28 00:23:48,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 142 transitions, 1576 flow [2024-06-28 00:23:48,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 142 transitions, 1520 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:23:48,207 INFO L231 Difference]: Finished difference. Result has 127 places, 115 transitions, 1300 flow [2024-06-28 00:23:48,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1300, PETRI_PLACES=127, PETRI_TRANSITIONS=115} [2024-06-28 00:23:48,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-28 00:23:48,208 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 115 transitions, 1300 flow [2024-06-28 00:23:48,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:23:48,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:48,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:23:48,208 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:48,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1468996295, now seen corresponding path program 2 times [2024-06-28 00:23:48,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:48,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313264001] [2024-06-28 00:23:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313264001] [2024-06-28 00:23:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313264001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:48,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:23:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428969476] [2024-06-28 00:23:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:23:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:23:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:23:48,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:23:48,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 115 transitions, 1300 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) [2024-06-28 00:23:48,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:48,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:23:48,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:49,214 INFO L124 PetriNetUnfolderBase]: 742/1427 cut-off events. [2024-06-28 00:23:49,214 INFO L125 PetriNetUnfolderBase]: For 14760/14764 co-relation queries the response was YES. [2024-06-28 00:23:49,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 1427 events. 742/1427 cut-off events. For 14760/14764 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 9291 event pairs, 133 based on Foata normal form. 16/1422 useless extension candidates. Maximal degree in co-relation 6327. Up to 805 conditions per place. [2024-06-28 00:23:49,225 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 84 selfloop transitions, 44 changer transitions 6/144 dead transitions. [2024-06-28 00:23:49,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 144 transitions, 1686 flow [2024-06-28 00:23:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:23:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:23:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 00:23:49,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5792682926829268 [2024-06-28 00:23:49,226 INFO L175 Difference]: Start difference. First operand has 127 places, 115 transitions, 1300 flow. Second operand 8 states and 190 transitions. [2024-06-28 00:23:49,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 144 transitions, 1686 flow [2024-06-28 00:23:49,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 144 transitions, 1595 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 00:23:49,254 INFO L231 Difference]: Finished difference. Result has 132 places, 114 transitions, 1310 flow [2024-06-28 00:23:49,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1310, PETRI_PLACES=132, PETRI_TRANSITIONS=114} [2024-06-28 00:23:49,254 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-06-28 00:23:49,255 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 114 transitions, 1310 flow [2024-06-28 00:23:49,255 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) [2024-06-28 00:23:49,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:49,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:49,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:23:49,255 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:49,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:49,256 INFO L85 PathProgramCache]: Analyzing trace with hash 748055269, now seen corresponding path program 3 times [2024-06-28 00:23:49,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:49,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693607080] [2024-06-28 00:23:49,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:49,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:49,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:49,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693607080] [2024-06-28 00:23:49,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693607080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:49,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:49,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:23:49,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556260367] [2024-06-28 00:23:49,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:49,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:23:49,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:49,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:23:49,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:23:50,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:23:50,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 114 transitions, 1310 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) [2024-06-28 00:23:50,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:50,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:23:50,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:50,370 INFO L124 PetriNetUnfolderBase]: 730/1407 cut-off events. [2024-06-28 00:23:50,370 INFO L125 PetriNetUnfolderBase]: For 14160/14164 co-relation queries the response was YES. [2024-06-28 00:23:50,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6204 conditions, 1407 events. 730/1407 cut-off events. For 14160/14164 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 9181 event pairs, 139 based on Foata normal form. 16/1402 useless extension candidates. Maximal degree in co-relation 6140. Up to 899 conditions per place. [2024-06-28 00:23:50,380 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 91 selfloop transitions, 29 changer transitions 10/140 dead transitions. [2024-06-28 00:23:50,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 140 transitions, 1670 flow [2024-06-28 00:23:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:23:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:23:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 00:23:50,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670731707317073 [2024-06-28 00:23:50,382 INFO L175 Difference]: Start difference. First operand has 132 places, 114 transitions, 1310 flow. Second operand 8 states and 186 transitions. [2024-06-28 00:23:50,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 140 transitions, 1670 flow [2024-06-28 00:23:50,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 140 transitions, 1573 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:23:50,405 INFO L231 Difference]: Finished difference. Result has 134 places, 111 transitions, 1252 flow [2024-06-28 00:23:50,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1252, PETRI_PLACES=134, PETRI_TRANSITIONS=111} [2024-06-28 00:23:50,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2024-06-28 00:23:50,406 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 111 transitions, 1252 flow [2024-06-28 00:23:50,406 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) [2024-06-28 00:23:50,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:50,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:50,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:23:50,406 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:50,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:50,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1424375915, now seen corresponding path program 4 times [2024-06-28 00:23:50,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:50,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105385312] [2024-06-28 00:23:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:50,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:50,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105385312] [2024-06-28 00:23:50,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105385312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:50,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:50,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:23:50,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183147986] [2024-06-28 00:23:50,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:51,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:23:51,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:51,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:23:51,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:23:51,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:23:51,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 111 transitions, 1252 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) [2024-06-28 00:23:51,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:51,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:23:51,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:51,355 INFO L124 PetriNetUnfolderBase]: 678/1320 cut-off events. [2024-06-28 00:23:51,355 INFO L125 PetriNetUnfolderBase]: For 12396/12400 co-relation queries the response was YES. [2024-06-28 00:23:51,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5652 conditions, 1320 events. 678/1320 cut-off events. For 12396/12400 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8542 event pairs, 130 based on Foata normal form. 16/1318 useless extension candidates. Maximal degree in co-relation 5587. Up to 884 conditions per place. [2024-06-28 00:23:51,363 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 92 selfloop transitions, 20 changer transitions 10/132 dead transitions. [2024-06-28 00:23:51,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 132 transitions, 1569 flow [2024-06-28 00:23:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:23:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:23:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 00:23:51,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487804878048781 [2024-06-28 00:23:51,364 INFO L175 Difference]: Start difference. First operand has 134 places, 111 transitions, 1252 flow. Second operand 8 states and 180 transitions. [2024-06-28 00:23:51,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 132 transitions, 1569 flow [2024-06-28 00:23:51,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 132 transitions, 1500 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:23:51,384 INFO L231 Difference]: Finished difference. Result has 136 places, 107 transitions, 1173 flow [2024-06-28 00:23:51,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1173, PETRI_PLACES=136, PETRI_TRANSITIONS=107} [2024-06-28 00:23:51,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-28 00:23:51,385 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 107 transitions, 1173 flow [2024-06-28 00:23:51,385 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) [2024-06-28 00:23:51,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:51,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:51,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:23:51,386 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:51,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1156954466, now seen corresponding path program 1 times [2024-06-28 00:23:51,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:51,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058163] [2024-06-28 00:23:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:51,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:51,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058163] [2024-06-28 00:23:51,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:51,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:51,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:51,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407128529] [2024-06-28 00:23:51,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:51,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:51,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:51,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:51,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:51,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 107 transitions, 1173 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:51,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:51,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:51,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:52,161 INFO L124 PetriNetUnfolderBase]: 627/1211 cut-off events. [2024-06-28 00:23:52,161 INFO L125 PetriNetUnfolderBase]: For 9589/9593 co-relation queries the response was YES. [2024-06-28 00:23:52,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 1211 events. 627/1211 cut-off events. For 9589/9593 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7645 event pairs, 111 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 5203. Up to 789 conditions per place. [2024-06-28 00:23:52,169 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 90 selfloop transitions, 36 changer transitions 0/137 dead transitions. [2024-06-28 00:23:52,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 137 transitions, 1643 flow [2024-06-28 00:23:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:52,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 00:23:52,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627177700348432 [2024-06-28 00:23:52,170 INFO L175 Difference]: Start difference. First operand has 136 places, 107 transitions, 1173 flow. Second operand 7 states and 180 transitions. [2024-06-28 00:23:52,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 137 transitions, 1643 flow [2024-06-28 00:23:52,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 137 transitions, 1428 flow, removed 13 selfloop flow, removed 17 redundant places. [2024-06-28 00:23:52,189 INFO L231 Difference]: Finished difference. Result has 126 places, 113 transitions, 1117 flow [2024-06-28 00:23:52,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1117, PETRI_PLACES=126, PETRI_TRANSITIONS=113} [2024-06-28 00:23:52,190 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2024-06-28 00:23:52,190 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 113 transitions, 1117 flow [2024-06-28 00:23:52,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:52,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:52,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:52,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:23:52,190 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:52,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1668842536, now seen corresponding path program 2 times [2024-06-28 00:23:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596175797] [2024-06-28 00:23:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:52,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596175797] [2024-06-28 00:23:52,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596175797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:52,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:52,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:52,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673978890] [2024-06-28 00:23:52,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:52,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:52,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:52,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:52,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:52,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:52,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 113 transitions, 1117 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:52,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:52,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:52,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:52,953 INFO L124 PetriNetUnfolderBase]: 635/1214 cut-off events. [2024-06-28 00:23:52,953 INFO L125 PetriNetUnfolderBase]: For 9278/9282 co-relation queries the response was YES. [2024-06-28 00:23:52,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5133 conditions, 1214 events. 635/1214 cut-off events. For 9278/9282 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7537 event pairs, 124 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 5077. Up to 797 conditions per place. [2024-06-28 00:23:52,960 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 91 selfloop transitions, 37 changer transitions 0/139 dead transitions. [2024-06-28 00:23:52,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 139 transitions, 1547 flow [2024-06-28 00:23:52,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:52,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 00:23:52,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306620209059234 [2024-06-28 00:23:52,962 INFO L175 Difference]: Start difference. First operand has 126 places, 113 transitions, 1117 flow. Second operand 7 states and 181 transitions. [2024-06-28 00:23:52,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 139 transitions, 1547 flow [2024-06-28 00:23:52,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 139 transitions, 1471 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 00:23:52,983 INFO L231 Difference]: Finished difference. Result has 130 places, 115 transitions, 1150 flow [2024-06-28 00:23:52,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1150, PETRI_PLACES=130, PETRI_TRANSITIONS=115} [2024-06-28 00:23:52,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-28 00:23:52,984 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 115 transitions, 1150 flow [2024-06-28 00:23:52,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:52,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:52,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:52,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:23:52,985 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:52,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1254976772, now seen corresponding path program 3 times [2024-06-28 00:23:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:52,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829418346] [2024-06-28 00:23:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:52,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:53,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:53,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829418346] [2024-06-28 00:23:53,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829418346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:53,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:53,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:53,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938685150] [2024-06-28 00:23:53,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:53,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:53,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:53,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:53,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:53,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:53,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 115 transitions, 1150 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:53,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:53,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:53,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:53,769 INFO L124 PetriNetUnfolderBase]: 651/1254 cut-off events. [2024-06-28 00:23:53,770 INFO L125 PetriNetUnfolderBase]: For 9851/9855 co-relation queries the response was YES. [2024-06-28 00:23:53,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5284 conditions, 1254 events. 651/1254 cut-off events. For 9851/9855 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7915 event pairs, 133 based on Foata normal form. 2/1239 useless extension candidates. Maximal degree in co-relation 5227. Up to 931 conditions per place. [2024-06-28 00:23:53,777 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 104 selfloop transitions, 23 changer transitions 0/138 dead transitions. [2024-06-28 00:23:53,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 138 transitions, 1494 flow [2024-06-28 00:23:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 00:23:53,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027874564459931 [2024-06-28 00:23:53,778 INFO L175 Difference]: Start difference. First operand has 130 places, 115 transitions, 1150 flow. Second operand 7 states and 173 transitions. [2024-06-28 00:23:53,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 138 transitions, 1494 flow [2024-06-28 00:23:53,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 138 transitions, 1360 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 00:23:53,797 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 1117 flow [2024-06-28 00:23:53,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1117, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2024-06-28 00:23:53,798 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-06-28 00:23:53,798 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 1117 flow [2024-06-28 00:23:53,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:53,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:53,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:53,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:23:53,799 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:53,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:53,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1720061340, now seen corresponding path program 4 times [2024-06-28 00:23:53,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:53,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270366054] [2024-06-28 00:23:53,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:53,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:54,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:54,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270366054] [2024-06-28 00:23:54,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270366054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:54,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:54,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:54,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143617734] [2024-06-28 00:23:54,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:54,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:54,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:54,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:54,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:54,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:54,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 1117 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:54,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:54,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:54,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:54,531 INFO L124 PetriNetUnfolderBase]: 659/1270 cut-off events. [2024-06-28 00:23:54,532 INFO L125 PetriNetUnfolderBase]: For 9897/9901 co-relation queries the response was YES. [2024-06-28 00:23:54,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 1270 events. 659/1270 cut-off events. For 9897/9901 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8095 event pairs, 108 based on Foata normal form. 2/1260 useless extension candidates. Maximal degree in co-relation 5143. Up to 817 conditions per place. [2024-06-28 00:23:54,540 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 87 selfloop transitions, 43 changer transitions 0/141 dead transitions. [2024-06-28 00:23:54,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 141 transitions, 1487 flow [2024-06-28 00:23:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 00:23:54,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132404181184669 [2024-06-28 00:23:54,541 INFO L175 Difference]: Start difference. First operand has 132 places, 119 transitions, 1117 flow. Second operand 7 states and 176 transitions. [2024-06-28 00:23:54,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 141 transitions, 1487 flow [2024-06-28 00:23:54,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 141 transitions, 1436 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:23:54,565 INFO L231 Difference]: Finished difference. Result has 135 places, 121 transitions, 1173 flow [2024-06-28 00:23:54,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1173, PETRI_PLACES=135, PETRI_TRANSITIONS=121} [2024-06-28 00:23:54,565 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-28 00:23:54,566 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 121 transitions, 1173 flow [2024-06-28 00:23:54,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:54,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:54,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:54,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:23:54,566 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:54,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1700570630, now seen corresponding path program 5 times [2024-06-28 00:23:54,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:54,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040041493] [2024-06-28 00:23:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:54,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:54,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:54,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040041493] [2024-06-28 00:23:54,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040041493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:54,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:54,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536310409] [2024-06-28 00:23:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:54,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:55,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:55,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 121 transitions, 1173 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:55,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:55,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:55,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:55,276 INFO L124 PetriNetUnfolderBase]: 688/1323 cut-off events. [2024-06-28 00:23:55,277 INFO L125 PetriNetUnfolderBase]: For 11403/11407 co-relation queries the response was YES. [2024-06-28 00:23:55,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5582 conditions, 1323 events. 688/1323 cut-off events. For 11403/11407 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8500 event pairs, 116 based on Foata normal form. 2/1308 useless extension candidates. Maximal degree in co-relation 5523. Up to 962 conditions per place. [2024-06-28 00:23:55,285 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 103 selfloop transitions, 30 changer transitions 0/144 dead transitions. [2024-06-28 00:23:55,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 144 transitions, 1587 flow [2024-06-28 00:23:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 00:23:55,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993031358885017 [2024-06-28 00:23:55,286 INFO L175 Difference]: Start difference. First operand has 135 places, 121 transitions, 1173 flow. Second operand 7 states and 172 transitions. [2024-06-28 00:23:55,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 144 transitions, 1587 flow [2024-06-28 00:23:55,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 144 transitions, 1513 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:23:55,311 INFO L231 Difference]: Finished difference. Result has 139 places, 127 transitions, 1242 flow [2024-06-28 00:23:55,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1242, PETRI_PLACES=139, PETRI_TRANSITIONS=127} [2024-06-28 00:23:55,311 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-06-28 00:23:55,311 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 127 transitions, 1242 flow [2024-06-28 00:23:55,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:55,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:55,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:55,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:23:55,312 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:55,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash -782042180, now seen corresponding path program 6 times [2024-06-28 00:23:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902956427] [2024-06-28 00:23:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:55,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902956427] [2024-06-28 00:23:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902956427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:55,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:55,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555342518] [2024-06-28 00:23:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:55,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:55,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:55,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:55,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:55,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:55,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 127 transitions, 1242 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:55,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:55,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:55,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:56,128 INFO L124 PetriNetUnfolderBase]: 683/1316 cut-off events. [2024-06-28 00:23:56,129 INFO L125 PetriNetUnfolderBase]: For 11572/11576 co-relation queries the response was YES. [2024-06-28 00:23:56,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5510 conditions, 1316 events. 683/1316 cut-off events. For 11572/11576 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8401 event pairs, 116 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 5449. Up to 958 conditions per place. [2024-06-28 00:23:56,138 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 105 selfloop transitions, 31 changer transitions 0/147 dead transitions. [2024-06-28 00:23:56,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 147 transitions, 1558 flow [2024-06-28 00:23:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:23:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:23:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 00:23:56,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772357723577236 [2024-06-28 00:23:56,140 INFO L175 Difference]: Start difference. First operand has 139 places, 127 transitions, 1242 flow. Second operand 9 states and 213 transitions. [2024-06-28 00:23:56,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 147 transitions, 1558 flow [2024-06-28 00:23:56,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 147 transitions, 1513 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 00:23:56,168 INFO L231 Difference]: Finished difference. Result has 146 places, 127 transitions, 1264 flow [2024-06-28 00:23:56,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1264, PETRI_PLACES=146, PETRI_TRANSITIONS=127} [2024-06-28 00:23:56,170 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2024-06-28 00:23:56,170 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 127 transitions, 1264 flow [2024-06-28 00:23:56,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:56,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:56,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:56,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:23:56,170 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:56,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:56,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1019184286, now seen corresponding path program 7 times [2024-06-28 00:23:56,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:56,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356170709] [2024-06-28 00:23:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:56,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:56,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:56,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356170709] [2024-06-28 00:23:56,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356170709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:56,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:56,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:56,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107971444] [2024-06-28 00:23:56,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:56,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:56,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:56,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:56,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:56,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 127 transitions, 1264 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:56,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:56,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:56,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:56,939 INFO L124 PetriNetUnfolderBase]: 678/1300 cut-off events. [2024-06-28 00:23:56,939 INFO L125 PetriNetUnfolderBase]: For 11478/11482 co-relation queries the response was YES. [2024-06-28 00:23:56,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 1300 events. 678/1300 cut-off events. For 11478/11482 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8284 event pairs, 112 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 5389. Up to 900 conditions per place. [2024-06-28 00:23:56,946 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 107 selfloop transitions, 30 changer transitions 0/148 dead transitions. [2024-06-28 00:23:56,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 148 transitions, 1642 flow [2024-06-28 00:23:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 00:23:56,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2024-06-28 00:23:56,947 INFO L175 Difference]: Start difference. First operand has 146 places, 127 transitions, 1264 flow. Second operand 6 states and 158 transitions. [2024-06-28 00:23:56,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 148 transitions, 1642 flow [2024-06-28 00:23:56,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 148 transitions, 1558 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:23:56,975 INFO L231 Difference]: Finished difference. Result has 144 places, 127 transitions, 1248 flow [2024-06-28 00:23:56,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1248, PETRI_PLACES=144, PETRI_TRANSITIONS=127} [2024-06-28 00:23:56,976 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2024-06-28 00:23:56,976 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 127 transitions, 1248 flow [2024-06-28 00:23:56,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:56,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:56,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:56,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:23:56,977 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:56,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:56,977 INFO L85 PathProgramCache]: Analyzing trace with hash 762476386, now seen corresponding path program 8 times [2024-06-28 00:23:56,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:56,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309072129] [2024-06-28 00:23:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:56,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:57,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309072129] [2024-06-28 00:23:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309072129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:57,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:57,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:23:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930109303] [2024-06-28 00:23:57,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:57,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:23:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:57,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:23:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:23:57,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:23:57,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 127 transitions, 1248 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:57,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:57,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:23:57,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:57,720 INFO L124 PetriNetUnfolderBase]: 673/1284 cut-off events. [2024-06-28 00:23:57,720 INFO L125 PetriNetUnfolderBase]: For 11293/11297 co-relation queries the response was YES. [2024-06-28 00:23:57,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 1284 events. 673/1284 cut-off events. For 11293/11297 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8060 event pairs, 125 based on Foata normal form. 2/1273 useless extension candidates. Maximal degree in co-relation 5324. Up to 896 conditions per place. [2024-06-28 00:23:57,728 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 107 selfloop transitions, 29 changer transitions 0/147 dead transitions. [2024-06-28 00:23:57,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 147 transitions, 1568 flow [2024-06-28 00:23:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:23:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:23:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 00:23:57,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2024-06-28 00:23:57,730 INFO L175 Difference]: Start difference. First operand has 144 places, 127 transitions, 1248 flow. Second operand 6 states and 158 transitions. [2024-06-28 00:23:57,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 147 transitions, 1568 flow [2024-06-28 00:23:57,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 147 transitions, 1456 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:23:57,761 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 1202 flow [2024-06-28 00:23:57,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1202, PETRI_PLACES=143, PETRI_TRANSITIONS=127} [2024-06-28 00:23:57,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-28 00:23:57,762 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 1202 flow [2024-06-28 00:23:57,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:57,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:57,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:57,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:23:57,763 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:57,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash 541648262, now seen corresponding path program 1 times [2024-06-28 00:23:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:57,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953738212] [2024-06-28 00:23:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:58,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:58,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953738212] [2024-06-28 00:23:58,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953738212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:58,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:58,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:58,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223252120] [2024-06-28 00:23:58,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:58,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:58,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:58,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:58,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 00:23:58,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 127 transitions, 1202 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) [2024-06-28 00:23:58,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:58,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 00:23:58,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:58,739 INFO L124 PetriNetUnfolderBase]: 773/1528 cut-off events. [2024-06-28 00:23:58,739 INFO L125 PetriNetUnfolderBase]: For 20006/20010 co-relation queries the response was YES. [2024-06-28 00:23:58,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6249 conditions, 1528 events. 773/1528 cut-off events. For 20006/20010 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10094 event pairs, 160 based on Foata normal form. 12/1518 useless extension candidates. Maximal degree in co-relation 6186. Up to 941 conditions per place. [2024-06-28 00:23:58,749 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 130 selfloop transitions, 12 changer transitions 18/170 dead transitions. [2024-06-28 00:23:58,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 170 transitions, 1769 flow [2024-06-28 00:23:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:23:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:23:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-06-28 00:23:58,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439024390243903 [2024-06-28 00:23:58,750 INFO L175 Difference]: Start difference. First operand has 143 places, 127 transitions, 1202 flow. Second operand 10 states and 223 transitions. [2024-06-28 00:23:58,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 170 transitions, 1769 flow [2024-06-28 00:23:58,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 170 transitions, 1692 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:23:58,787 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1158 flow [2024-06-28 00:23:58,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1158, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-06-28 00:23:58,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-28 00:23:58,788 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1158 flow [2024-06-28 00:23:58,788 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) [2024-06-28 00:23:58,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:58,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:58,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:23:58,789 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:58,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash 249581576, now seen corresponding path program 1 times [2024-06-28 00:23:58,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:58,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626625661] [2024-06-28 00:23:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:58,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:59,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626625661] [2024-06-28 00:23:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626625661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:59,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:23:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187453299] [2024-06-28 00:23:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:59,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:23:59,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:23:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:23:59,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:23:59,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1158 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) [2024-06-28 00:23:59,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:59,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:23:59,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:59,771 INFO L124 PetriNetUnfolderBase]: 717/1400 cut-off events. [2024-06-28 00:23:59,772 INFO L125 PetriNetUnfolderBase]: For 18438/18442 co-relation queries the response was YES. [2024-06-28 00:23:59,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 1400 events. 717/1400 cut-off events. For 18438/18442 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9053 event pairs, 199 based on Foata normal form. 4/1382 useless extension candidates. Maximal degree in co-relation 5826. Up to 1004 conditions per place. [2024-06-28 00:23:59,781 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 115 selfloop transitions, 23 changer transitions 0/148 dead transitions. [2024-06-28 00:23:59,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 148 transitions, 1552 flow [2024-06-28 00:23:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:23:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:23:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 00:23:59,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578397212543554 [2024-06-28 00:23:59,782 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1158 flow. Second operand 7 states and 166 transitions. [2024-06-28 00:23:59,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 148 transitions, 1552 flow [2024-06-28 00:23:59,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 148 transitions, 1495 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 00:23:59,815 INFO L231 Difference]: Finished difference. Result has 147 places, 128 transitions, 1176 flow [2024-06-28 00:23:59,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1176, PETRI_PLACES=147, PETRI_TRANSITIONS=128} [2024-06-28 00:23:59,816 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 00:23:59,816 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 128 transitions, 1176 flow [2024-06-28 00:23:59,816 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) [2024-06-28 00:23:59,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:59,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:59,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:23:59,816 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:59,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:59,817 INFO L85 PathProgramCache]: Analyzing trace with hash 245766344, now seen corresponding path program 2 times [2024-06-28 00:23:59,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:59,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443298280] [2024-06-28 00:23:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:59,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443298280] [2024-06-28 00:24:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443298280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:00,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:00,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:00,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99532879] [2024-06-28 00:24:00,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:00,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:00,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:00,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:00,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:00,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:00,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 128 transitions, 1176 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:00,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:00,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:00,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:00,752 INFO L124 PetriNetUnfolderBase]: 793/1562 cut-off events. [2024-06-28 00:24:00,753 INFO L125 PetriNetUnfolderBase]: For 23060/23064 co-relation queries the response was YES. [2024-06-28 00:24:00,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6492 conditions, 1562 events. 793/1562 cut-off events. For 23060/23064 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10466 event pairs, 191 based on Foata normal form. 12/1557 useless extension candidates. Maximal degree in co-relation 6428. Up to 881 conditions per place. [2024-06-28 00:24:00,761 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 95 selfloop transitions, 45 changer transitions 10/161 dead transitions. [2024-06-28 00:24:00,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 161 transitions, 1624 flow [2024-06-28 00:24:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 00:24:00,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6280487804878049 [2024-06-28 00:24:00,763 INFO L175 Difference]: Start difference. First operand has 147 places, 128 transitions, 1176 flow. Second operand 8 states and 206 transitions. [2024-06-28 00:24:00,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 161 transitions, 1624 flow [2024-06-28 00:24:00,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 161 transitions, 1574 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 00:24:00,806 INFO L231 Difference]: Finished difference. Result has 151 places, 126 transitions, 1209 flow [2024-06-28 00:24:00,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1209, PETRI_PLACES=151, PETRI_TRANSITIONS=126} [2024-06-28 00:24:00,807 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 109 predicate places. [2024-06-28 00:24:00,807 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 126 transitions, 1209 flow [2024-06-28 00:24:00,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:00,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:00,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:00,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:24:00,807 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:00,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2119997640, now seen corresponding path program 3 times [2024-06-28 00:24:00,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:00,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170852310] [2024-06-28 00:24:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:00,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:01,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:01,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170852310] [2024-06-28 00:24:01,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170852310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:01,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:01,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:01,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108576482] [2024-06-28 00:24:01,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:01,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:01,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:01,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:01,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 126 transitions, 1209 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:01,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:01,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:01,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:01,804 INFO L124 PetriNetUnfolderBase]: 855/1687 cut-off events. [2024-06-28 00:24:01,805 INFO L125 PetriNetUnfolderBase]: For 33571/33575 co-relation queries the response was YES. [2024-06-28 00:24:01,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7538 conditions, 1687 events. 855/1687 cut-off events. For 33571/33575 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11686 event pairs, 171 based on Foata normal form. 12/1681 useless extension candidates. Maximal degree in co-relation 7474. Up to 454 conditions per place. [2024-06-28 00:24:01,817 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 87 selfloop transitions, 58 changer transitions 10/166 dead transitions. [2024-06-28 00:24:01,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 166 transitions, 1853 flow [2024-06-28 00:24:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 00:24:01,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 00:24:01,818 INFO L175 Difference]: Start difference. First operand has 151 places, 126 transitions, 1209 flow. Second operand 8 states and 208 transitions. [2024-06-28 00:24:01,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 166 transitions, 1853 flow [2024-06-28 00:24:01,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 166 transitions, 1747 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:01,877 INFO L231 Difference]: Finished difference. Result has 151 places, 125 transitions, 1279 flow [2024-06-28 00:24:01,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1279, PETRI_PLACES=151, PETRI_TRANSITIONS=125} [2024-06-28 00:24:01,880 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 109 predicate places. [2024-06-28 00:24:01,880 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 125 transitions, 1279 flow [2024-06-28 00:24:01,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:01,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:01,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:01,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:24:01,884 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:01,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1902299606, now seen corresponding path program 4 times [2024-06-28 00:24:01,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:01,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020972135] [2024-06-28 00:24:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:01,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:02,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:02,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020972135] [2024-06-28 00:24:02,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020972135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:02,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:02,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:02,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667144948] [2024-06-28 00:24:02,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:02,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:02,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:02,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:02,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:02,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 125 transitions, 1279 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:02,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:02,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:02,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:02,856 INFO L124 PetriNetUnfolderBase]: 869/1709 cut-off events. [2024-06-28 00:24:02,857 INFO L125 PetriNetUnfolderBase]: For 36087/36091 co-relation queries the response was YES. [2024-06-28 00:24:02,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8088 conditions, 1709 events. 869/1709 cut-off events. For 36087/36091 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11924 event pairs, 195 based on Foata normal form. 12/1703 useless extension candidates. Maximal degree in co-relation 8024. Up to 550 conditions per place. [2024-06-28 00:24:02,869 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 91 selfloop transitions, 49 changer transitions 10/161 dead transitions. [2024-06-28 00:24:02,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 161 transitions, 1881 flow [2024-06-28 00:24:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 00:24:02,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 00:24:02,871 INFO L175 Difference]: Start difference. First operand has 151 places, 125 transitions, 1279 flow. Second operand 8 states and 205 transitions. [2024-06-28 00:24:02,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 161 transitions, 1881 flow [2024-06-28 00:24:02,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 161 transitions, 1791 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:24:02,921 INFO L231 Difference]: Finished difference. Result has 151 places, 120 transitions, 1257 flow [2024-06-28 00:24:02,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1257, PETRI_PLACES=151, PETRI_TRANSITIONS=120} [2024-06-28 00:24:02,922 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 109 predicate places. [2024-06-28 00:24:02,922 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 120 transitions, 1257 flow [2024-06-28 00:24:02,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:02,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:02,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:02,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:24:02,923 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:02,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:02,923 INFO L85 PathProgramCache]: Analyzing trace with hash 245856554, now seen corresponding path program 5 times [2024-06-28 00:24:02,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:02,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607442325] [2024-06-28 00:24:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:02,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607442325] [2024-06-28 00:24:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607442325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:03,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:03,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699253335] [2024-06-28 00:24:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:03,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:03,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:03,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:03,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:03,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 120 transitions, 1257 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) [2024-06-28 00:24:03,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:03,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:03,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:04,105 INFO L124 PetriNetUnfolderBase]: 837/1647 cut-off events. [2024-06-28 00:24:04,105 INFO L125 PetriNetUnfolderBase]: For 33570/33574 co-relation queries the response was YES. [2024-06-28 00:24:04,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 1647 events. 837/1647 cut-off events. For 33570/33574 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11381 event pairs, 261 based on Foata normal form. 12/1636 useless extension candidates. Maximal degree in co-relation 7758. Up to 1121 conditions per place. [2024-06-28 00:24:04,117 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 85 selfloop transitions, 45 changer transitions 6/146 dead transitions. [2024-06-28 00:24:04,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 146 transitions, 1597 flow [2024-06-28 00:24:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 00:24:04,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5663956639566395 [2024-06-28 00:24:04,118 INFO L175 Difference]: Start difference. First operand has 151 places, 120 transitions, 1257 flow. Second operand 9 states and 209 transitions. [2024-06-28 00:24:04,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 146 transitions, 1597 flow [2024-06-28 00:24:04,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 146 transitions, 1494 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:24:04,164 INFO L231 Difference]: Finished difference. Result has 148 places, 119 transitions, 1238 flow [2024-06-28 00:24:04,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1238, PETRI_PLACES=148, PETRI_TRANSITIONS=119} [2024-06-28 00:24:04,164 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-06-28 00:24:04,164 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 119 transitions, 1238 flow [2024-06-28 00:24:04,165 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) [2024-06-28 00:24:04,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:04,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:04,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:24:04,165 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:04,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash 198231490, now seen corresponding path program 6 times [2024-06-28 00:24:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:04,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920668810] [2024-06-28 00:24:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:04,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:04,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920668810] [2024-06-28 00:24:04,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920668810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:04,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:04,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:04,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945633751] [2024-06-28 00:24:04,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:04,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:04,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:04,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:04,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 119 transitions, 1238 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:04,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:04,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:04,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:05,106 INFO L124 PetriNetUnfolderBase]: 805/1573 cut-off events. [2024-06-28 00:24:05,107 INFO L125 PetriNetUnfolderBase]: For 28756/28760 co-relation queries the response was YES. [2024-06-28 00:24:05,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7327 conditions, 1573 events. 805/1573 cut-off events. For 28756/28760 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10692 event pairs, 315 based on Foata normal form. 12/1561 useless extension candidates. Maximal degree in co-relation 7265. Up to 1174 conditions per place. [2024-06-28 00:24:05,118 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 103 selfloop transitions, 22 changer transitions 6/142 dead transitions. [2024-06-28 00:24:05,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 142 transitions, 1560 flow [2024-06-28 00:24:05,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 00:24:05,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-28 00:24:05,119 INFO L175 Difference]: Start difference. First operand has 148 places, 119 transitions, 1238 flow. Second operand 8 states and 194 transitions. [2024-06-28 00:24:05,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 142 transitions, 1560 flow [2024-06-28 00:24:05,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1468 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:24:05,172 INFO L231 Difference]: Finished difference. Result has 147 places, 118 transitions, 1184 flow [2024-06-28 00:24:05,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1184, PETRI_PLACES=147, PETRI_TRANSITIONS=118} [2024-06-28 00:24:05,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 00:24:05,174 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 118 transitions, 1184 flow [2024-06-28 00:24:05,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:05,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:05,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:05,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:24:05,175 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:05,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:05,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1557283066, now seen corresponding path program 7 times [2024-06-28 00:24:05,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:05,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660057454] [2024-06-28 00:24:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:05,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:05,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:05,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660057454] [2024-06-28 00:24:05,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660057454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:05,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:05,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:05,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253631676] [2024-06-28 00:24:05,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:05,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:05,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:05,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:05,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:05,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 118 transitions, 1184 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:05,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:05,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:05,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:06,100 INFO L124 PetriNetUnfolderBase]: 781/1539 cut-off events. [2024-06-28 00:24:06,101 INFO L125 PetriNetUnfolderBase]: For 27337/27341 co-relation queries the response was YES. [2024-06-28 00:24:06,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7016 conditions, 1539 events. 781/1539 cut-off events. For 27337/27341 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10447 event pairs, 225 based on Foata normal form. 12/1532 useless extension candidates. Maximal degree in co-relation 6955. Up to 879 conditions per place. [2024-06-28 00:24:06,112 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 87 selfloop transitions, 41 changer transitions 10/149 dead transitions. [2024-06-28 00:24:06,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 149 transitions, 1594 flow [2024-06-28 00:24:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 00:24:06,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2024-06-28 00:24:06,113 INFO L175 Difference]: Start difference. First operand has 147 places, 118 transitions, 1184 flow. Second operand 8 states and 202 transitions. [2024-06-28 00:24:06,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 149 transitions, 1594 flow [2024-06-28 00:24:06,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 149 transitions, 1546 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:06,151 INFO L231 Difference]: Finished difference. Result has 147 places, 116 transitions, 1204 flow [2024-06-28 00:24:06,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1204, PETRI_PLACES=147, PETRI_TRANSITIONS=116} [2024-06-28 00:24:06,152 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 00:24:06,152 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 116 transitions, 1204 flow [2024-06-28 00:24:06,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:06,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:06,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:06,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:24:06,152 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:06,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:06,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1557192856, now seen corresponding path program 8 times [2024-06-28 00:24:06,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:06,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861743773] [2024-06-28 00:24:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:06,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:06,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:06,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861743773] [2024-06-28 00:24:06,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861743773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:06,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:06,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:06,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377061209] [2024-06-28 00:24:06,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:06,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:06,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:06,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:06,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:06,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:06,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 116 transitions, 1204 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:06,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:06,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:06,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:07,088 INFO L124 PetriNetUnfolderBase]: 747/1471 cut-off events. [2024-06-28 00:24:07,088 INFO L125 PetriNetUnfolderBase]: For 27326/27330 co-relation queries the response was YES. [2024-06-28 00:24:07,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 1471 events. 747/1471 cut-off events. For 27326/27330 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9916 event pairs, 229 based on Foata normal form. 12/1464 useless extension candidates. Maximal degree in co-relation 6821. Up to 975 conditions per place. [2024-06-28 00:24:07,098 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 82 selfloop transitions, 41 changer transitions 6/140 dead transitions. [2024-06-28 00:24:07,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 140 transitions, 1524 flow [2024-06-28 00:24:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 00:24:07,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-06-28 00:24:07,100 INFO L175 Difference]: Start difference. First operand has 147 places, 116 transitions, 1204 flow. Second operand 8 states and 196 transitions. [2024-06-28 00:24:07,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 140 transitions, 1524 flow [2024-06-28 00:24:07,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 140 transitions, 1442 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:07,133 INFO L231 Difference]: Finished difference. Result has 145 places, 115 transitions, 1198 flow [2024-06-28 00:24:07,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1198, PETRI_PLACES=145, PETRI_TRANSITIONS=115} [2024-06-28 00:24:07,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-28 00:24:07,133 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 115 transitions, 1198 flow [2024-06-28 00:24:07,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:07,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:07,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:07,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:24:07,134 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:07,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:07,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1496955612, now seen corresponding path program 9 times [2024-06-28 00:24:07,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:07,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925806668] [2024-06-28 00:24:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:07,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:07,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:07,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925806668] [2024-06-28 00:24:07,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925806668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:07,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:07,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:07,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082587127] [2024-06-28 00:24:07,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:07,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:07,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:07,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:07,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 115 transitions, 1198 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) [2024-06-28 00:24:07,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:07,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:07,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:08,312 INFO L124 PetriNetUnfolderBase]: 895/1807 cut-off events. [2024-06-28 00:24:08,312 INFO L125 PetriNetUnfolderBase]: For 37688/37692 co-relation queries the response was YES. [2024-06-28 00:24:08,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8338 conditions, 1807 events. 895/1807 cut-off events. For 37688/37692 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 13117 event pairs, 301 based on Foata normal form. 24/1808 useless extension candidates. Maximal degree in co-relation 8277. Up to 891 conditions per place. [2024-06-28 00:24:08,323 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 86 selfloop transitions, 45 changer transitions 4/145 dead transitions. [2024-06-28 00:24:08,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 145 transitions, 1624 flow [2024-06-28 00:24:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:24:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:24:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-06-28 00:24:08,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536585365853659 [2024-06-28 00:24:08,324 INFO L175 Difference]: Start difference. First operand has 145 places, 115 transitions, 1198 flow. Second operand 10 states and 227 transitions. [2024-06-28 00:24:08,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 145 transitions, 1624 flow [2024-06-28 00:24:08,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 1538 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:08,361 INFO L231 Difference]: Finished difference. Result has 147 places, 114 transitions, 1212 flow [2024-06-28 00:24:08,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1212, PETRI_PLACES=147, PETRI_TRANSITIONS=114} [2024-06-28 00:24:08,362 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 00:24:08,362 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 114 transitions, 1212 flow [2024-06-28 00:24:08,363 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) [2024-06-28 00:24:08,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:08,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:08,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:24:08,363 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:08,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1782292632, now seen corresponding path program 10 times [2024-06-28 00:24:08,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:08,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088377754] [2024-06-28 00:24:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:08,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:08,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088377754] [2024-06-28 00:24:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088377754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:08,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:08,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:08,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637324536] [2024-06-28 00:24:08,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:08,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:08,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:08,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:08,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:08,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:08,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 114 transitions, 1212 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:08,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:08,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:08,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:09,319 INFO L124 PetriNetUnfolderBase]: 819/1649 cut-off events. [2024-06-28 00:24:09,320 INFO L125 PetriNetUnfolderBase]: For 30942/30946 co-relation queries the response was YES. [2024-06-28 00:24:09,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 1649 events. 819/1649 cut-off events. For 30942/30946 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11742 event pairs, 281 based on Foata normal form. 12/1638 useless extension candidates. Maximal degree in co-relation 7728. Up to 1115 conditions per place. [2024-06-28 00:24:09,330 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 79 selfloop transitions, 39 changer transitions 6/135 dead transitions. [2024-06-28 00:24:09,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 135 transitions, 1516 flow [2024-06-28 00:24:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 00:24:09,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884146341463414 [2024-06-28 00:24:09,331 INFO L175 Difference]: Start difference. First operand has 147 places, 114 transitions, 1212 flow. Second operand 8 states and 193 transitions. [2024-06-28 00:24:09,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 135 transitions, 1516 flow [2024-06-28 00:24:09,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 135 transitions, 1414 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 00:24:09,368 INFO L231 Difference]: Finished difference. Result has 146 places, 113 transitions, 1181 flow [2024-06-28 00:24:09,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1181, PETRI_PLACES=146, PETRI_TRANSITIONS=113} [2024-06-28 00:24:09,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2024-06-28 00:24:09,369 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 113 transitions, 1181 flow [2024-06-28 00:24:09,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:09,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:09,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:09,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:24:09,370 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:09,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:09,370 INFO L85 PathProgramCache]: Analyzing trace with hash 485124772, now seen corresponding path program 2 times [2024-06-28 00:24:09,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:09,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943730623] [2024-06-28 00:24:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:09,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:09,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:09,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943730623] [2024-06-28 00:24:09,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943730623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:09,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:09,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:24:09,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208806551] [2024-06-28 00:24:09,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:09,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:24:09,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:09,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:24:09,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:24:09,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:09,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 113 transitions, 1181 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:09,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:09,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:09,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:10,211 INFO L124 PetriNetUnfolderBase]: 799/1607 cut-off events. [2024-06-28 00:24:10,211 INFO L125 PetriNetUnfolderBase]: For 30798/30802 co-relation queries the response was YES. [2024-06-28 00:24:10,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 1607 events. 799/1607 cut-off events. For 30798/30802 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11356 event pairs, 317 based on Foata normal form. 4/1586 useless extension candidates. Maximal degree in co-relation 7628. Up to 1176 conditions per place. [2024-06-28 00:24:10,222 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 100 selfloop transitions, 21 changer transitions 0/132 dead transitions. [2024-06-28 00:24:10,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 132 transitions, 1518 flow [2024-06-28 00:24:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:24:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:24:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 00:24:10,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-06-28 00:24:10,223 INFO L175 Difference]: Start difference. First operand has 146 places, 113 transitions, 1181 flow. Second operand 6 states and 153 transitions. [2024-06-28 00:24:10,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 132 transitions, 1518 flow [2024-06-28 00:24:10,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 132 transitions, 1436 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:10,261 INFO L231 Difference]: Finished difference. Result has 144 places, 114 transitions, 1156 flow [2024-06-28 00:24:10,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1156, PETRI_PLACES=144, PETRI_TRANSITIONS=114} [2024-06-28 00:24:10,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2024-06-28 00:24:10,261 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 114 transitions, 1156 flow [2024-06-28 00:24:10,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:10,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:10,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:24:10,262 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:10,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash 536462954, now seen corresponding path program 11 times [2024-06-28 00:24:10,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:10,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093760169] [2024-06-28 00:24:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:10,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:10,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:10,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093760169] [2024-06-28 00:24:10,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093760169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:10,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:10,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:10,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026166956] [2024-06-28 00:24:10,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:10,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:11,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:11,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 114 transitions, 1156 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) [2024-06-28 00:24:11,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:11,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:11,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:11,464 INFO L124 PetriNetUnfolderBase]: 827/1671 cut-off events. [2024-06-28 00:24:11,464 INFO L125 PetriNetUnfolderBase]: For 33034/33038 co-relation queries the response was YES. [2024-06-28 00:24:11,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7817 conditions, 1671 events. 827/1671 cut-off events. For 33034/33038 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11979 event pairs, 303 based on Foata normal form. 12/1658 useless extension candidates. Maximal degree in co-relation 7756. Up to 1223 conditions per place. [2024-06-28 00:24:11,474 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 95 selfloop transitions, 28 changer transitions 6/139 dead transitions. [2024-06-28 00:24:11,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 139 transitions, 1478 flow [2024-06-28 00:24:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:24:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:24:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2024-06-28 00:24:11,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-06-28 00:24:11,476 INFO L175 Difference]: Start difference. First operand has 144 places, 114 transitions, 1156 flow. Second operand 11 states and 242 transitions. [2024-06-28 00:24:11,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 139 transitions, 1478 flow [2024-06-28 00:24:11,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 139 transitions, 1448 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 00:24:11,510 INFO L231 Difference]: Finished difference. Result has 152 places, 113 transitions, 1176 flow [2024-06-28 00:24:11,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1176, PETRI_PLACES=152, PETRI_TRANSITIONS=113} [2024-06-28 00:24:11,511 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-28 00:24:11,511 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 113 transitions, 1176 flow [2024-06-28 00:24:11,511 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) [2024-06-28 00:24:11,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:11,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:11,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:24:11,512 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:11,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:11,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1178083334, now seen corresponding path program 12 times [2024-06-28 00:24:11,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:11,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682032687] [2024-06-28 00:24:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:11,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:12,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682032687] [2024-06-28 00:24:12,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682032687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:12,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:12,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:12,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798622874] [2024-06-28 00:24:12,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:12,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:12,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:12,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:12,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:12,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 113 transitions, 1176 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) [2024-06-28 00:24:12,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:12,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:12,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:12,581 INFO L124 PetriNetUnfolderBase]: 807/1617 cut-off events. [2024-06-28 00:24:12,581 INFO L125 PetriNetUnfolderBase]: For 33531/33535 co-relation queries the response was YES. [2024-06-28 00:24:12,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7808 conditions, 1617 events. 807/1617 cut-off events. For 33531/33535 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11353 event pairs, 345 based on Foata normal form. 4/1594 useless extension candidates. Maximal degree in co-relation 7745. Up to 1227 conditions per place. [2024-06-28 00:24:12,591 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 95 selfloop transitions, 28 changer transitions 0/133 dead transitions. [2024-06-28 00:24:12,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 133 transitions, 1476 flow [2024-06-28 00:24:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 00:24:12,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5447154471544715 [2024-06-28 00:24:12,593 INFO L175 Difference]: Start difference. First operand has 152 places, 113 transitions, 1176 flow. Second operand 9 states and 201 transitions. [2024-06-28 00:24:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 133 transitions, 1476 flow [2024-06-28 00:24:12,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 133 transitions, 1418 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:24:12,640 INFO L231 Difference]: Finished difference. Result has 150 places, 114 transitions, 1192 flow [2024-06-28 00:24:12,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1192, PETRI_PLACES=150, PETRI_TRANSITIONS=114} [2024-06-28 00:24:12,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-28 00:24:12,640 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 114 transitions, 1192 flow [2024-06-28 00:24:12,641 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) [2024-06-28 00:24:12,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:12,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:12,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:24:12,642 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:12,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1514764488, now seen corresponding path program 13 times [2024-06-28 00:24:12,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:12,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738151415] [2024-06-28 00:24:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:12,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:13,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:13,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738151415] [2024-06-28 00:24:13,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738151415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:13,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:13,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:13,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789873326] [2024-06-28 00:24:13,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:13,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:13,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:13,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:13,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 114 transitions, 1192 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) [2024-06-28 00:24:13,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:13,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:13,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:13,749 INFO L124 PetriNetUnfolderBase]: 835/1683 cut-off events. [2024-06-28 00:24:13,749 INFO L125 PetriNetUnfolderBase]: For 35957/35961 co-relation queries the response was YES. [2024-06-28 00:24:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8024 conditions, 1683 events. 835/1683 cut-off events. For 35957/35961 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11972 event pairs, 343 based on Foata normal form. 12/1668 useless extension candidates. Maximal degree in co-relation 7961. Up to 1217 conditions per place. [2024-06-28 00:24:13,760 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 93 selfloop transitions, 28 changer transitions 9/140 dead transitions. [2024-06-28 00:24:13,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 140 transitions, 1522 flow [2024-06-28 00:24:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:24:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:24:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-06-28 00:24:13,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439024390243903 [2024-06-28 00:24:13,761 INFO L175 Difference]: Start difference. First operand has 150 places, 114 transitions, 1192 flow. Second operand 10 states and 223 transitions. [2024-06-28 00:24:13,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 140 transitions, 1522 flow [2024-06-28 00:24:13,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 140 transitions, 1458 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:13,802 INFO L231 Difference]: Finished difference. Result has 155 places, 114 transitions, 1191 flow [2024-06-28 00:24:13,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1191, PETRI_PLACES=155, PETRI_TRANSITIONS=114} [2024-06-28 00:24:13,802 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2024-06-28 00:24:13,802 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 114 transitions, 1191 flow [2024-06-28 00:24:13,803 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) [2024-06-28 00:24:13,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:13,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:13,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:24:13,803 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:13,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1277857430, now seen corresponding path program 3 times [2024-06-28 00:24:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:13,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788158943] [2024-06-28 00:24:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:13,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:14,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788158943] [2024-06-28 00:24:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788158943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:14,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:14,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:24:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558159854] [2024-06-28 00:24:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:14,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:24:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:24:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:24:14,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:14,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 114 transitions, 1191 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:14,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:14,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:14,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:14,665 INFO L124 PetriNetUnfolderBase]: 795/1613 cut-off events. [2024-06-28 00:24:14,666 INFO L125 PetriNetUnfolderBase]: For 36916/36920 co-relation queries the response was YES. [2024-06-28 00:24:14,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7910 conditions, 1613 events. 795/1613 cut-off events. For 36916/36920 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11439 event pairs, 353 based on Foata normal form. 4/1590 useless extension candidates. Maximal degree in co-relation 7845. Up to 1184 conditions per place. [2024-06-28 00:24:14,676 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 97 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-06-28 00:24:14,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 130 transitions, 1467 flow [2024-06-28 00:24:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:24:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:24:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-28 00:24:14,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439024390243903 [2024-06-28 00:24:14,677 INFO L175 Difference]: Start difference. First operand has 155 places, 114 transitions, 1191 flow. Second operand 5 states and 132 transitions. [2024-06-28 00:24:14,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 130 transitions, 1467 flow [2024-06-28 00:24:14,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 130 transitions, 1407 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:24:14,734 INFO L231 Difference]: Finished difference. Result has 150 places, 114 transitions, 1189 flow [2024-06-28 00:24:14,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1189, PETRI_PLACES=150, PETRI_TRANSITIONS=114} [2024-06-28 00:24:14,734 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-28 00:24:14,734 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 114 transitions, 1189 flow [2024-06-28 00:24:14,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:14,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:14,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:14,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:24:14,735 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:14,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash -534138518, now seen corresponding path program 4 times [2024-06-28 00:24:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:14,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578076250] [2024-06-28 00:24:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:15,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:15,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578076250] [2024-06-28 00:24:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578076250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:15,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:15,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620498980] [2024-06-28 00:24:15,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:15,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:15,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:15,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:15,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:15,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 114 transitions, 1189 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) [2024-06-28 00:24:15,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:15,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:15,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:15,671 INFO L124 PetriNetUnfolderBase]: 787/1598 cut-off events. [2024-06-28 00:24:15,671 INFO L125 PetriNetUnfolderBase]: For 33210/33214 co-relation queries the response was YES. [2024-06-28 00:24:15,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7677 conditions, 1598 events. 787/1598 cut-off events. For 33210/33214 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11367 event pairs, 305 based on Foata normal form. 4/1577 useless extension candidates. Maximal degree in co-relation 7613. Up to 1182 conditions per place. [2024-06-28 00:24:15,682 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 99 selfloop transitions, 19 changer transitions 0/128 dead transitions. [2024-06-28 00:24:15,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 128 transitions, 1455 flow [2024-06-28 00:24:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:24:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:24:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 00:24:15,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.573170731707317 [2024-06-28 00:24:15,683 INFO L175 Difference]: Start difference. First operand has 150 places, 114 transitions, 1189 flow. Second operand 6 states and 141 transitions. [2024-06-28 00:24:15,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 128 transitions, 1455 flow [2024-06-28 00:24:15,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 128 transitions, 1400 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:24:15,728 INFO L231 Difference]: Finished difference. Result has 150 places, 114 transitions, 1179 flow [2024-06-28 00:24:15,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1179, PETRI_PLACES=150, PETRI_TRANSITIONS=114} [2024-06-28 00:24:15,729 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-28 00:24:15,729 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 114 transitions, 1179 flow [2024-06-28 00:24:15,729 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) [2024-06-28 00:24:15,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:15,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:15,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:24:15,730 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:15,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1121572664, now seen corresponding path program 14 times [2024-06-28 00:24:15,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:15,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912135757] [2024-06-28 00:24:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:15,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:16,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912135757] [2024-06-28 00:24:16,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912135757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:16,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:16,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:16,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146748789] [2024-06-28 00:24:16,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:16,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:16,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:16,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:16,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 114 transitions, 1179 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) [2024-06-28 00:24:16,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:16,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:16,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:16,845 INFO L124 PetriNetUnfolderBase]: 767/1566 cut-off events. [2024-06-28 00:24:16,845 INFO L125 PetriNetUnfolderBase]: For 29499/29503 co-relation queries the response was YES. [2024-06-28 00:24:16,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 1566 events. 767/1566 cut-off events. For 29499/29503 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11030 event pairs, 321 based on Foata normal form. 12/1551 useless extension candidates. Maximal degree in co-relation 7119. Up to 1179 conditions per place. [2024-06-28 00:24:16,856 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 97 selfloop transitions, 18 changer transitions 6/131 dead transitions. [2024-06-28 00:24:16,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 131 transitions, 1469 flow [2024-06-28 00:24:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-28 00:24:16,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338753387533876 [2024-06-28 00:24:16,860 INFO L175 Difference]: Start difference. First operand has 150 places, 114 transitions, 1179 flow. Second operand 9 states and 197 transitions. [2024-06-28 00:24:16,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 131 transitions, 1469 flow [2024-06-28 00:24:16,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 131 transitions, 1408 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:24:16,908 INFO L231 Difference]: Finished difference. Result has 154 places, 113 transitions, 1146 flow [2024-06-28 00:24:16,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1146, PETRI_PLACES=154, PETRI_TRANSITIONS=113} [2024-06-28 00:24:16,908 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 112 predicate places. [2024-06-28 00:24:16,908 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 113 transitions, 1146 flow [2024-06-28 00:24:16,908 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) [2024-06-28 00:24:16,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:16,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:16,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:24:16,909 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:16,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1753562356, now seen corresponding path program 15 times [2024-06-28 00:24:16,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:16,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257228925] [2024-06-28 00:24:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:16,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:17,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:17,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257228925] [2024-06-28 00:24:17,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257228925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:17,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:17,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:17,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694159822] [2024-06-28 00:24:17,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:17,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:17,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:17,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:17,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:17,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 113 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:17,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:17,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:17,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:17,900 INFO L124 PetriNetUnfolderBase]: 743/1525 cut-off events. [2024-06-28 00:24:17,900 INFO L125 PetriNetUnfolderBase]: For 29833/29837 co-relation queries the response was YES. [2024-06-28 00:24:17,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6899 conditions, 1525 events. 743/1525 cut-off events. For 29833/29837 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10748 event pairs, 267 based on Foata normal form. 12/1512 useless extension candidates. Maximal degree in co-relation 6835. Up to 1066 conditions per place. [2024-06-28 00:24:17,909 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 96 selfloop transitions, 22 changer transitions 6/135 dead transitions. [2024-06-28 00:24:17,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 135 transitions, 1456 flow [2024-06-28 00:24:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 00:24:17,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-06-28 00:24:17,910 INFO L175 Difference]: Start difference. First operand has 154 places, 113 transitions, 1146 flow. Second operand 7 states and 175 transitions. [2024-06-28 00:24:17,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 135 transitions, 1456 flow [2024-06-28 00:24:17,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 135 transitions, 1415 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:17,949 INFO L231 Difference]: Finished difference. Result has 152 places, 112 transitions, 1142 flow [2024-06-28 00:24:17,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1142, PETRI_PLACES=152, PETRI_TRANSITIONS=112} [2024-06-28 00:24:17,949 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-28 00:24:17,949 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 112 transitions, 1142 flow [2024-06-28 00:24:17,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:17,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:17,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:17,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:24:17,950 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:17,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1425041534, now seen corresponding path program 16 times [2024-06-28 00:24:17,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:17,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508802743] [2024-06-28 00:24:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:18,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508802743] [2024-06-28 00:24:18,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508802743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:18,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134516380] [2024-06-28 00:24:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:18,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:18,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:18,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:18,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:18,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:18,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 112 transitions, 1142 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:18,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:18,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:18,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:18,882 INFO L124 PetriNetUnfolderBase]: 747/1560 cut-off events. [2024-06-28 00:24:18,882 INFO L125 PetriNetUnfolderBase]: For 31145/31149 co-relation queries the response was YES. [2024-06-28 00:24:18,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6969 conditions, 1560 events. 747/1560 cut-off events. For 31145/31149 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11323 event pairs, 201 based on Foata normal form. 12/1550 useless extension candidates. Maximal degree in co-relation 6906. Up to 722 conditions per place. [2024-06-28 00:24:18,891 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 89 selfloop transitions, 26 changer transitions 12/138 dead transitions. [2024-06-28 00:24:18,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 138 transitions, 1560 flow [2024-06-28 00:24:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:18,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:18,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 00:24:18,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6167247386759582 [2024-06-28 00:24:18,893 INFO L175 Difference]: Start difference. First operand has 152 places, 112 transitions, 1142 flow. Second operand 7 states and 177 transitions. [2024-06-28 00:24:18,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 138 transitions, 1560 flow [2024-06-28 00:24:18,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 138 transitions, 1510 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:24:18,934 INFO L231 Difference]: Finished difference. Result has 152 places, 105 transitions, 1068 flow [2024-06-28 00:24:18,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1068, PETRI_PLACES=152, PETRI_TRANSITIONS=105} [2024-06-28 00:24:18,934 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-28 00:24:18,934 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 105 transitions, 1068 flow [2024-06-28 00:24:18,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:18,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:18,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:18,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:24:18,935 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:18,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1093600925, now seen corresponding path program 1 times [2024-06-28 00:24:18,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:18,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219957616] [2024-06-28 00:24:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:18,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:19,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:19,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219957616] [2024-06-28 00:24:19,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219957616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:19,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:19,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:19,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017021467] [2024-06-28 00:24:19,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:19,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:19,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:19,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:19,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:19,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 00:24:19,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 105 transitions, 1068 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) [2024-06-28 00:24:19,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:19,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 00:24:19,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:19,949 INFO L124 PetriNetUnfolderBase]: 737/1532 cut-off events. [2024-06-28 00:24:19,949 INFO L125 PetriNetUnfolderBase]: For 28937/28941 co-relation queries the response was YES. [2024-06-28 00:24:19,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 1532 events. 737/1532 cut-off events. For 28937/28941 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10812 event pairs, 302 based on Foata normal form. 6/1507 useless extension candidates. Maximal degree in co-relation 6933. Up to 1141 conditions per place. [2024-06-28 00:24:19,959 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 109 selfloop transitions, 16 changer transitions 0/135 dead transitions. [2024-06-28 00:24:19,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 135 transitions, 1443 flow [2024-06-28 00:24:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-28 00:24:19,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2024-06-28 00:24:19,960 INFO L175 Difference]: Start difference. First operand has 152 places, 105 transitions, 1068 flow. Second operand 9 states and 192 transitions. [2024-06-28 00:24:19,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 135 transitions, 1443 flow [2024-06-28 00:24:20,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 135 transitions, 1350 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:24:20,006 INFO L231 Difference]: Finished difference. Result has 153 places, 110 transitions, 1078 flow [2024-06-28 00:24:20,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=153, PETRI_TRANSITIONS=110} [2024-06-28 00:24:20,007 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-06-28 00:24:20,007 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 110 transitions, 1078 flow [2024-06-28 00:24:20,007 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) [2024-06-28 00:24:20,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:20,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:24:20,007 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:20,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -968375071, now seen corresponding path program 2 times [2024-06-28 00:24:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:20,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84074191] [2024-06-28 00:24:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:20,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:20,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84074191] [2024-06-28 00:24:20,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84074191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:20,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:20,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:20,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371384351] [2024-06-28 00:24:20,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:20,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:20,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:20,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:20,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 110 transitions, 1078 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:20,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:20,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:20,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:21,016 INFO L124 PetriNetUnfolderBase]: 769/1581 cut-off events. [2024-06-28 00:24:21,016 INFO L125 PetriNetUnfolderBase]: For 28271/28275 co-relation queries the response was YES. [2024-06-28 00:24:21,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7171 conditions, 1581 events. 769/1581 cut-off events. For 28271/28275 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11240 event pairs, 267 based on Foata normal form. 4/1555 useless extension candidates. Maximal degree in co-relation 7108. Up to 839 conditions per place. [2024-06-28 00:24:21,027 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 91 selfloop transitions, 34 changer transitions 0/136 dead transitions. [2024-06-28 00:24:21,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 136 transitions, 1514 flow [2024-06-28 00:24:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 00:24:21,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627177700348432 [2024-06-28 00:24:21,028 INFO L175 Difference]: Start difference. First operand has 153 places, 110 transitions, 1078 flow. Second operand 7 states and 180 transitions. [2024-06-28 00:24:21,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 136 transitions, 1514 flow [2024-06-28 00:24:21,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 136 transitions, 1487 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:24:21,073 INFO L231 Difference]: Finished difference. Result has 156 places, 112 transitions, 1155 flow [2024-06-28 00:24:21,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1155, PETRI_PLACES=156, PETRI_TRANSITIONS=112} [2024-06-28 00:24:21,073 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-28 00:24:21,074 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 112 transitions, 1155 flow [2024-06-28 00:24:21,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:21,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:21,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:21,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:24:21,074 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:21,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash -853083901, now seen corresponding path program 3 times [2024-06-28 00:24:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:21,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331013116] [2024-06-28 00:24:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:21,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:21,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:21,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331013116] [2024-06-28 00:24:21,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331013116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:21,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:21,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370576024] [2024-06-28 00:24:21,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:21,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:21,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:21,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 112 transitions, 1155 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:21,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:21,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:21,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:22,075 INFO L124 PetriNetUnfolderBase]: 781/1611 cut-off events. [2024-06-28 00:24:22,076 INFO L125 PetriNetUnfolderBase]: For 30946/30950 co-relation queries the response was YES. [2024-06-28 00:24:22,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1611 events. 781/1611 cut-off events. For 30946/30950 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11599 event pairs, 299 based on Foata normal form. 4/1583 useless extension candidates. Maximal degree in co-relation 7438. Up to 1122 conditions per place. [2024-06-28 00:24:22,087 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 100 selfloop transitions, 24 changer transitions 0/135 dead transitions. [2024-06-28 00:24:22,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 135 transitions, 1471 flow [2024-06-28 00:24:22,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 00:24:22,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132404181184669 [2024-06-28 00:24:22,088 INFO L175 Difference]: Start difference. First operand has 156 places, 112 transitions, 1155 flow. Second operand 7 states and 176 transitions. [2024-06-28 00:24:22,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 135 transitions, 1471 flow [2024-06-28 00:24:22,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 135 transitions, 1403 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 00:24:22,135 INFO L231 Difference]: Finished difference. Result has 159 places, 113 transitions, 1160 flow [2024-06-28 00:24:22,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1160, PETRI_PLACES=159, PETRI_TRANSITIONS=113} [2024-06-28 00:24:22,136 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-06-28 00:24:22,136 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 113 transitions, 1160 flow [2024-06-28 00:24:22,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:22,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:22,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:22,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:24:22,137 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:22,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash 563336221, now seen corresponding path program 4 times [2024-06-28 00:24:22,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:22,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518580196] [2024-06-28 00:24:22,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:22,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:22,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518580196] [2024-06-28 00:24:22,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518580196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:22,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:22,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:22,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410452655] [2024-06-28 00:24:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:22,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:22,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:22,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 113 transitions, 1160 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:22,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:22,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:22,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:23,144 INFO L124 PetriNetUnfolderBase]: 793/1627 cut-off events. [2024-06-28 00:24:23,144 INFO L125 PetriNetUnfolderBase]: For 30353/30357 co-relation queries the response was YES. [2024-06-28 00:24:23,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 1627 events. 793/1627 cut-off events. For 30353/30357 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 11623 event pairs, 271 based on Foata normal form. 4/1601 useless extension candidates. Maximal degree in co-relation 7366. Up to 855 conditions per place. [2024-06-28 00:24:23,154 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 92 selfloop transitions, 36 changer transitions 0/139 dead transitions. [2024-06-28 00:24:23,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 139 transitions, 1587 flow [2024-06-28 00:24:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 00:24:23,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627177700348432 [2024-06-28 00:24:23,155 INFO L175 Difference]: Start difference. First operand has 159 places, 113 transitions, 1160 flow. Second operand 7 states and 180 transitions. [2024-06-28 00:24:23,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 139 transitions, 1587 flow [2024-06-28 00:24:23,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 139 transitions, 1528 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:24:23,201 INFO L231 Difference]: Finished difference. Result has 160 places, 114 transitions, 1192 flow [2024-06-28 00:24:23,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1192, PETRI_PLACES=160, PETRI_TRANSITIONS=114} [2024-06-28 00:24:23,201 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-28 00:24:23,201 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 114 transitions, 1192 flow [2024-06-28 00:24:23,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:23,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:23,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:23,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:24:23,202 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:23,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash 583509603, now seen corresponding path program 5 times [2024-06-28 00:24:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:23,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030631870] [2024-06-28 00:24:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:23,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:23,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030631870] [2024-06-28 00:24:23,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030631870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:23,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:23,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768121579] [2024-06-28 00:24:23,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:23,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:23,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:23,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:23,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 114 transitions, 1192 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:23,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:23,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:23,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:24,221 INFO L124 PetriNetUnfolderBase]: 785/1615 cut-off events. [2024-06-28 00:24:24,222 INFO L125 PetriNetUnfolderBase]: For 29226/29230 co-relation queries the response was YES. [2024-06-28 00:24:24,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7358 conditions, 1615 events. 785/1615 cut-off events. For 29226/29230 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11502 event pairs, 261 based on Foata normal form. 4/1589 useless extension candidates. Maximal degree in co-relation 7296. Up to 851 conditions per place. [2024-06-28 00:24:24,230 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 91 selfloop transitions, 34 changer transitions 0/136 dead transitions. [2024-06-28 00:24:24,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 136 transitions, 1553 flow [2024-06-28 00:24:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 00:24:24,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132404181184669 [2024-06-28 00:24:24,231 INFO L175 Difference]: Start difference. First operand has 160 places, 114 transitions, 1192 flow. Second operand 7 states and 176 transitions. [2024-06-28 00:24:24,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 136 transitions, 1553 flow [2024-06-28 00:24:24,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 136 transitions, 1427 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:24,269 INFO L231 Difference]: Finished difference. Result has 160 places, 115 transitions, 1155 flow [2024-06-28 00:24:24,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1155, PETRI_PLACES=160, PETRI_TRANSITIONS=115} [2024-06-28 00:24:24,270 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-28 00:24:24,270 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 115 transitions, 1155 flow [2024-06-28 00:24:24,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:24,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:24,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:24,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:24:24,271 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:24,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2134115963, now seen corresponding path program 6 times [2024-06-28 00:24:24,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:24,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039273301] [2024-06-28 00:24:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:24,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:24,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:24,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039273301] [2024-06-28 00:24:24,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039273301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:24,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:24,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:24,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411034378] [2024-06-28 00:24:24,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:24,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:24,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:24,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:25,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:25,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 115 transitions, 1155 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:25,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:25,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:25,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:25,355 INFO L124 PetriNetUnfolderBase]: 817/1677 cut-off events. [2024-06-28 00:24:25,355 INFO L125 PetriNetUnfolderBase]: For 30234/30238 co-relation queries the response was YES. [2024-06-28 00:24:25,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1677 events. 817/1677 cut-off events. For 30234/30238 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12099 event pairs, 319 based on Foata normal form. 4/1649 useless extension candidates. Maximal degree in co-relation 7499. Up to 1103 conditions per place. [2024-06-28 00:24:25,367 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 100 selfloop transitions, 27 changer transitions 0/138 dead transitions. [2024-06-28 00:24:25,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 138 transitions, 1533 flow [2024-06-28 00:24:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 00:24:25,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132404181184669 [2024-06-28 00:24:25,368 INFO L175 Difference]: Start difference. First operand has 160 places, 115 transitions, 1155 flow. Second operand 7 states and 176 transitions. [2024-06-28 00:24:25,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 138 transitions, 1533 flow [2024-06-28 00:24:25,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 138 transitions, 1481 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:24:25,416 INFO L231 Difference]: Finished difference. Result has 163 places, 117 transitions, 1207 flow [2024-06-28 00:24:25,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1207, PETRI_PLACES=163, PETRI_TRANSITIONS=117} [2024-06-28 00:24:25,417 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-28 00:24:25,417 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 117 transitions, 1207 flow [2024-06-28 00:24:25,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:25,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:25,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:25,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:24:25,418 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:25,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:25,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1869542949, now seen corresponding path program 7 times [2024-06-28 00:24:25,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:25,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921601110] [2024-06-28 00:24:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:25,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:26,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:26,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921601110] [2024-06-28 00:24:26,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921601110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:26,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:26,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781257248] [2024-06-28 00:24:26,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:26,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:26,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:26,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 117 transitions, 1207 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:26,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:26,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:26,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:26,514 INFO L124 PetriNetUnfolderBase]: 809/1667 cut-off events. [2024-06-28 00:24:26,514 INFO L125 PetriNetUnfolderBase]: For 28965/28969 co-relation queries the response was YES. [2024-06-28 00:24:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7467 conditions, 1667 events. 809/1667 cut-off events. For 28965/28969 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 12153 event pairs, 299 based on Foata normal form. 4/1639 useless extension candidates. Maximal degree in co-relation 7404. Up to 1099 conditions per place. [2024-06-28 00:24:26,525 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 103 selfloop transitions, 29 changer transitions 0/143 dead transitions. [2024-06-28 00:24:26,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 143 transitions, 1527 flow [2024-06-28 00:24:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 00:24:26,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2024-06-28 00:24:26,526 INFO L175 Difference]: Start difference. First operand has 163 places, 117 transitions, 1207 flow. Second operand 9 states and 219 transitions. [2024-06-28 00:24:26,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 143 transitions, 1527 flow [2024-06-28 00:24:26,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 143 transitions, 1476 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 00:24:26,571 INFO L231 Difference]: Finished difference. Result has 167 places, 117 transitions, 1219 flow [2024-06-28 00:24:26,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1219, PETRI_PLACES=167, PETRI_TRANSITIONS=117} [2024-06-28 00:24:26,572 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2024-06-28 00:24:26,572 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 117 transitions, 1219 flow [2024-06-28 00:24:26,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:26,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:26,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:26,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:24:26,573 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:26,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash 793100547, now seen corresponding path program 8 times [2024-06-28 00:24:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558957081] [2024-06-28 00:24:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:27,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558957081] [2024-06-28 00:24:27,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558957081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:27,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:27,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:27,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362160234] [2024-06-28 00:24:27,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:27,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:27,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:27,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:27,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 117 transitions, 1219 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:27,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:27,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:27,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:27,324 INFO L124 PetriNetUnfolderBase]: 813/1682 cut-off events. [2024-06-28 00:24:27,325 INFO L125 PetriNetUnfolderBase]: For 29081/29085 co-relation queries the response was YES. [2024-06-28 00:24:27,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7436 conditions, 1682 events. 813/1682 cut-off events. For 29081/29085 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12357 event pairs, 318 based on Foata normal form. 8/1642 useless extension candidates. Maximal degree in co-relation 7373. Up to 1093 conditions per place. [2024-06-28 00:24:27,335 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 98 selfloop transitions, 27 changer transitions 0/136 dead transitions. [2024-06-28 00:24:27,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 136 transitions, 1527 flow [2024-06-28 00:24:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:24:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:24:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-28 00:24:27,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6536585365853659 [2024-06-28 00:24:27,337 INFO L175 Difference]: Start difference. First operand has 167 places, 117 transitions, 1219 flow. Second operand 5 states and 134 transitions. [2024-06-28 00:24:27,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 136 transitions, 1527 flow [2024-06-28 00:24:27,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 136 transitions, 1452 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:24:27,385 INFO L231 Difference]: Finished difference. Result has 163 places, 118 transitions, 1232 flow [2024-06-28 00:24:27,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1232, PETRI_PLACES=163, PETRI_TRANSITIONS=118} [2024-06-28 00:24:27,386 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-28 00:24:27,386 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 118 transitions, 1232 flow [2024-06-28 00:24:27,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:27,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:27,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:27,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:24:27,387 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:27,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:27,387 INFO L85 PathProgramCache]: Analyzing trace with hash -702165441, now seen corresponding path program 9 times [2024-06-28 00:24:27,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:27,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241918169] [2024-06-28 00:24:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:27,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:27,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:27,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241918169] [2024-06-28 00:24:27,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241918169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:27,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:27,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:27,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003191236] [2024-06-28 00:24:27,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:27,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:27,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:27,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:27,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:27,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:27,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 118 transitions, 1232 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:27,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:27,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:27,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:28,276 INFO L124 PetriNetUnfolderBase]: 805/1665 cut-off events. [2024-06-28 00:24:28,276 INFO L125 PetriNetUnfolderBase]: For 26193/26197 co-relation queries the response was YES. [2024-06-28 00:24:28,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7292 conditions, 1665 events. 805/1665 cut-off events. For 26193/26197 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12144 event pairs, 295 based on Foata normal form. 4/1635 useless extension candidates. Maximal degree in co-relation 7229. Up to 1128 conditions per place. [2024-06-28 00:24:28,287 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 106 selfloop transitions, 22 changer transitions 0/139 dead transitions. [2024-06-28 00:24:28,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 139 transitions, 1588 flow [2024-06-28 00:24:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:24:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:24:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 00:24:28,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382113821138211 [2024-06-28 00:24:28,289 INFO L175 Difference]: Start difference. First operand has 163 places, 118 transitions, 1232 flow. Second operand 6 states and 157 transitions. [2024-06-28 00:24:28,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 139 transitions, 1588 flow [2024-06-28 00:24:28,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 139 transitions, 1528 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:24:28,340 INFO L231 Difference]: Finished difference. Result has 165 places, 118 transitions, 1227 flow [2024-06-28 00:24:28,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1227, PETRI_PLACES=165, PETRI_TRANSITIONS=118} [2024-06-28 00:24:28,341 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-28 00:24:28,341 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 118 transitions, 1227 flow [2024-06-28 00:24:28,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:28,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:28,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:28,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:24:28,341 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:28,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1699372797, now seen corresponding path program 10 times [2024-06-28 00:24:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912589597] [2024-06-28 00:24:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:28,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:28,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912589597] [2024-06-28 00:24:28,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912589597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:28,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:28,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:24:28,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736965533] [2024-06-28 00:24:28,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:28,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:24:28,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:28,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:24:28,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:24:28,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:28,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 118 transitions, 1227 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:28,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:28,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:28,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:29,299 INFO L124 PetriNetUnfolderBase]: 797/1653 cut-off events. [2024-06-28 00:24:29,299 INFO L125 PetriNetUnfolderBase]: For 23275/23279 co-relation queries the response was YES. [2024-06-28 00:24:29,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7061 conditions, 1653 events. 797/1653 cut-off events. For 23275/23279 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 12032 event pairs, 295 based on Foata normal form. 4/1623 useless extension candidates. Maximal degree in co-relation 6998. Up to 1124 conditions per place. [2024-06-28 00:24:29,310 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 104 selfloop transitions, 22 changer transitions 0/137 dead transitions. [2024-06-28 00:24:29,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 137 transitions, 1523 flow [2024-06-28 00:24:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:24:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:24:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 00:24:29,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 00:24:29,311 INFO L175 Difference]: Start difference. First operand has 165 places, 118 transitions, 1227 flow. Second operand 6 states and 156 transitions. [2024-06-28 00:24:29,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 137 transitions, 1523 flow [2024-06-28 00:24:29,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 137 transitions, 1430 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:29,356 INFO L231 Difference]: Finished difference. Result has 164 places, 118 transitions, 1185 flow [2024-06-28 00:24:29,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1185, PETRI_PLACES=164, PETRI_TRANSITIONS=118} [2024-06-28 00:24:29,356 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-28 00:24:29,356 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 118 transitions, 1185 flow [2024-06-28 00:24:29,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 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) [2024-06-28 00:24:29,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:29,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:29,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:24:29,357 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:29,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:29,357 INFO L85 PathProgramCache]: Analyzing trace with hash -559355391, now seen corresponding path program 11 times [2024-06-28 00:24:29,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:29,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010278097] [2024-06-28 00:24:29,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:29,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:29,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010278097] [2024-06-28 00:24:29,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010278097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:29,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:29,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553263603] [2024-06-28 00:24:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:29,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:29,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:30,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 00:24:30,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 118 transitions, 1185 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) [2024-06-28 00:24:30,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:30,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 00:24:30,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:30,336 INFO L124 PetriNetUnfolderBase]: 809/1680 cut-off events. [2024-06-28 00:24:30,336 INFO L125 PetriNetUnfolderBase]: For 22897/22901 co-relation queries the response was YES. [2024-06-28 00:24:30,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7058 conditions, 1680 events. 809/1680 cut-off events. For 22897/22901 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12291 event pairs, 275 based on Foata normal form. 4/1656 useless extension candidates. Maximal degree in co-relation 6995. Up to 1027 conditions per place. [2024-06-28 00:24:30,348 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 96 selfloop transitions, 31 changer transitions 0/137 dead transitions. [2024-06-28 00:24:30,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 137 transitions, 1543 flow [2024-06-28 00:24:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 00:24:30,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470383275261324 [2024-06-28 00:24:30,349 INFO L175 Difference]: Start difference. First operand has 164 places, 118 transitions, 1185 flow. Second operand 7 states and 157 transitions. [2024-06-28 00:24:30,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 137 transitions, 1543 flow [2024-06-28 00:24:30,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 137 transitions, 1476 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:24:30,442 INFO L231 Difference]: Finished difference. Result has 165 places, 119 transitions, 1206 flow [2024-06-28 00:24:30,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1206, PETRI_PLACES=165, PETRI_TRANSITIONS=119} [2024-06-28 00:24:30,443 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-28 00:24:30,443 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 119 transitions, 1206 flow [2024-06-28 00:24:30,443 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) [2024-06-28 00:24:30,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:30,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:30,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:24:30,443 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:30,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1912120869, now seen corresponding path program 12 times [2024-06-28 00:24:30,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:30,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749781656] [2024-06-28 00:24:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:30,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:31,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:31,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749781656] [2024-06-28 00:24:31,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749781656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:31,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:31,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:31,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840807123] [2024-06-28 00:24:31,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:31,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:31,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:31,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:31,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 00:24:31,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 119 transitions, 1206 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) [2024-06-28 00:24:31,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:31,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 00:24:31,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:31,470 INFO L124 PetriNetUnfolderBase]: 801/1669 cut-off events. [2024-06-28 00:24:31,470 INFO L125 PetriNetUnfolderBase]: For 20411/20415 co-relation queries the response was YES. [2024-06-28 00:24:31,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 1669 events. 801/1669 cut-off events. For 20411/20415 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12194 event pairs, 199 based on Foata normal form. 6/1652 useless extension candidates. Maximal degree in co-relation 6793. Up to 946 conditions per place. [2024-06-28 00:24:31,481 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 96 selfloop transitions, 37 changer transitions 0/143 dead transitions. [2024-06-28 00:24:31,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 143 transitions, 1526 flow [2024-06-28 00:24:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 00:24:31,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5548780487804879 [2024-06-28 00:24:31,482 INFO L175 Difference]: Start difference. First operand has 165 places, 119 transitions, 1206 flow. Second operand 8 states and 182 transitions. [2024-06-28 00:24:31,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 143 transitions, 1526 flow [2024-06-28 00:24:31,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 143 transitions, 1448 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:24:31,519 INFO L231 Difference]: Finished difference. Result has 167 places, 119 transitions, 1210 flow [2024-06-28 00:24:31,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1210, PETRI_PLACES=167, PETRI_TRANSITIONS=119} [2024-06-28 00:24:31,520 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2024-06-28 00:24:31,520 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 119 transitions, 1210 flow [2024-06-28 00:24:31,520 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) [2024-06-28 00:24:31,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:31,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:31,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:24:31,521 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:31,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1262019307, now seen corresponding path program 1 times [2024-06-28 00:24:31,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:31,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171657253] [2024-06-28 00:24:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:31,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:32,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:32,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171657253] [2024-06-28 00:24:32,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171657253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:32,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:32,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:24:32,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178721229] [2024-06-28 00:24:32,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:32,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:24:32,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:32,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:24:32,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:24:32,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 00:24:32,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 119 transitions, 1210 flow. Second operand has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:32,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:32,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 00:24:32,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:32,897 INFO L124 PetriNetUnfolderBase]: 841/1760 cut-off events. [2024-06-28 00:24:32,897 INFO L125 PetriNetUnfolderBase]: For 23293/23297 co-relation queries the response was YES. [2024-06-28 00:24:32,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7147 conditions, 1760 events. 841/1760 cut-off events. For 23293/23297 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13073 event pairs, 274 based on Foata normal form. 8/1735 useless extension candidates. Maximal degree in co-relation 7083. Up to 1189 conditions per place. [2024-06-28 00:24:32,908 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 99 selfloop transitions, 9 changer transitions 30/148 dead transitions. [2024-06-28 00:24:32,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 148 transitions, 1581 flow [2024-06-28 00:24:32,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-28 00:24:32,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230352303523035 [2024-06-28 00:24:32,909 INFO L175 Difference]: Start difference. First operand has 167 places, 119 transitions, 1210 flow. Second operand 9 states and 193 transitions. [2024-06-28 00:24:32,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 148 transitions, 1581 flow [2024-06-28 00:24:33,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 148 transitions, 1497 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:24:33,007 INFO L231 Difference]: Finished difference. Result has 172 places, 110 transitions, 1057 flow [2024-06-28 00:24:33,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1057, PETRI_PLACES=172, PETRI_TRANSITIONS=110} [2024-06-28 00:24:33,007 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2024-06-28 00:24:33,008 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 110 transitions, 1057 flow [2024-06-28 00:24:33,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:33,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:33,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:24:33,008 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:33,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:33,009 INFO L85 PathProgramCache]: Analyzing trace with hash 45145227, now seen corresponding path program 2 times [2024-06-28 00:24:33,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:33,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639423769] [2024-06-28 00:24:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:33,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:33,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:33,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639423769] [2024-06-28 00:24:33,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639423769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:33,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:33,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:33,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893015553] [2024-06-28 00:24:33,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:33,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:33,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:33,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:33,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:33,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 110 transitions, 1057 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:33,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:33,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:33,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:34,277 INFO L124 PetriNetUnfolderBase]: 735/1523 cut-off events. [2024-06-28 00:24:34,277 INFO L125 PetriNetUnfolderBase]: For 24171/24171 co-relation queries the response was YES. [2024-06-28 00:24:34,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6211 conditions, 1523 events. 735/1523 cut-off events. For 24171/24171 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10939 event pairs, 231 based on Foata normal form. 8/1499 useless extension candidates. Maximal degree in co-relation 6145. Up to 779 conditions per place. [2024-06-28 00:24:34,287 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 75 selfloop transitions, 37 changer transitions 14/136 dead transitions. [2024-06-28 00:24:34,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 136 transitions, 1367 flow [2024-06-28 00:24:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 00:24:34,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636856368563685 [2024-06-28 00:24:34,289 INFO L175 Difference]: Start difference. First operand has 172 places, 110 transitions, 1057 flow. Second operand 9 states and 208 transitions. [2024-06-28 00:24:34,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 136 transitions, 1367 flow [2024-06-28 00:24:34,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 136 transitions, 1318 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 00:24:34,331 INFO L231 Difference]: Finished difference. Result has 159 places, 106 transitions, 1045 flow [2024-06-28 00:24:34,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1045, PETRI_PLACES=159, PETRI_TRANSITIONS=106} [2024-06-28 00:24:34,332 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-06-28 00:24:34,332 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 106 transitions, 1045 flow [2024-06-28 00:24:34,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:34,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:34,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:34,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:24:34,332 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:34,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2036604875, now seen corresponding path program 3 times [2024-06-28 00:24:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:34,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612046999] [2024-06-28 00:24:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:35,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:35,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612046999] [2024-06-28 00:24:35,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612046999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:35,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:35,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902434266] [2024-06-28 00:24:35,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:35,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:35,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:35,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 106 transitions, 1045 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:35,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:35,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:35,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:35,450 INFO L124 PetriNetUnfolderBase]: 702/1474 cut-off events. [2024-06-28 00:24:35,450 INFO L125 PetriNetUnfolderBase]: For 23853/23853 co-relation queries the response was YES. [2024-06-28 00:24:35,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6050 conditions, 1474 events. 702/1474 cut-off events. For 23853/23853 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10691 event pairs, 291 based on Foata normal form. 8/1456 useless extension candidates. Maximal degree in co-relation 5994. Up to 1011 conditions per place. [2024-06-28 00:24:35,460 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 83 selfloop transitions, 18 changer transitions 20/132 dead transitions. [2024-06-28 00:24:35,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 132 transitions, 1345 flow [2024-06-28 00:24:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:35,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 00:24:35,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600609756097561 [2024-06-28 00:24:35,461 INFO L175 Difference]: Start difference. First operand has 159 places, 106 transitions, 1045 flow. Second operand 8 states and 197 transitions. [2024-06-28 00:24:35,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 132 transitions, 1345 flow [2024-06-28 00:24:35,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 132 transitions, 1267 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:24:35,509 INFO L231 Difference]: Finished difference. Result has 154 places, 99 transitions, 942 flow [2024-06-28 00:24:35,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=942, PETRI_PLACES=154, PETRI_TRANSITIONS=99} [2024-06-28 00:24:35,510 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 112 predicate places. [2024-06-28 00:24:35,510 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 99 transitions, 942 flow [2024-06-28 00:24:35,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:35,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:35,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:35,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:24:35,510 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:35,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:35,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1754969607, now seen corresponding path program 4 times [2024-06-28 00:24:35,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:35,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645426069] [2024-06-28 00:24:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:36,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:36,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645426069] [2024-06-28 00:24:36,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645426069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:36,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:36,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:36,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696179617] [2024-06-28 00:24:36,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:36,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:36,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:36,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:36,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:36,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 99 transitions, 942 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:36,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:36,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:36,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:36,563 INFO L124 PetriNetUnfolderBase]: 654/1352 cut-off events. [2024-06-28 00:24:36,564 INFO L125 PetriNetUnfolderBase]: For 21917/21917 co-relation queries the response was YES. [2024-06-28 00:24:36,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5534 conditions, 1352 events. 654/1352 cut-off events. For 21917/21917 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9562 event pairs, 229 based on Foata normal form. 8/1336 useless extension candidates. Maximal degree in co-relation 5479. Up to 763 conditions per place. [2024-06-28 00:24:36,572 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 70 selfloop transitions, 32 changer transitions 14/126 dead transitions. [2024-06-28 00:24:36,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 126 transitions, 1234 flow [2024-06-28 00:24:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 00:24:36,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636856368563685 [2024-06-28 00:24:36,573 INFO L175 Difference]: Start difference. First operand has 154 places, 99 transitions, 942 flow. Second operand 9 states and 208 transitions. [2024-06-28 00:24:36,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 126 transitions, 1234 flow [2024-06-28 00:24:36,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 126 transitions, 1189 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:24:36,604 INFO L231 Difference]: Finished difference. Result has 148 places, 95 transitions, 923 flow [2024-06-28 00:24:36,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=923, PETRI_PLACES=148, PETRI_TRANSITIONS=95} [2024-06-28 00:24:36,604 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-06-28 00:24:36,605 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 95 transitions, 923 flow [2024-06-28 00:24:36,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:36,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:36,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:36,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:24:36,605 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:36,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:36,606 INFO L85 PathProgramCache]: Analyzing trace with hash 239749411, now seen corresponding path program 5 times [2024-06-28 00:24:36,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:36,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952657921] [2024-06-28 00:24:36,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:36,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:37,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:37,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952657921] [2024-06-28 00:24:37,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952657921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:37,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:37,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:37,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15021112] [2024-06-28 00:24:37,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:37,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:37,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:37,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 95 transitions, 923 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:37,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:37,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:37,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:37,817 INFO L124 PetriNetUnfolderBase]: 598/1241 cut-off events. [2024-06-28 00:24:37,817 INFO L125 PetriNetUnfolderBase]: For 17986/17986 co-relation queries the response was YES. [2024-06-28 00:24:37,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5030 conditions, 1241 events. 598/1241 cut-off events. For 17986/17986 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8566 event pairs, 113 based on Foata normal form. 8/1232 useless extension candidates. Maximal degree in co-relation 4976. Up to 427 conditions per place. [2024-06-28 00:24:37,824 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 70 selfloop transitions, 34 changer transitions 7/122 dead transitions. [2024-06-28 00:24:37,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 122 transitions, 1251 flow [2024-06-28 00:24:37,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 00:24:37,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-06-28 00:24:37,825 INFO L175 Difference]: Start difference. First operand has 148 places, 95 transitions, 923 flow. Second operand 8 states and 196 transitions. [2024-06-28 00:24:37,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 122 transitions, 1251 flow [2024-06-28 00:24:37,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 122 transitions, 1179 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:24:37,852 INFO L231 Difference]: Finished difference. Result has 143 places, 92 transitions, 897 flow [2024-06-28 00:24:37,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=897, PETRI_PLACES=143, PETRI_TRANSITIONS=92} [2024-06-28 00:24:37,853 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-28 00:24:37,853 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 92 transitions, 897 flow [2024-06-28 00:24:37,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:37,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:37,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:37,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:24:37,853 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:37,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:37,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1288964913, now seen corresponding path program 6 times [2024-06-28 00:24:37,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:37,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769627006] [2024-06-28 00:24:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:37,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:38,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:38,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:38,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769627006] [2024-06-28 00:24:38,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769627006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:38,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:38,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:38,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015154719] [2024-06-28 00:24:38,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:38,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:38,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:38,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:38,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:38,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:38,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 92 transitions, 897 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:38,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:38,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:38,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:39,107 INFO L124 PetriNetUnfolderBase]: 552/1124 cut-off events. [2024-06-28 00:24:39,107 INFO L125 PetriNetUnfolderBase]: For 14730/14730 co-relation queries the response was YES. [2024-06-28 00:24:39,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4604 conditions, 1124 events. 552/1124 cut-off events. For 14730/14730 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7410 event pairs, 221 based on Foata normal form. 8/1108 useless extension candidates. Maximal degree in co-relation 4551. Up to 613 conditions per place. [2024-06-28 00:24:39,114 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 63 selfloop transitions, 22 changer transitions 20/115 dead transitions. [2024-06-28 00:24:39,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 115 transitions, 1157 flow [2024-06-28 00:24:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-28 00:24:39,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501355013550135 [2024-06-28 00:24:39,116 INFO L175 Difference]: Start difference. First operand has 143 places, 92 transitions, 897 flow. Second operand 9 states and 203 transitions. [2024-06-28 00:24:39,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 115 transitions, 1157 flow [2024-06-28 00:24:39,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 115 transitions, 1079 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:24:39,139 INFO L231 Difference]: Finished difference. Result has 142 places, 84 transitions, 781 flow [2024-06-28 00:24:39,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=781, PETRI_PLACES=142, PETRI_TRANSITIONS=84} [2024-06-28 00:24:39,139 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-06-28 00:24:39,139 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 84 transitions, 781 flow [2024-06-28 00:24:39,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:39,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:39,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:24:39,140 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:39,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1733084057, now seen corresponding path program 7 times [2024-06-28 00:24:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:39,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490070683] [2024-06-28 00:24:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:39,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:40,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:40,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490070683] [2024-06-28 00:24:40,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490070683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:40,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:40,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:40,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559375024] [2024-06-28 00:24:40,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:40,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:40,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:40,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:40,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 84 transitions, 781 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:40,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:40,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:40,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:40,484 INFO L124 PetriNetUnfolderBase]: 499/1008 cut-off events. [2024-06-28 00:24:40,485 INFO L125 PetriNetUnfolderBase]: For 12497/12497 co-relation queries the response was YES. [2024-06-28 00:24:40,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3876 conditions, 1008 events. 499/1008 cut-off events. For 12497/12497 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6452 event pairs, 217 based on Foata normal form. 16/1006 useless extension candidates. Maximal degree in co-relation 3836. Up to 600 conditions per place. [2024-06-28 00:24:40,489 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 64 selfloop transitions, 18 changer transitions 13/105 dead transitions. [2024-06-28 00:24:40,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 105 transitions, 1015 flow [2024-06-28 00:24:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-28 00:24:40,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5474254742547425 [2024-06-28 00:24:40,490 INFO L175 Difference]: Start difference. First operand has 142 places, 84 transitions, 781 flow. Second operand 9 states and 202 transitions. [2024-06-28 00:24:40,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 105 transitions, 1015 flow [2024-06-28 00:24:40,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 105 transitions, 952 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:24:40,509 INFO L231 Difference]: Finished difference. Result has 131 places, 78 transitions, 708 flow [2024-06-28 00:24:40,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=131, PETRI_TRANSITIONS=78} [2024-06-28 00:24:40,509 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 89 predicate places. [2024-06-28 00:24:40,509 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 78 transitions, 708 flow [2024-06-28 00:24:40,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:40,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:40,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:40,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:24:40,510 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:40,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:40,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1908905457, now seen corresponding path program 8 times [2024-06-28 00:24:40,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:40,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526276386] [2024-06-28 00:24:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:40,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:41,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:41,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526276386] [2024-06-28 00:24:41,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526276386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:41,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:41,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:41,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904081716] [2024-06-28 00:24:41,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:41,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:41,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:41,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:41,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:41,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 78 transitions, 708 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:41,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:41,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:41,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:41,632 INFO L124 PetriNetUnfolderBase]: 445/920 cut-off events. [2024-06-28 00:24:41,632 INFO L125 PetriNetUnfolderBase]: For 8845/8845 co-relation queries the response was YES. [2024-06-28 00:24:41,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3474 conditions, 920 events. 445/920 cut-off events. For 8845/8845 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5858 event pairs, 197 based on Foata normal form. 8/908 useless extension candidates. Maximal degree in co-relation 3436. Up to 592 conditions per place. [2024-06-28 00:24:41,637 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 58 selfloop transitions, 15 changer transitions 17/100 dead transitions. [2024-06-28 00:24:41,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 100 transitions, 934 flow [2024-06-28 00:24:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:24:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:24:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 219 transitions. [2024-06-28 00:24:41,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341463414634147 [2024-06-28 00:24:41,638 INFO L175 Difference]: Start difference. First operand has 131 places, 78 transitions, 708 flow. Second operand 10 states and 219 transitions. [2024-06-28 00:24:41,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 100 transitions, 934 flow [2024-06-28 00:24:41,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 100 transitions, 892 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:24:41,653 INFO L231 Difference]: Finished difference. Result has 126 places, 71 transitions, 629 flow [2024-06-28 00:24:41,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=629, PETRI_PLACES=126, PETRI_TRANSITIONS=71} [2024-06-28 00:24:41,654 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2024-06-28 00:24:41,654 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 71 transitions, 629 flow [2024-06-28 00:24:41,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:41,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:41,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:41,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:24:41,655 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:41,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:41,655 INFO L85 PathProgramCache]: Analyzing trace with hash -707247581, now seen corresponding path program 9 times [2024-06-28 00:24:41,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:41,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682236486] [2024-06-28 00:24:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:41,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:42,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682236486] [2024-06-28 00:24:42,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682236486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:42,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:42,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:42,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619104134] [2024-06-28 00:24:42,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:42,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:42,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:42,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:42,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 71 transitions, 629 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:42,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:42,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:42,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:42,820 INFO L124 PetriNetUnfolderBase]: 391/829 cut-off events. [2024-06-28 00:24:42,821 INFO L125 PetriNetUnfolderBase]: For 7176/7176 co-relation queries the response was YES. [2024-06-28 00:24:42,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2943 conditions, 829 events. 391/829 cut-off events. For 7176/7176 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5303 event pairs, 41 based on Foata normal form. 16/840 useless extension candidates. Maximal degree in co-relation 2907. Up to 384 conditions per place. [2024-06-28 00:24:42,824 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 42 selfloop transitions, 14 changer transitions 25/91 dead transitions. [2024-06-28 00:24:42,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 91 transitions, 833 flow [2024-06-28 00:24:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-06-28 00:24:42,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311653116531165 [2024-06-28 00:24:42,825 INFO L175 Difference]: Start difference. First operand has 126 places, 71 transitions, 629 flow. Second operand 9 states and 196 transitions. [2024-06-28 00:24:42,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 91 transitions, 833 flow [2024-06-28 00:24:42,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 91 transitions, 773 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 00:24:42,836 INFO L231 Difference]: Finished difference. Result has 116 places, 60 transitions, 495 flow [2024-06-28 00:24:42,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=495, PETRI_PLACES=116, PETRI_TRANSITIONS=60} [2024-06-28 00:24:42,836 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2024-06-28 00:24:42,837 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 60 transitions, 495 flow [2024-06-28 00:24:42,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:42,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:42,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:42,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:24:42,837 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:42,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:42,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1183685463, now seen corresponding path program 10 times [2024-06-28 00:24:42,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:42,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009545115] [2024-06-28 00:24:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:43,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:43,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009545115] [2024-06-28 00:24:43,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009545115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:43,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:43,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:43,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39598338] [2024-06-28 00:24:43,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:43,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:43,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:43,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:43,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:43,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:43,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 60 transitions, 495 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:43,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:43,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:43,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:43,860 INFO L124 PetriNetUnfolderBase]: 299/608 cut-off events. [2024-06-28 00:24:43,861 INFO L125 PetriNetUnfolderBase]: For 4036/4036 co-relation queries the response was YES. [2024-06-28 00:24:43,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 608 events. 299/608 cut-off events. For 4036/4036 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3591 event pairs, 122 based on Foata normal form. 8/603 useless extension candidates. Maximal degree in co-relation 2184. Up to 405 conditions per place. [2024-06-28 00:24:43,863 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 42 selfloop transitions, 5 changer transitions 20/77 dead transitions. [2024-06-28 00:24:43,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 77 transitions, 663 flow [2024-06-28 00:24:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:24:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:24:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 00:24:43,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:24:43,864 INFO L175 Difference]: Start difference. First operand has 116 places, 60 transitions, 495 flow. Second operand 10 states and 205 transitions. [2024-06-28 00:24:43,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 77 transitions, 663 flow [2024-06-28 00:24:43,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 77 transitions, 618 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:24:43,872 INFO L231 Difference]: Finished difference. Result has 103 places, 55 transitions, 414 flow [2024-06-28 00:24:43,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=414, PETRI_PLACES=103, PETRI_TRANSITIONS=55} [2024-06-28 00:24:43,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2024-06-28 00:24:43,873 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 55 transitions, 414 flow [2024-06-28 00:24:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:43,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:43,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:43,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:24:43,873 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:43,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash 211223495, now seen corresponding path program 11 times [2024-06-28 00:24:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:43,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704470970] [2024-06-28 00:24:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:43,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:44,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:44,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704470970] [2024-06-28 00:24:44,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704470970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:44,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:44,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:44,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611404554] [2024-06-28 00:24:44,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:44,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:44,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:44,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:44,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:44,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 55 transitions, 414 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:44,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:44,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:44,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:45,119 INFO L124 PetriNetUnfolderBase]: 321/674 cut-off events. [2024-06-28 00:24:45,119 INFO L125 PetriNetUnfolderBase]: For 3794/3794 co-relation queries the response was YES. [2024-06-28 00:24:45,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 674 events. 321/674 cut-off events. For 3794/3794 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4101 event pairs, 132 based on Foata normal form. 8/665 useless extension candidates. Maximal degree in co-relation 2257. Up to 367 conditions per place. [2024-06-28 00:24:45,122 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 43 selfloop transitions, 9 changer transitions 15/77 dead transitions. [2024-06-28 00:24:45,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 77 transitions, 635 flow [2024-06-28 00:24:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:24:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:24:45,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2024-06-28 00:24:45,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011086474501109 [2024-06-28 00:24:45,123 INFO L175 Difference]: Start difference. First operand has 103 places, 55 transitions, 414 flow. Second operand 11 states and 226 transitions. [2024-06-28 00:24:45,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 77 transitions, 635 flow [2024-06-28 00:24:45,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 77 transitions, 608 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:24:45,129 INFO L231 Difference]: Finished difference. Result has 96 places, 51 transitions, 367 flow [2024-06-28 00:24:45,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=367, PETRI_PLACES=96, PETRI_TRANSITIONS=51} [2024-06-28 00:24:45,130 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 54 predicate places. [2024-06-28 00:24:45,130 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 51 transitions, 367 flow [2024-06-28 00:24:45,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:45,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:45,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:45,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:24:45,130 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:45,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:45,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1873877929, now seen corresponding path program 12 times [2024-06-28 00:24:45,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:45,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261316656] [2024-06-28 00:24:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:45,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:45,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:45,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261316656] [2024-06-28 00:24:45,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261316656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:45,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:45,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:45,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202399165] [2024-06-28 00:24:45,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:45,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:45,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:45,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 51 transitions, 367 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:45,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:45,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:45,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:46,115 INFO L124 PetriNetUnfolderBase]: 283/600 cut-off events. [2024-06-28 00:24:46,116 INFO L125 PetriNetUnfolderBase]: For 3686/3686 co-relation queries the response was YES. [2024-06-28 00:24:46,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2030 conditions, 600 events. 283/600 cut-off events. For 3686/3686 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3571 event pairs, 31 based on Foata normal form. 8/603 useless extension candidates. Maximal degree in co-relation 1999. Up to 220 conditions per place. [2024-06-28 00:24:46,118 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 32 selfloop transitions, 15 changer transitions 6/64 dead transitions. [2024-06-28 00:24:46,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 64 transitions, 499 flow [2024-06-28 00:24:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 00:24:46,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470383275261324 [2024-06-28 00:24:46,119 INFO L175 Difference]: Start difference. First operand has 96 places, 51 transitions, 367 flow. Second operand 7 states and 157 transitions. [2024-06-28 00:24:46,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 64 transitions, 499 flow [2024-06-28 00:24:46,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 64 transitions, 458 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:24:46,124 INFO L231 Difference]: Finished difference. Result has 88 places, 49 transitions, 344 flow [2024-06-28 00:24:46,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=88, PETRI_TRANSITIONS=49} [2024-06-28 00:24:46,125 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-06-28 00:24:46,125 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 49 transitions, 344 flow [2024-06-28 00:24:46,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:46,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:46,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:46,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:24:46,132 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:46,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:46,133 INFO L85 PathProgramCache]: Analyzing trace with hash -137853317, now seen corresponding path program 13 times [2024-06-28 00:24:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:46,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894374657] [2024-06-28 00:24:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:47,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:47,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894374657] [2024-06-28 00:24:47,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894374657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:47,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:47,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:24:47,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869961655] [2024-06-28 00:24:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:47,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:24:47,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:47,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:24:47,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:24:47,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:47,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 49 transitions, 344 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:47,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:47,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:47,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:47,332 INFO L124 PetriNetUnfolderBase]: 255/542 cut-off events. [2024-06-28 00:24:47,332 INFO L125 PetriNetUnfolderBase]: For 3710/3710 co-relation queries the response was YES. [2024-06-28 00:24:47,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 542 events. 255/542 cut-off events. For 3710/3710 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3086 event pairs, 98 based on Foata normal form. 16/547 useless extension candidates. Maximal degree in co-relation 1761. Up to 267 conditions per place. [2024-06-28 00:24:47,334 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 33 selfloop transitions, 7 changer transitions 14/64 dead transitions. [2024-06-28 00:24:47,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 64 transitions, 482 flow [2024-06-28 00:24:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 00:24:47,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-28 00:24:47,335 INFO L175 Difference]: Start difference. First operand has 88 places, 49 transitions, 344 flow. Second operand 9 states and 189 transitions. [2024-06-28 00:24:47,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 64 transitions, 482 flow [2024-06-28 00:24:47,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 64 transitions, 451 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:47,339 INFO L231 Difference]: Finished difference. Result has 88 places, 42 transitions, 251 flow [2024-06-28 00:24:47,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=88, PETRI_TRANSITIONS=42} [2024-06-28 00:24:47,340 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-06-28 00:24:47,340 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 42 transitions, 251 flow [2024-06-28 00:24:47,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:47,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:47,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:47,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:24:47,340 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:47,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:47,341 INFO L85 PathProgramCache]: Analyzing trace with hash 280274027, now seen corresponding path program 14 times [2024-06-28 00:24:47,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:47,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092558191] [2024-06-28 00:24:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:47,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:48,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092558191] [2024-06-28 00:24:48,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092558191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:48,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:48,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:48,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239536342] [2024-06-28 00:24:48,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:48,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:48,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:48,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 42 transitions, 251 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:48,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:48,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:48,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:48,299 INFO L124 PetriNetUnfolderBase]: 170/362 cut-off events. [2024-06-28 00:24:48,299 INFO L125 PetriNetUnfolderBase]: For 1481/1481 co-relation queries the response was YES. [2024-06-28 00:24:48,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 362 events. 170/362 cut-off events. For 1481/1481 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1814 event pairs, 69 based on Foata normal form. 8/360 useless extension candidates. Maximal degree in co-relation 1122. Up to 207 conditions per place. [2024-06-28 00:24:48,301 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 25 selfloop transitions, 2 changer transitions 17/55 dead transitions. [2024-06-28 00:24:48,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 55 transitions, 365 flow [2024-06-28 00:24:48,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 00:24:48,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470383275261324 [2024-06-28 00:24:48,302 INFO L175 Difference]: Start difference. First operand has 88 places, 42 transitions, 251 flow. Second operand 7 states and 157 transitions. [2024-06-28 00:24:48,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 55 transitions, 365 flow [2024-06-28 00:24:48,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 55 transitions, 323 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 00:24:48,304 INFO L231 Difference]: Finished difference. Result has 76 places, 37 transitions, 172 flow [2024-06-28 00:24:48,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=172, PETRI_PLACES=76, PETRI_TRANSITIONS=37} [2024-06-28 00:24:48,305 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-28 00:24:48,305 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 37 transitions, 172 flow [2024-06-28 00:24:48,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:48,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:48,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:48,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:24:48,305 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:48,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash 83575977, now seen corresponding path program 15 times [2024-06-28 00:24:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:48,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195191285] [2024-06-28 00:24:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:49,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:49,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195191285] [2024-06-28 00:24:49,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195191285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:49,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:49,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:24:49,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064645598] [2024-06-28 00:24:49,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:49,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:24:49,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:24:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:24:49,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:49,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 37 transitions, 172 flow. Second operand has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:49,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:49,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:49,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:49,534 INFO L124 PetriNetUnfolderBase]: 139/300 cut-off events. [2024-06-28 00:24:49,535 INFO L125 PetriNetUnfolderBase]: For 936/936 co-relation queries the response was YES. [2024-06-28 00:24:49,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 300 events. 139/300 cut-off events. For 936/936 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1397 event pairs, 20 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 837. Up to 137 conditions per place. [2024-06-28 00:24:49,536 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 22 selfloop transitions, 4 changer transitions 17/53 dead transitions. [2024-06-28 00:24:49,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 53 transitions, 290 flow [2024-06-28 00:24:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 00:24:49,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013550135501355 [2024-06-28 00:24:49,537 INFO L175 Difference]: Start difference. First operand has 76 places, 37 transitions, 172 flow. Second operand 9 states and 185 transitions. [2024-06-28 00:24:49,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 53 transitions, 290 flow [2024-06-28 00:24:49,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 53 transitions, 264 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:24:49,538 INFO L231 Difference]: Finished difference. Result has 67 places, 33 transitions, 131 flow [2024-06-28 00:24:49,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=131, PETRI_PLACES=67, PETRI_TRANSITIONS=33} [2024-06-28 00:24:49,539 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-28 00:24:49,539 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 33 transitions, 131 flow [2024-06-28 00:24:49,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:49,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:49,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:49,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:24:49,539 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:49,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash -853793849, now seen corresponding path program 16 times [2024-06-28 00:24:49,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:49,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366386170] [2024-06-28 00:24:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:49,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:50,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:50,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366386170] [2024-06-28 00:24:50,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366386170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:50,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:50,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:50,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839091424] [2024-06-28 00:24:50,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:50,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:50,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:50,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:50,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 00:24:50,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 33 transitions, 131 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:50,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:50,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 00:24:50,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:50,441 INFO L124 PetriNetUnfolderBase]: 99/226 cut-off events. [2024-06-28 00:24:50,442 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-06-28 00:24:50,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 226 events. 99/226 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 981 event pairs, 7 based on Foata normal form. 8/231 useless extension candidates. Maximal degree in co-relation 587. Up to 61 conditions per place. [2024-06-28 00:24:50,443 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 22 selfloop transitions, 4 changer transitions 10/47 dead transitions. [2024-06-28 00:24:50,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 47 transitions, 231 flow [2024-06-28 00:24:50,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 00:24:50,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5400696864111498 [2024-06-28 00:24:50,445 INFO L175 Difference]: Start difference. First operand has 67 places, 33 transitions, 131 flow. Second operand 7 states and 155 transitions. [2024-06-28 00:24:50,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 47 transitions, 231 flow [2024-06-28 00:24:50,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 207 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 00:24:50,446 INFO L231 Difference]: Finished difference. Result has 58 places, 30 transitions, 102 flow [2024-06-28 00:24:50,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=30} [2024-06-28 00:24:50,446 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-28 00:24:50,446 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 30 transitions, 102 flow [2024-06-28 00:24:50,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:50,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:50,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:50,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:24:50,447 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:50,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:50,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1096743119, now seen corresponding path program 17 times [2024-06-28 00:24:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:50,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842091378] [2024-06-28 00:24:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:50,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:51,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:51,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842091378] [2024-06-28 00:24:51,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842091378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:51,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:51,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:24:51,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115033294] [2024-06-28 00:24:51,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:51,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:24:51,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:24:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:24:51,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 00:24:51,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 30 transitions, 102 flow. Second operand has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:51,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:51,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 00:24:51,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:51,513 INFO L124 PetriNetUnfolderBase]: 43/116 cut-off events. [2024-06-28 00:24:51,513 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2024-06-28 00:24:51,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 116 events. 43/116 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 339 event pairs, 0 based on Foata normal form. 8/123 useless extension candidates. Maximal degree in co-relation 272. Up to 40 conditions per place. [2024-06-28 00:24:51,513 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-06-28 00:24:51,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 39 transitions, 164 flow [2024-06-28 00:24:51,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 00:24:51,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 00:24:51,514 INFO L175 Difference]: Start difference. First operand has 58 places, 30 transitions, 102 flow. Second operand 9 states and 174 transitions. [2024-06-28 00:24:51,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 39 transitions, 164 flow [2024-06-28 00:24:51,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:24:51,515 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2024-06-28 00:24:51,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2024-06-28 00:24:51,515 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-06-28 00:24:51,516 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2024-06-28 00:24:51,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:51,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-28 00:24:51,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-28 00:24:51,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-28 00:24:51,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-28 00:24:51,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-28 00:24:51,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-28 00:24:51,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:24:51,523 INFO L445 BasicCegarLoop]: Path program histogram: [17, 16, 12, 8, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1] [2024-06-28 00:24:51,526 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:24:51,526 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:24:51,529 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-28 00:24:51,529 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-28 00:24:51,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:24:51 BasicIcfg [2024-06-28 00:24:51,530 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:24:51,530 INFO L158 Benchmark]: Toolchain (without parser) took 84850.06ms. Allocated memory was 306.2MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 241.5MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 189.0MB. Max. memory is 16.1GB. [2024-06-28 00:24:51,530 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 161.5MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:24:51,530 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 161.5MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:24:51,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 528.10ms. Allocated memory is still 306.2MB. Free memory was 241.5MB in the beginning and 211.0MB in the end (delta: 30.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 00:24:51,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.86ms. Allocated memory is still 306.2MB. Free memory was 211.0MB in the beginning and 207.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 00:24:51,531 INFO L158 Benchmark]: Boogie Preprocessor took 45.59ms. Allocated memory is still 306.2MB. Free memory was 207.9MB in the beginning and 203.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:24:51,531 INFO L158 Benchmark]: RCFGBuilder took 803.06ms. Allocated memory is still 306.2MB. Free memory was 203.7MB in the beginning and 146.0MB in the end (delta: 57.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-28 00:24:51,531 INFO L158 Benchmark]: TraceAbstraction took 83425.41ms. Allocated memory was 306.2MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 145.0MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 92.6MB. Max. memory is 16.1GB. [2024-06-28 00:24:51,532 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 161.5MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.36ms. Allocated memory is still 161.5MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 528.10ms. Allocated memory is still 306.2MB. Free memory was 241.5MB in the beginning and 211.0MB in the end (delta: 30.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.86ms. Allocated memory is still 306.2MB. Free memory was 211.0MB in the beginning and 207.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.59ms. Allocated memory is still 306.2MB. Free memory was 207.9MB in the beginning and 203.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 803.06ms. Allocated memory is still 306.2MB. Free memory was 203.7MB in the beginning and 146.0MB in the end (delta: 57.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 83425.41ms. Allocated memory was 306.2MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 145.0MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 92.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 836]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 837]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 67 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 83.3s, OverallIterations: 87, TraceHistogramMax: 1, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 31.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4677 SdHoareTripleChecker+Valid, 14.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4012 mSDsluCounter, 910 SdHoareTripleChecker+Invalid, 12.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 668 mSDsCounter, 785 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23967 IncrementalHoareTripleChecker+Invalid, 24752 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 785 mSolverCounterUnsat, 242 mSDtfsCounter, 23967 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 672 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 671 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1310occurred in iteration=28, InterpolantAutomatonStates: 635, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 50.3s InterpolantComputationTime, 1708 NumberOfCodeBlocks, 1708 NumberOfCodeBlocksAsserted, 87 NumberOfCheckSat, 1621 ConstructedInterpolants, 0 QuantifiedInterpolants, 45316 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 87 InterpolantComputations, 87 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:24:51,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE