./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe005_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/safe005_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 eb4cb34f 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/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe005_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-eb4cb34-m [2024-06-21 19:22:34,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:22:34,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:22:34,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:22:34,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:22:34,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:22:34,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:22:34,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:22:34,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:22:34,831 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:22:34,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:22:34,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:22:34,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:22:34,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:22:34,834 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:22:34,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:22:34,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:22:34,834 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:22:34,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:22:34,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:22:34,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:22:34,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:22:34,836 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:22:34,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:22:34,837 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:22:34,837 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:22:34,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:22:34,838 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:22:34,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:22:34,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:22:34,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:22:34,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:22:34,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:22:34,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:22:34,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:22:34,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:22:34,840 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:22:34,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:22:34,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:22:34,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:22:34,841 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:22:34,841 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:22:34,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:22:34,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:22:35,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:22:35,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:22:35,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:22:35,089 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:22:35,090 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:22:35,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-21 19:22:35,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:22:35,190 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:22:35,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-21 19:22:36,116 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:22:36,347 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:22:36,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-21 19:22:36,369 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdb81aba2/8b03e8cc0c2d420ea3edadcb04a33e82/FLAG96df589c8 [2024-06-21 19:22:36,385 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdb81aba2/8b03e8cc0c2d420ea3edadcb04a33e82 [2024-06-21 19:22:36,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:22:36,387 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:22:36,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:22:36,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:22:36,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:22:36,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:22:35" (1/2) ... [2024-06-21 19:22:36,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb51476 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:22:36, skipping insertion in model container [2024-06-21 19:22:36,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:22:35" (1/2) ... [2024-06-21 19:22:36,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@17bcd00c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:22:36, skipping insertion in model container [2024-06-21 19:22:36,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:22:36" (2/2) ... [2024-06-21 19:22:36,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb51476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36, skipping insertion in model container [2024-06-21 19:22:36,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:22:36" (2/2) ... [2024-06-21 19:22:36,399 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:22:36,421 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:22:36,422 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$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$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$w_buff1_used >= 0LL) [2024-06-21 19:22:36,422 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ! multithreaded || (((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$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 )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) [2024-06-21 19:22:36,423 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$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$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) [2024-06-21 19:22:36,423 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:22:36,423 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-21 19:22:36,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:22:36,787 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:22:36,798 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:22:36,952 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:22:36,986 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:22:36,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36 WrapperNode [2024-06-21 19:22:36,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:22:36,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:22:36,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:22:36,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:22:36,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,060 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 125 [2024-06-21 19:22:37,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:22:37,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:22:37,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:22:37,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:22:37,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,087 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,104 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]. [2024-06-21 19:22:37,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:22:37,140 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:22:37,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:22:37,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:22:37,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (1/1) ... [2024-06-21 19:22:37,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:22:37,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:22:37,165 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) [2024-06-21 19:22:37,184 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 [2024-06-21 19:22:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:22:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:22:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:22:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:22:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:22:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:22:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 19:22:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 19:22:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:22:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:22:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:22:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:22:37,201 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:22:37,351 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:22:37,353 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:22:37,676 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:22:37,677 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:22:37,812 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:22:37,817 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:22:37,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:22:37 BoogieIcfgContainer [2024-06-21 19:22:37,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:22:37,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:22:37,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:22:37,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:22:37,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:22:35" (1/4) ... [2024-06-21 19:22:37,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aea60b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:22:37, skipping insertion in model container [2024-06-21 19:22:37,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:22:36" (2/4) ... [2024-06-21 19:22:37,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aea60b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:22:37, skipping insertion in model container [2024-06-21 19:22:37,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:22:36" (3/4) ... [2024-06-21 19:22:37,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aea60b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:22:37, skipping insertion in model container [2024-06-21 19:22:37,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:22:37" (4/4) ... [2024-06-21 19:22:37,826 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-21 19:22:37,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:22:37,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 19:22:37,839 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:22:37,891 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:22:37,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-21 19:22:37,939 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-21 19:22:37,939 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:22:37,941 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. [2024-06-21 19:22:37,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-21 19:22:37,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-21 19:22:37,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:22:37,962 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;@8b86419, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:22:37,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 19:22:37,965 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:22:37,965 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:22:37,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:22:37,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:37,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:22:37,966 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)] === [2024-06-21 19:22:37,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:37,973 INFO L85 PathProgramCache]: Analyzing trace with hash 362811812, now seen corresponding path program 1 times [2024-06-21 19:22:37,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:37,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366297586] [2024-06-21 19:22:37,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:37,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:38,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:38,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366297586] [2024-06-21 19:22:38,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366297586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:38,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:38,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:22:38,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957213123] [2024-06-21 19:22:38,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:38,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:22:38,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:38,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:22:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:22:38,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-21 19:22:38,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:38,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:38,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-21 19:22:38,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:38,794 INFO L124 PetriNetUnfolderBase]: 238/467 cut-off events. [2024-06-21 19:22:38,794 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-06-21 19:22:38,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 467 events. 238/467 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2583 event pairs, 52 based on Foata normal form. 9/450 useless extension candidates. Maximal degree in co-relation 884. Up to 328 conditions per place. [2024-06-21 19:22:38,801 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 24 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-06-21 19:22:38,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 142 flow [2024-06-21 19:22:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:22:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:22:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-21 19:22:38,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6991869918699187 [2024-06-21 19:22:38,812 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 86 transitions. [2024-06-21 19:22:38,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 142 flow [2024-06-21 19:22:38,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 19:22:38,816 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 78 flow [2024-06-21 19:22:38,817 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} [2024-06-21 19:22:38,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2024-06-21 19:22:38,820 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 78 flow [2024-06-21 19:22:38,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:38,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:38,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:38,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:22:38,821 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)] === [2024-06-21 19:22:38,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:38,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1615943924, now seen corresponding path program 1 times [2024-06-21 19:22:38,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:38,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732460577] [2024-06-21 19:22:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:39,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:39,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732460577] [2024-06-21 19:22:39,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732460577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:39,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:39,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:22:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13164756] [2024-06-21 19:22:39,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:39,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:22:39,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:39,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:22:39,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:22:39,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-21 19:22:39,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:39,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:39,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-21 19:22:39,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:39,325 INFO L124 PetriNetUnfolderBase]: 233/465 cut-off events. [2024-06-21 19:22:39,325 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-06-21 19:22:39,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 465 events. 233/465 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2420 event pairs, 108 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 963. Up to 368 conditions per place. [2024-06-21 19:22:39,330 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 28 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2024-06-21 19:22:39,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 191 flow [2024-06-21 19:22:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:22:39,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:22:39,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-06-21 19:22:39,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6890243902439024 [2024-06-21 19:22:39,334 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 78 flow. Second operand 4 states and 113 transitions. [2024-06-21 19:22:39,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 191 flow [2024-06-21 19:22:39,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 19:22:39,337 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 121 flow [2024-06-21 19:22:39,338 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} [2024-06-21 19:22:39,338 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-06-21 19:22:39,339 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 121 flow [2024-06-21 19:22:39,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:39,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:39,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:39,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:22:39,342 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)] === [2024-06-21 19:22:39,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1856094539, now seen corresponding path program 1 times [2024-06-21 19:22:39,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:39,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456929] [2024-06-21 19:22:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:39,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:39,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:39,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456929] [2024-06-21 19:22:39,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:39,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:39,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:22:39,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343016462] [2024-06-21 19:22:39,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:39,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:22:39,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:22:39,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:22:39,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-21 19:22:39,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:39,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:39,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-21 19:22:39,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:40,060 INFO L124 PetriNetUnfolderBase]: 254/509 cut-off events. [2024-06-21 19:22:40,060 INFO L125 PetriNetUnfolderBase]: For 214/222 co-relation queries the response was YES. [2024-06-21 19:22:40,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 509 events. 254/509 cut-off events. For 214/222 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2691 event pairs, 112 based on Foata normal form. 10/508 useless extension candidates. Maximal degree in co-relation 1235. Up to 342 conditions per place. [2024-06-21 19:22:40,064 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 39 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2024-06-21 19:22:40,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 298 flow [2024-06-21 19:22:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:22:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:22:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-06-21 19:22:40,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.697560975609756 [2024-06-21 19:22:40,068 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 121 flow. Second operand 5 states and 143 transitions. [2024-06-21 19:22:40,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 298 flow [2024-06-21 19:22:40,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-21 19:22:40,071 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 189 flow [2024-06-21 19:22:40,071 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=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-21 19:22:40,072 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-21 19:22:40,072 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 189 flow [2024-06-21 19:22:40,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:40,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:40,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:40,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:22:40,073 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)] === [2024-06-21 19:22:40,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:40,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1612200338, now seen corresponding path program 1 times [2024-06-21 19:22:40,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:40,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940749108] [2024-06-21 19:22:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:40,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:40,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:40,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940749108] [2024-06-21 19:22:40,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940749108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:40,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:40,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:22:40,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988180935] [2024-06-21 19:22:40,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:40,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:22:40,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:22:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:22:40,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-21 19:22:40,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 189 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) [2024-06-21 19:22:40,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:40,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-21 19:22:40,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:40,848 INFO L124 PetriNetUnfolderBase]: 283/572 cut-off events. [2024-06-21 19:22:40,848 INFO L125 PetriNetUnfolderBase]: For 609/619 co-relation queries the response was YES. [2024-06-21 19:22:40,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 572 events. 283/572 cut-off events. For 609/619 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3113 event pairs, 49 based on Foata normal form. 10/575 useless extension candidates. Maximal degree in co-relation 1623. Up to 360 conditions per place. [2024-06-21 19:22:40,852 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 43 selfloop transitions, 12 changer transitions 0/67 dead transitions. [2024-06-21 19:22:40,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 67 transitions, 371 flow [2024-06-21 19:22:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:22:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:22:40,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-21 19:22:40,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5640243902439024 [2024-06-21 19:22:40,854 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 189 flow. Second operand 8 states and 185 transitions. [2024-06-21 19:22:40,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 67 transitions, 371 flow [2024-06-21 19:22:40,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 67 transitions, 369 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-21 19:22:40,859 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 242 flow [2024-06-21 19:22:40,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=242, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-06-21 19:22:40,860 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-06-21 19:22:40,861 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 242 flow [2024-06-21 19:22:40,861 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) [2024-06-21 19:22:40,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:40,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:40,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:22:40,862 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)] === [2024-06-21 19:22:40,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1150000042, now seen corresponding path program 2 times [2024-06-21 19:22:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:40,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909099433] [2024-06-21 19:22:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:41,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:41,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909099433] [2024-06-21 19:22:41,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909099433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:41,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:41,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:22:41,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407188243] [2024-06-21 19:22:41,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:41,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:22:41,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:41,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:22:41,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:22:41,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-21 19:22:41,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:41,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:41,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-21 19:22:41,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:41,585 INFO L124 PetriNetUnfolderBase]: 275/557 cut-off events. [2024-06-21 19:22:41,585 INFO L125 PetriNetUnfolderBase]: For 933/963 co-relation queries the response was YES. [2024-06-21 19:22:41,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 557 events. 275/557 cut-off events. For 933/963 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3043 event pairs, 62 based on Foata normal form. 10/556 useless extension candidates. Maximal degree in co-relation 1722. Up to 367 conditions per place. [2024-06-21 19:22:41,590 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 41 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2024-06-21 19:22:41,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 421 flow [2024-06-21 19:22:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:22:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:22:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-06-21 19:22:41,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6731707317073171 [2024-06-21 19:22:41,591 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 242 flow. Second operand 5 states and 138 transitions. [2024-06-21 19:22:41,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 421 flow [2024-06-21 19:22:41,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 387 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-21 19:22:41,599 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 296 flow [2024-06-21 19:22:41,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-21 19:22:41,601 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-21 19:22:41,601 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 296 flow [2024-06-21 19:22:41,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:41,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:41,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:41,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:22:41,603 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)] === [2024-06-21 19:22:41,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:41,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1670808267, now seen corresponding path program 1 times [2024-06-21 19:22:41,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:41,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617150065] [2024-06-21 19:22:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:41,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:42,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:42,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617150065] [2024-06-21 19:22:42,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617150065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:42,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:42,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:22:42,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723171813] [2024-06-21 19:22:42,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:42,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:22:42,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:22:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:22:42,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-21 19:22:42,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 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) [2024-06-21 19:22:42,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:42,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-21 19:22:42,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:42,684 INFO L124 PetriNetUnfolderBase]: 315/654 cut-off events. [2024-06-21 19:22:42,685 INFO L125 PetriNetUnfolderBase]: For 1259/1275 co-relation queries the response was YES. [2024-06-21 19:22:42,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 654 events. 315/654 cut-off events. For 1259/1275 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3753 event pairs, 69 based on Foata normal form. 18/667 useless extension candidates. Maximal degree in co-relation 2017. Up to 330 conditions per place. [2024-06-21 19:22:42,689 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 43 selfloop transitions, 8 changer transitions 15/78 dead transitions. [2024-06-21 19:22:42,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 498 flow [2024-06-21 19:22:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:22:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:22:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-21 19:22:42,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6062717770034843 [2024-06-21 19:22:42,690 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 296 flow. Second operand 7 states and 174 transitions. [2024-06-21 19:22:42,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 498 flow [2024-06-21 19:22:42,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 486 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-21 19:22:42,693 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 269 flow [2024-06-21 19:22:42,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2024-06-21 19:22:42,694 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-06-21 19:22:42,694 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 269 flow [2024-06-21 19:22:42,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 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) [2024-06-21 19:22:42,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:42,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:42,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:22:42,695 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)] === [2024-06-21 19:22:42,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash -257186679, now seen corresponding path program 2 times [2024-06-21 19:22:42,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:42,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348434055] [2024-06-21 19:22:42,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:42,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:43,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:43,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348434055] [2024-06-21 19:22:43,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348434055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:43,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:43,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:22:43,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055079068] [2024-06-21 19:22:43,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:43,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:22:43,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:43,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:22:43,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:22:43,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-21 19:22:43,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:43,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:43,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-21 19:22:43,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:43,675 INFO L124 PetriNetUnfolderBase]: 273/591 cut-off events. [2024-06-21 19:22:43,676 INFO L125 PetriNetUnfolderBase]: For 1525/1561 co-relation queries the response was YES. [2024-06-21 19:22:43,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 591 events. 273/591 cut-off events. For 1525/1561 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3401 event pairs, 84 based on Foata normal form. 20/598 useless extension candidates. Maximal degree in co-relation 1819. Up to 299 conditions per place. [2024-06-21 19:22:43,680 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 38 selfloop transitions, 9 changer transitions 9/69 dead transitions. [2024-06-21 19:22:43,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 441 flow [2024-06-21 19:22:43,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:22:43,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:22:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-21 19:22:43,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-06-21 19:22:43,682 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 269 flow. Second operand 6 states and 165 transitions. [2024-06-21 19:22:43,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 441 flow [2024-06-21 19:22:43,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 401 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:22:43,688 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 246 flow [2024-06-21 19:22:43,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2024-06-21 19:22:43,689 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-06-21 19:22:43,689 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 246 flow [2024-06-21 19:22:43,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:43,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:43,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:43,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:22:43,690 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)] === [2024-06-21 19:22:43,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1061610841, now seen corresponding path program 3 times [2024-06-21 19:22:43,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:43,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14157377] [2024-06-21 19:22:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:43,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:44,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:44,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14157377] [2024-06-21 19:22:44,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14157377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:44,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:44,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:22:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904091194] [2024-06-21 19:22:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:44,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:22:44,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:22:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:22:44,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-21 19:22:44,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:44,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:44,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-21 19:22:44,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:44,462 INFO L124 PetriNetUnfolderBase]: 279/638 cut-off events. [2024-06-21 19:22:44,462 INFO L125 PetriNetUnfolderBase]: For 1388/1420 co-relation queries the response was YES. [2024-06-21 19:22:44,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 638 events. 279/638 cut-off events. For 1388/1420 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3889 event pairs, 55 based on Foata normal form. 20/646 useless extension candidates. Maximal degree in co-relation 1854. Up to 146 conditions per place. [2024-06-21 19:22:44,465 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 38 selfloop transitions, 10 changer transitions 10/71 dead transitions. [2024-06-21 19:22:44,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 446 flow [2024-06-21 19:22:44,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:22:44,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:22:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-21 19:22:44,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-06-21 19:22:44,467 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 246 flow. Second operand 6 states and 165 transitions. [2024-06-21 19:22:44,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 446 flow [2024-06-21 19:22:44,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 422 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 19:22:44,470 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 237 flow [2024-06-21 19:22:44,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2024-06-21 19:22:44,472 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-06-21 19:22:44,472 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 237 flow [2024-06-21 19:22:44,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:44,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:44,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:44,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:22:44,473 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:22:44,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:44,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1972294474, now seen corresponding path program 1 times [2024-06-21 19:22:44,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:44,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300541404] [2024-06-21 19:22:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:44,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:44,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:44,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300541404] [2024-06-21 19:22:44,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300541404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:44,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:44,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:22:44,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386277159] [2024-06-21 19:22:44,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:44,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:22:44,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:44,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:22:44,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:22:44,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-21 19:22:44,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:44,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:44,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-21 19:22:44,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:44,961 INFO L124 PetriNetUnfolderBase]: 240/549 cut-off events. [2024-06-21 19:22:44,961 INFO L125 PetriNetUnfolderBase]: For 1431/1463 co-relation queries the response was YES. [2024-06-21 19:22:44,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 549 events. 240/549 cut-off events. For 1431/1463 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3121 event pairs, 113 based on Foata normal form. 10/545 useless extension candidates. Maximal degree in co-relation 1681. Up to 340 conditions per place. [2024-06-21 19:22:44,965 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 36 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-21 19:22:44,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 367 flow [2024-06-21 19:22:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:22:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:22:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-06-21 19:22:44,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676829268292683 [2024-06-21 19:22:44,966 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 237 flow. Second operand 4 states and 111 transitions. [2024-06-21 19:22:44,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 367 flow [2024-06-21 19:22:44,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 341 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-21 19:22:44,969 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 254 flow [2024-06-21 19:22:44,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2024-06-21 19:22:44,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-06-21 19:22:44,970 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 254 flow [2024-06-21 19:22:44,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:44,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:44,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:44,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:22:44,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:22:44,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash 153839786, now seen corresponding path program 2 times [2024-06-21 19:22:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:44,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778262124] [2024-06-21 19:22:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:44,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:45,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:45,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778262124] [2024-06-21 19:22:45,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778262124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:45,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:45,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:22:45,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257666066] [2024-06-21 19:22:45,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:45,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:22:45,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:22:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:22:45,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-21 19:22:45,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 254 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) [2024-06-21 19:22:45,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:45,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-21 19:22:45,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:45,458 INFO L124 PetriNetUnfolderBase]: 199/453 cut-off events. [2024-06-21 19:22:45,458 INFO L125 PetriNetUnfolderBase]: For 1263/1295 co-relation queries the response was YES. [2024-06-21 19:22:45,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 453 events. 199/453 cut-off events. For 1263/1295 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2421 event pairs, 56 based on Foata normal form. 8/449 useless extension candidates. Maximal degree in co-relation 1431. Up to 269 conditions per place. [2024-06-21 19:22:45,461 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 33 selfloop transitions, 11 changer transitions 2/58 dead transitions. [2024-06-21 19:22:45,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 376 flow [2024-06-21 19:22:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:22:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:22:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-21 19:22:45,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-21 19:22:45,462 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 254 flow. Second operand 5 states and 123 transitions. [2024-06-21 19:22:45,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 376 flow [2024-06-21 19:22:45,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 365 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 19:22:45,465 INFO L231 Difference]: Finished difference. Result has 67 places, 43 transitions, 257 flow [2024-06-21 19:22:45,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=67, PETRI_TRANSITIONS=43} [2024-06-21 19:22:45,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-21 19:22:45,465 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 43 transitions, 257 flow [2024-06-21 19:22:45,466 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) [2024-06-21 19:22:45,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:45,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:45,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:22:45,466 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:22:45,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1294454409, now seen corresponding path program 1 times [2024-06-21 19:22:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:45,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175783754] [2024-06-21 19:22:45,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:45,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:45,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:45,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175783754] [2024-06-21 19:22:45,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175783754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:45,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:45,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:22:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503608948] [2024-06-21 19:22:45,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:45,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:22:45,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:22:45,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:22:46,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-21 19:22:46,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 43 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 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) [2024-06-21 19:22:46,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:46,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-21 19:22:46,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:46,140 INFO L124 PetriNetUnfolderBase]: 159/369 cut-off events. [2024-06-21 19:22:46,140 INFO L125 PetriNetUnfolderBase]: For 1370/1388 co-relation queries the response was YES. [2024-06-21 19:22:46,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 369 events. 159/369 cut-off events. For 1370/1388 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1821 event pairs, 49 based on Foata normal form. 6/363 useless extension candidates. Maximal degree in co-relation 1236. Up to 232 conditions per place. [2024-06-21 19:22:46,143 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 36 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2024-06-21 19:22:46,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 397 flow [2024-06-21 19:22:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:22:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:22:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-21 19:22:46,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6056910569105691 [2024-06-21 19:22:46,144 INFO L175 Difference]: Start difference. First operand has 67 places, 43 transitions, 257 flow. Second operand 6 states and 149 transitions. [2024-06-21 19:22:46,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 397 flow [2024-06-21 19:22:46,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 371 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 19:22:46,148 INFO L231 Difference]: Finished difference. Result has 66 places, 44 transitions, 275 flow [2024-06-21 19:22:46,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2024-06-21 19:22:46,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-21 19:22:46,149 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 275 flow [2024-06-21 19:22:46,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 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) [2024-06-21 19:22:46,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:46,149 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] [2024-06-21 19:22:46,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:22:46,150 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:22:46,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:46,150 INFO L85 PathProgramCache]: Analyzing trace with hash 198237442, now seen corresponding path program 1 times [2024-06-21 19:22:46,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:46,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70551284] [2024-06-21 19:22:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:46,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:46,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70551284] [2024-06-21 19:22:46,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70551284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:46,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:46,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:22:46,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886706661] [2024-06-21 19:22:46,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:46,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:22:46,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:46,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:22:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:22:46,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-21 19:22:46,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 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) [2024-06-21 19:22:46,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:46,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-21 19:22:46,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:46,995 INFO L124 PetriNetUnfolderBase]: 151/348 cut-off events. [2024-06-21 19:22:46,995 INFO L125 PetriNetUnfolderBase]: For 1346/1378 co-relation queries the response was YES. [2024-06-21 19:22:46,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 348 events. 151/348 cut-off events. For 1346/1378 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1699 event pairs, 40 based on Foata normal form. 8/345 useless extension candidates. Maximal degree in co-relation 1177. Up to 143 conditions per place. [2024-06-21 19:22:46,997 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 36 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-06-21 19:22:46,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 58 transitions, 399 flow [2024-06-21 19:22:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:22:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:22:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-21 19:22:46,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2024-06-21 19:22:46,999 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 275 flow. Second operand 6 states and 148 transitions. [2024-06-21 19:22:46,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 58 transitions, 399 flow [2024-06-21 19:22:47,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 379 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-21 19:22:47,002 INFO L231 Difference]: Finished difference. Result has 69 places, 44 transitions, 280 flow [2024-06-21 19:22:47,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=69, PETRI_TRANSITIONS=44} [2024-06-21 19:22:47,002 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-06-21 19:22:47,002 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 44 transitions, 280 flow [2024-06-21 19:22:47,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 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) [2024-06-21 19:22:47,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:47,003 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] [2024-06-21 19:22:47,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:22:47,003 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:22:47,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash -474930330, now seen corresponding path program 2 times [2024-06-21 19:22:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:47,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657976529] [2024-06-21 19:22:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:47,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:47,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657976529] [2024-06-21 19:22:47,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657976529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:47,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:47,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:22:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847135784] [2024-06-21 19:22:47,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:47,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:22:47,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:22:47,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:22:47,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-21 19:22:47,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 44 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:47,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:47,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-21 19:22:47,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:47,790 INFO L124 PetriNetUnfolderBase]: 143/341 cut-off events. [2024-06-21 19:22:47,790 INFO L125 PetriNetUnfolderBase]: For 1390/1422 co-relation queries the response was YES. [2024-06-21 19:22:47,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 341 events. 143/341 cut-off events. For 1390/1422 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1710 event pairs, 34 based on Foata normal form. 8/339 useless extension candidates. Maximal degree in co-relation 1123. Up to 143 conditions per place. [2024-06-21 19:22:47,793 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 37 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-21 19:22:47,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 408 flow [2024-06-21 19:22:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:22:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:22:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-21 19:22:47,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6292682926829268 [2024-06-21 19:22:47,794 INFO L175 Difference]: Start difference. First operand has 69 places, 44 transitions, 280 flow. Second operand 5 states and 129 transitions. [2024-06-21 19:22:47,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 408 flow [2024-06-21 19:22:47,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 389 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-21 19:22:47,797 INFO L231 Difference]: Finished difference. Result has 71 places, 44 transitions, 287 flow [2024-06-21 19:22:47,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=71, PETRI_TRANSITIONS=44} [2024-06-21 19:22:47,798 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-06-21 19:22:47,798 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 44 transitions, 287 flow [2024-06-21 19:22:47,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:47,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:47,799 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] [2024-06-21 19:22:47,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:22:47,799 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)] === [2024-06-21 19:22:47,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash 204450053, now seen corresponding path program 1 times [2024-06-21 19:22:47,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:47,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720767141] [2024-06-21 19:22:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:48,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:48,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720767141] [2024-06-21 19:22:48,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720767141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:48,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:48,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:22:48,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636212881] [2024-06-21 19:22:48,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:48,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:22:48,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:22:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:22:48,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-21 19:22:48,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 44 transitions, 287 flow. Second operand has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:48,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:48,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-21 19:22:48,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:48,831 INFO L124 PetriNetUnfolderBase]: 159/386 cut-off events. [2024-06-21 19:22:48,832 INFO L125 PetriNetUnfolderBase]: For 1595/1613 co-relation queries the response was YES. [2024-06-21 19:22:48,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 386 events. 159/386 cut-off events. For 1595/1613 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1974 event pairs, 42 based on Foata normal form. 10/392 useless extension candidates. Maximal degree in co-relation 1205. Up to 176 conditions per place. [2024-06-21 19:22:48,834 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 26 selfloop transitions, 4 changer transitions 23/65 dead transitions. [2024-06-21 19:22:48,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 65 transitions, 443 flow [2024-06-21 19:22:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:22:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:22:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-21 19:22:48,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578397212543554 [2024-06-21 19:22:48,835 INFO L175 Difference]: Start difference. First operand has 71 places, 44 transitions, 287 flow. Second operand 7 states and 166 transitions. [2024-06-21 19:22:48,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 65 transitions, 443 flow [2024-06-21 19:22:48,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 409 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 19:22:48,838 INFO L231 Difference]: Finished difference. Result has 73 places, 38 transitions, 214 flow [2024-06-21 19:22:48,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=73, PETRI_TRANSITIONS=38} [2024-06-21 19:22:48,839 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-06-21 19:22:48,839 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 38 transitions, 214 flow [2024-06-21 19:22:48,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:48,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:48,840 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] [2024-06-21 19:22:48,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:22:48,840 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)] === [2024-06-21 19:22:48,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash -670231609, now seen corresponding path program 2 times [2024-06-21 19:22:48,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:48,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730690527] [2024-06-21 19:22:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:48,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:49,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:49,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730690527] [2024-06-21 19:22:49,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730690527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:49,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:49,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:22:49,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335338551] [2024-06-21 19:22:49,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:49,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:22:49,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:22:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:22:49,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-21 19:22:49,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 38 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 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) [2024-06-21 19:22:49,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:49,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-21 19:22:49,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:49,792 INFO L124 PetriNetUnfolderBase]: 116/285 cut-off events. [2024-06-21 19:22:49,793 INFO L125 PetriNetUnfolderBase]: For 1229/1239 co-relation queries the response was YES. [2024-06-21 19:22:49,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 285 events. 116/285 cut-off events. For 1229/1239 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1313 event pairs, 40 based on Foata normal form. 10/289 useless extension candidates. Maximal degree in co-relation 823. Up to 115 conditions per place. [2024-06-21 19:22:49,794 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 23 selfloop transitions, 4 changer transitions 14/54 dead transitions. [2024-06-21 19:22:49,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 54 transitions, 332 flow [2024-06-21 19:22:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:22:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:22:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-21 19:22:49,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2024-06-21 19:22:49,796 INFO L175 Difference]: Start difference. First operand has 73 places, 38 transitions, 214 flow. Second operand 6 states and 154 transitions. [2024-06-21 19:22:49,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 54 transitions, 332 flow [2024-06-21 19:22:49,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 298 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:22:49,798 INFO L231 Difference]: Finished difference. Result has 63 places, 34 transitions, 151 flow [2024-06-21 19:22:49,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=63, PETRI_TRANSITIONS=34} [2024-06-21 19:22:49,798 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-21 19:22:49,798 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 34 transitions, 151 flow [2024-06-21 19:22:49,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 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) [2024-06-21 19:22:49,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:49,799 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] [2024-06-21 19:22:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:22:49,799 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)] === [2024-06-21 19:22:49,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1158179393, now seen corresponding path program 3 times [2024-06-21 19:22:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:49,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80729578] [2024-06-21 19:22:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:50,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:50,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80729578] [2024-06-21 19:22:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80729578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:50,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:50,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:22:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174697736] [2024-06-21 19:22:50,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:50,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:22:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:50,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:22:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:22:50,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 41 [2024-06-21 19:22:50,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 34 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 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) [2024-06-21 19:22:50,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:50,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 41 [2024-06-21 19:22:50,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:50,944 INFO L124 PetriNetUnfolderBase]: 88/227 cut-off events. [2024-06-21 19:22:50,944 INFO L125 PetriNetUnfolderBase]: For 693/703 co-relation queries the response was YES. [2024-06-21 19:22:50,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 227 events. 88/227 cut-off events. For 693/703 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 973 event pairs, 34 based on Foata normal form. 10/231 useless extension candidates. Maximal degree in co-relation 588. Up to 91 conditions per place. [2024-06-21 19:22:50,945 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 16 selfloop transitions, 2 changer transitions 16/47 dead transitions. [2024-06-21 19:22:50,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 47 transitions, 247 flow [2024-06-21 19:22:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:22:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:22:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-21 19:22:50,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6056910569105691 [2024-06-21 19:22:50,947 INFO L175 Difference]: Start difference. First operand has 63 places, 34 transitions, 151 flow. Second operand 6 states and 149 transitions. [2024-06-21 19:22:50,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 47 transitions, 247 flow [2024-06-21 19:22:50,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 47 transitions, 224 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:22:50,949 INFO L231 Difference]: Finished difference. Result has 57 places, 30 transitions, 104 flow [2024-06-21 19:22:50,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=30} [2024-06-21 19:22:50,950 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-06-21 19:22:50,950 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 30 transitions, 104 flow [2024-06-21 19:22:50,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 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) [2024-06-21 19:22:50,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:50,951 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] [2024-06-21 19:22:50,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:22:50,951 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)] === [2024-06-21 19:22:50,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:50,952 INFO L85 PathProgramCache]: Analyzing trace with hash -160146581, now seen corresponding path program 4 times [2024-06-21 19:22:50,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:50,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835417795] [2024-06-21 19:22:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:50,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:51,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:51,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835417795] [2024-06-21 19:22:51,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835417795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:51,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:51,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:22:51,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612384033] [2024-06-21 19:22:51,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:51,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:22:51,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:22:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:22:51,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-21 19:22:51,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 30 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:51,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:51,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-21 19:22:51,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:51,779 INFO L124 PetriNetUnfolderBase]: 38/104 cut-off events. [2024-06-21 19:22:51,779 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-06-21 19:22:51,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 104 events. 38/104 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 292 event pairs, 6 based on Foata normal form. 8/110 useless extension candidates. Maximal degree in co-relation 238. Up to 40 conditions per place. [2024-06-21 19:22:51,780 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2024-06-21 19:22:51,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 36 transitions, 152 flow [2024-06-21 19:22:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:22:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:22:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-21 19:22:51,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540650406504065 [2024-06-21 19:22:51,781 INFO L175 Difference]: Start difference. First operand has 57 places, 30 transitions, 104 flow. Second operand 6 states and 133 transitions. [2024-06-21 19:22:51,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 36 transitions, 152 flow [2024-06-21 19:22:51,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 134 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 19:22:51,782 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-21 19:22:51,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=6, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-21 19:22:51,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-06-21 19:22:51,783 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-21 19:22:51,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:51,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-21 19:22:51,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-21 19:22:51,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-21 19:22:51,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-21 19:22:51,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-21 19:22:51,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-21 19:22:51,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:22:51,788 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 2, 1, 1, 1, 1] [2024-06-21 19:22:51,791 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:22:51,791 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:22:51,794 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-21 19:22:51,794 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-21 19:22:51,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:22:51 BasicIcfg [2024-06-21 19:22:51,796 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:22:51,796 INFO L158 Benchmark]: Toolchain (without parser) took 15409.19ms. Allocated memory was 161.5MB in the beginning and 708.8MB in the end (delta: 547.4MB). Free memory was 87.4MB in the beginning and 253.2MB in the end (delta: -165.8MB). Peak memory consumption was 383.1MB. Max. memory is 16.1GB. [2024-06-21 19:22:51,796 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 161.5MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:22:51,796 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 161.5MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:22:51,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.67ms. Allocated memory is still 161.5MB. Free memory was 87.4MB in the beginning and 124.2MB in the end (delta: -36.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-21 19:22:51,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.15ms. Allocated memory is still 161.5MB. Free memory was 123.6MB in the beginning and 120.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 19:22:51,797 INFO L158 Benchmark]: Boogie Preprocessor took 78.04ms. Allocated memory is still 161.5MB. Free memory was 120.0MB in the beginning and 116.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 19:22:51,797 INFO L158 Benchmark]: RCFGBuilder took 677.69ms. Allocated memory is still 161.5MB. Free memory was 116.6MB in the beginning and 59.2MB in the end (delta: 57.4MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-06-21 19:22:51,798 INFO L158 Benchmark]: TraceAbstraction took 13976.33ms. Allocated memory was 161.5MB in the beginning and 708.8MB in the end (delta: 547.4MB). Free memory was 58.6MB in the beginning and 253.2MB in the end (delta: -194.6MB). Peak memory consumption was 355.9MB. Max. memory is 16.1GB. [2024-06-21 19:22:51,799 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 161.5MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.07ms. Allocated memory is still 161.5MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.67ms. Allocated memory is still 161.5MB. Free memory was 87.4MB in the beginning and 124.2MB in the end (delta: -36.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.15ms. Allocated memory is still 161.5MB. Free memory was 123.6MB in the beginning and 120.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.04ms. Allocated memory is still 161.5MB. Free memory was 120.0MB in the beginning and 116.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 677.69ms. Allocated memory is still 161.5MB. Free memory was 116.6MB in the beginning and 59.2MB in the end (delta: 57.4MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 13976.33ms. Allocated memory was 161.5MB in the beginning and 708.8MB in the end (delta: 547.4MB). Free memory was 58.6MB in the beginning and 253.2MB in the end (delta: -194.6MB). Peak memory consumption was 355.9MB. 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: 13.9s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 643 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 542 mSDsluCounter, 71 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2557 IncrementalHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 26 mSDtfsCounter, 2557 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=296occurred in iteration=5, InterpolantAutomatonStates: 95, 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 6977 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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! [2024-06-21 19:22:51,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE