./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_power.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/thin002_power.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/thin002_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/thin002_power.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 19:50:27,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:50:27,393 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:50:27,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:50:27,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:50:27,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:50:27,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:50:27,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:50:27,420 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:50:27,423 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:50:27,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:50:27,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:50:27,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:50:27,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:50:27,424 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:50:27,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:50:27,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:50:27,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:50:27,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:50:27,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:50:27,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:50:27,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:50:27,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:50:27,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:50:27,426 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:50:27,426 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:50:27,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:50:27,426 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:50:27,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:50:27,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:50:27,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:50:27,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:50:27,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:50:27,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:50:27,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:50:27,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:50:27,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:50:27,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:50:27,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:50:27,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:50:27,428 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:50:27,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:50:27,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:50:27,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:50:27,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:50:27,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:50:27,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:50:27,619 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:50:27,619 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:50:27,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/thin002_power.opt.yml/witness.yml [2024-06-21 19:50:27,725 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:50:27,725 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:50:27,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_power.opt.i [2024-06-21 19:50:28,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:50:28,924 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:50:28,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_power.opt.i [2024-06-21 19:50:28,945 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2921471e4/3f1522c0acc24a4abe49869e9e95d18c/FLAG2ff692d27 [2024-06-21 19:50:28,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2921471e4/3f1522c0acc24a4abe49869e9e95d18c [2024-06-21 19:50:28,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:50:28,963 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:50:28,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:50:28,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:50:28,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:50:28,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:50:27" (1/2) ... [2024-06-21 19:50:28,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7683e164 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:50:28, skipping insertion in model container [2024-06-21 19:50:28,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:50:27" (1/2) ... [2024-06-21 19:50:28,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75a2e87e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:50:28, skipping insertion in model container [2024-06-21 19:50:28,974 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:50:28" (2/2) ... [2024-06-21 19:50:28,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7683e164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:28, skipping insertion in model container [2024-06-21 19:50:28,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:50:28" (2/2) ... [2024-06-21 19:50:28,975 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:50:29,001 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:50:29,002 INFO L97 edCorrectnessWitness]: Location invariant before [L882-L882] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )a >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )z) + (long long )z$r_buff0_thd3 >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd3 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd3 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 19:50:29,002 INFO L97 edCorrectnessWitness]: Location invariant before [L883-L883] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )a >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )z) + (long long )z$r_buff0_thd3 >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd3 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd3 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 19:50:29,002 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )a >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )z) + (long long )z$r_buff0_thd3 >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd3 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd3 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 19:50:29,003 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )a >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )z) + (long long )z$r_buff0_thd3 >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p3_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd3 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd3 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd3 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 19:50:29,003 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:50:29,003 INFO L106 edCorrectnessWitness]: ghost_update [L876-L876] multithreaded = 1; [2024-06-21 19:50:29,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:50:29,340 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:50:29,351 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:50:29,529 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:50:29,557 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:50:29,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29 WrapperNode [2024-06-21 19:50:29,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:50:29,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:50:29,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:50:29,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:50:29,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,638 INFO L138 Inliner]: procedures = 176, calls = 81, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 235 [2024-06-21 19:50:29,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:50:29,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:50:29,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:50:29,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:50:29,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,708 INFO L175 MemorySlicer]: Split 30 memory accesses to 2 slices as follows [2, 28]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-21 19:50:29,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:50:29,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:50:29,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:50:29,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:50:29,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (1/1) ... [2024-06-21 19:50:29,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:50:29,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:50:29,809 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 19:50:29,815 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 19:50:29,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 19:50:29,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 19:50:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 19:50:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 19:50:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:50:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:50:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:50:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:50:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:50:29,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:50:29,844 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 19:50:29,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 19:50:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 19:50:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 19:50:29,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:50:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 19:50:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:50:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:50:29,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:50:29,848 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 19:50:30,003 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:50:30,005 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:50:30,603 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:50:30,603 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:50:30,949 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:50:30,950 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:50:30,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:50:30 BoogieIcfgContainer [2024-06-21 19:50:30,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:50:30,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:50:30,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:50:30,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:50:30,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:50:27" (1/4) ... [2024-06-21 19:50:30,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a07c4d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:50:30, skipping insertion in model container [2024-06-21 19:50:30,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:50:28" (2/4) ... [2024-06-21 19:50:30,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a07c4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:50:30, skipping insertion in model container [2024-06-21 19:50:30,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:50:29" (3/4) ... [2024-06-21 19:50:30,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a07c4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:50:30, skipping insertion in model container [2024-06-21 19:50:30,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:50:30" (4/4) ... [2024-06-21 19:50:30,959 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.opt.i [2024-06-21 19:50:30,973 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:50:30,973 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 19:50:30,973 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:50:31,067 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:50:31,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-21 19:50:31,139 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-21 19:50:31,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:50:31,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:50:31,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-21 19:50:31,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-21 19:50:31,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:50:31,173 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;@7ec32256, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:50:31,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 19:50:31,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:50:31,179 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:50:31,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:50:31,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:50:31,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:50:31,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:50:31,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:50:31,185 INFO L85 PathProgramCache]: Analyzing trace with hash 769338553, now seen corresponding path program 1 times [2024-06-21 19:50:31,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:50:31,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876666892] [2024-06-21 19:50:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:50:31,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:50:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:50:33,557 INFO 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 19:50:33,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:50:33,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876666892] [2024-06-21 19:50:33,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876666892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:50:33,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:50:33,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:50:33,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727771183] [2024-06-21 19:50:33,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:50:33,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:50:33,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:50:33,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:50:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:50:33,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-21 19:50:33,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:50:33,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:50:33,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-21 19:50:33,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:50:35,133 INFO L124 PetriNetUnfolderBase]: 5078/7078 cut-off events. [2024-06-21 19:50:35,133 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-21 19:50:35,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14301 conditions, 7078 events. 5078/7078 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 37588 event pairs, 3622 based on Foata normal form. 1/6977 useless extension candidates. Maximal degree in co-relation 14288. Up to 7001 conditions per place. [2024-06-21 19:50:35,171 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 46 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-21 19:50:35,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 245 flow [2024-06-21 19:50:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:50:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:50:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-21 19:50:35,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2024-06-21 19:50:35,183 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 97 transitions. [2024-06-21 19:50:35,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 245 flow [2024-06-21 19:50:35,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 238 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 19:50:35,190 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-21 19:50:35,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-21 19:50:35,194 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-21 19:50:35,194 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-21 19:50:35,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:50:35,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:50:35,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:50:35,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:50:35,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:50:35,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:50:35,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1428648986, now seen corresponding path program 1 times [2024-06-21 19:50:35,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:50:35,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322596065] [2024-06-21 19:50:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:50:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:50:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:50:37,597 INFO 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 19:50:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:50:37,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322596065] [2024-06-21 19:50:37,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322596065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:50:37,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:50:37,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:50:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437382489] [2024-06-21 19:50:37,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:50:37,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:50:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:50:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:50:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:50:37,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 19:50:37,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:50:37,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:50:37,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 19:50:37,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:50:39,564 INFO L124 PetriNetUnfolderBase]: 8198/11283 cut-off events. [2024-06-21 19:50:39,565 INFO L125 PetriNetUnfolderBase]: For 2074/2088 co-relation queries the response was YES. [2024-06-21 19:50:39,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25896 conditions, 11283 events. 8198/11283 cut-off events. For 2074/2088 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 59391 event pairs, 4492 based on Foata normal form. 9/11286 useless extension candidates. Maximal degree in co-relation 25884. Up to 11138 conditions per place. [2024-06-21 19:50:39,618 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 66 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2024-06-21 19:50:39,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 83 transitions, 380 flow [2024-06-21 19:50:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:50:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:50:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-21 19:50:39,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-21 19:50:39,620 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 123 transitions. [2024-06-21 19:50:39,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 83 transitions, 380 flow [2024-06-21 19:50:39,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:50:39,623 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 206 flow [2024-06-21 19:50:39,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-21 19:50:39,624 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-06-21 19:50:39,624 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 206 flow [2024-06-21 19:50:39,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:50:39,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:50:39,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:50:39,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:50:39,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:50:39,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:50:39,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1457824743, now seen corresponding path program 1 times [2024-06-21 19:50:39,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:50:39,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988835966] [2024-06-21 19:50:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:50:39,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:50:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:50:42,259 INFO 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 19:50:42,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:50:42,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988835966] [2024-06-21 19:50:42,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988835966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:50:42,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:50:42,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:50:42,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131437714] [2024-06-21 19:50:42,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:50:42,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:50:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:50:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:50:42,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:50:42,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 19:50:42,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 19:50:42,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:50:42,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 19:50:42,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:50:44,169 INFO L124 PetriNetUnfolderBase]: 8182/11259 cut-off events. [2024-06-21 19:50:44,169 INFO L125 PetriNetUnfolderBase]: For 5705/5761 co-relation queries the response was YES. [2024-06-21 19:50:44,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28861 conditions, 11259 events. 8182/11259 cut-off events. For 5705/5761 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 59425 event pairs, 3651 based on Foata normal form. 27/11280 useless extension candidates. Maximal degree in co-relation 28846. Up to 11060 conditions per place. [2024-06-21 19:50:44,218 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 75 selfloop transitions, 12 changer transitions 0/95 dead transitions. [2024-06-21 19:50:44,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 480 flow [2024-06-21 19:50:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:50:44,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:50:44,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-21 19:50:44,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-21 19:50:44,221 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 206 flow. Second operand 5 states and 147 transitions. [2024-06-21 19:50:44,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 480 flow [2024-06-21 19:50:44,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 95 transitions, 476 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-21 19:50:44,224 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 252 flow [2024-06-21 19:50:44,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-21 19:50:44,224 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-21 19:50:44,225 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 252 flow [2024-06-21 19:50:44,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 19:50:44,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:50:44,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:50:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:50:44,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:50:44,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:50:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1254285422, now seen corresponding path program 1 times [2024-06-21 19:50:44,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:50:44,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730839898] [2024-06-21 19:50:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:50:44,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:50:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:50:47,707 INFO 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 19:50:47,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:50:47,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730839898] [2024-06-21 19:50:47,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730839898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:50:47,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:50:47,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:50:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176860480] [2024-06-21 19:50:47,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:50:47,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:50:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:50:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:50:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:50:47,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:50:47,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:50:47,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:50:47,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:50:47,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:50:50,306 INFO L124 PetriNetUnfolderBase]: 7741/10651 cut-off events. [2024-06-21 19:50:50,307 INFO L125 PetriNetUnfolderBase]: For 10240/10240 co-relation queries the response was YES. [2024-06-21 19:50:50,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29724 conditions, 10651 events. 7741/10651 cut-off events. For 10240/10240 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 57427 event pairs, 4148 based on Foata normal form. 4/10653 useless extension candidates. Maximal degree in co-relation 29705. Up to 10521 conditions per place. [2024-06-21 19:50:50,350 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 84 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-06-21 19:50:50,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 111 transitions, 648 flow [2024-06-21 19:50:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:50:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:50:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-21 19:50:50,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-21 19:50:50,352 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 252 flow. Second operand 6 states and 154 transitions. [2024-06-21 19:50:50,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 111 transitions, 648 flow [2024-06-21 19:50:50,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 111 transitions, 610 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-21 19:50:50,357 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 385 flow [2024-06-21 19:50:50,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2024-06-21 19:50:50,358 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-06-21 19:50:50,358 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 385 flow [2024-06-21 19:50:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:50:50,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:50:50,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:50:50,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:50:50,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:50:50,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:50:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2101011087, now seen corresponding path program 1 times [2024-06-21 19:50:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:50:50,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206639756] [2024-06-21 19:50:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:50:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:50:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:50:53,812 INFO 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 19:50:53,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:50:53,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206639756] [2024-06-21 19:50:53,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206639756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:50:53,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:50:53,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:50:53,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455502201] [2024-06-21 19:50:53,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:50:53,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:50:53,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:50:53,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:50:53,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:50:53,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:50:53,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:50:53,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:50:53,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:50:53,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:50:56,555 INFO L124 PetriNetUnfolderBase]: 9675/13357 cut-off events. [2024-06-21 19:50:56,556 INFO L125 PetriNetUnfolderBase]: For 22179/22353 co-relation queries the response was YES. [2024-06-21 19:50:56,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42155 conditions, 13357 events. 9675/13357 cut-off events. For 22179/22353 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 73115 event pairs, 4168 based on Foata normal form. 56/13181 useless extension candidates. Maximal degree in co-relation 42130. Up to 12779 conditions per place. [2024-06-21 19:50:56,617 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 93 selfloop transitions, 37 changer transitions 0/140 dead transitions. [2024-06-21 19:50:56,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 140 transitions, 934 flow [2024-06-21 19:50:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:50:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:50:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-21 19:50:56,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-21 19:50:56,625 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 385 flow. Second operand 6 states and 166 transitions. [2024-06-21 19:50:56,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 140 transitions, 934 flow [2024-06-21 19:50:56,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 140 transitions, 934 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-21 19:50:56,641 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 638 flow [2024-06-21 19:50:56,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=638, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2024-06-21 19:50:56,643 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2024-06-21 19:50:56,643 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 638 flow [2024-06-21 19:50:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:50:56,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:50:56,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:50:56,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:50:56,644 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:50:56,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:50:56,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2074108047, now seen corresponding path program 2 times [2024-06-21 19:50:56,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:50:56,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849569104] [2024-06-21 19:50:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:50:56,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:50:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:50:59,947 INFO 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 19:50:59,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:50:59,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849569104] [2024-06-21 19:50:59,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849569104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:50:59,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:50:59,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:50:59,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038491099] [2024-06-21 19:50:59,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:50:59,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:50:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:50:59,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:50:59,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:50:59,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:50:59,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 638 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:50:59,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:50:59,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:50:59,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:51:02,735 INFO L124 PetriNetUnfolderBase]: 9609/13284 cut-off events. [2024-06-21 19:51:02,735 INFO L125 PetriNetUnfolderBase]: For 36812/36980 co-relation queries the response was YES. [2024-06-21 19:51:02,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47471 conditions, 13284 events. 9609/13284 cut-off events. For 36812/36980 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 72870 event pairs, 4168 based on Foata normal form. 33/13116 useless extension candidates. Maximal degree in co-relation 47438. Up to 12850 conditions per place. [2024-06-21 19:51:02,817 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 98 selfloop transitions, 32 changer transitions 0/140 dead transitions. [2024-06-21 19:51:02,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 140 transitions, 1088 flow [2024-06-21 19:51:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:51:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:51:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-21 19:51:02,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 19:51:02,819 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 638 flow. Second operand 7 states and 168 transitions. [2024-06-21 19:51:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 140 transitions, 1088 flow [2024-06-21 19:51:02,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 140 transitions, 1078 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-21 19:51:02,859 INFO L231 Difference]: Finished difference. Result has 88 places, 105 transitions, 841 flow [2024-06-21 19:51:02,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=841, PETRI_PLACES=88, PETRI_TRANSITIONS=105} [2024-06-21 19:51:02,862 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-06-21 19:51:02,862 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 105 transitions, 841 flow [2024-06-21 19:51:02,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:51:02,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:51:02,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:51:02,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:51:02,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:51:02,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:51:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash -221174743, now seen corresponding path program 3 times [2024-06-21 19:51:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:51:02,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526852871] [2024-06-21 19:51:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:51:02,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:51:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:51:05,605 INFO 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 19:51:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:51:05,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526852871] [2024-06-21 19:51:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526852871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:51:05,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:51:05,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:51:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854152551] [2024-06-21 19:51:05,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:51:05,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:51:05,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:51:05,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:51:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:51:05,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:51:05,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 105 transitions, 841 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:51:05,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:51:05,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:51:05,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:51:08,240 INFO L124 PetriNetUnfolderBase]: 9787/13512 cut-off events. [2024-06-21 19:51:08,241 INFO L125 PetriNetUnfolderBase]: For 51417/51640 co-relation queries the response was YES. [2024-06-21 19:51:08,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51103 conditions, 13512 events. 9787/13512 cut-off events. For 51417/51640 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 73868 event pairs, 4235 based on Foata normal form. 73/13346 useless extension candidates. Maximal degree in co-relation 51064. Up to 12890 conditions per place. [2024-06-21 19:51:08,312 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 101 selfloop transitions, 69 changer transitions 0/180 dead transitions. [2024-06-21 19:51:08,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 180 transitions, 1587 flow [2024-06-21 19:51:08,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:51:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:51:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-21 19:51:08,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493827160493827 [2024-06-21 19:51:08,314 INFO L175 Difference]: Start difference. First operand has 88 places, 105 transitions, 841 flow. Second operand 6 states and 178 transitions. [2024-06-21 19:51:08,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 180 transitions, 1587 flow [2024-06-21 19:51:08,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 180 transitions, 1570 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-21 19:51:08,360 INFO L231 Difference]: Finished difference. Result has 94 places, 130 transitions, 1262 flow [2024-06-21 19:51:08,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1262, PETRI_PLACES=94, PETRI_TRANSITIONS=130} [2024-06-21 19:51:08,361 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-06-21 19:51:08,361 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 130 transitions, 1262 flow [2024-06-21 19:51:08,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:51:08,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:51:08,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:51:08,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:51:08,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:51:08,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:51:08,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1548740277, now seen corresponding path program 1 times [2024-06-21 19:51:08,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:51:08,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875012224] [2024-06-21 19:51:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:51:08,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:51:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:51:12,102 INFO 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 19:51:12,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:51:12,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875012224] [2024-06-21 19:51:12,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875012224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:51:12,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:51:12,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:51:12,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591949881] [2024-06-21 19:51:12,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:51:12,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:51:12,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:51:12,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:51:12,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:51:12,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:51:12,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 130 transitions, 1262 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:51:12,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:51:12,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:51:12,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:51:15,149 INFO L124 PetriNetUnfolderBase]: 8144/11218 cut-off events. [2024-06-21 19:51:15,150 INFO L125 PetriNetUnfolderBase]: For 49700/49703 co-relation queries the response was YES. [2024-06-21 19:51:15,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44539 conditions, 11218 events. 8144/11218 cut-off events. For 49700/49703 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 60401 event pairs, 3920 based on Foata normal form. 10/11226 useless extension candidates. Maximal degree in co-relation 44497. Up to 11008 conditions per place. [2024-06-21 19:51:15,240 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 148 selfloop transitions, 23 changer transitions 0/178 dead transitions. [2024-06-21 19:51:15,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 178 transitions, 1783 flow [2024-06-21 19:51:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:51:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:51:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-21 19:51:15,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:51:15,242 INFO L175 Difference]: Start difference. First operand has 94 places, 130 transitions, 1262 flow. Second operand 8 states and 189 transitions. [2024-06-21 19:51:15,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 178 transitions, 1783 flow [2024-06-21 19:51:15,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 178 transitions, 1695 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-21 19:51:15,293 INFO L231 Difference]: Finished difference. Result has 99 places, 133 transitions, 1254 flow [2024-06-21 19:51:15,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1254, PETRI_PLACES=99, PETRI_TRANSITIONS=133} [2024-06-21 19:51:15,295 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 42 predicate places. [2024-06-21 19:51:15,295 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 133 transitions, 1254 flow [2024-06-21 19:51:15,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:51:15,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:51:15,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:51:15,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:51:15,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:51:15,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:51:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2025606129, now seen corresponding path program 1 times [2024-06-21 19:51:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:51:15,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666567466] [2024-06-21 19:51:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:51:15,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:51:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:51:18,855 INFO 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 19:51:18,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:51:18,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666567466] [2024-06-21 19:51:18,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666567466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:51:18,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:51:18,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:51:18,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844721166] [2024-06-21 19:51:18,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:51:18,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:51:18,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:51:18,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:51:18,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:51:18,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:51:18,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 133 transitions, 1254 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:18,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:51:18,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:51:18,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:51:22,156 INFO L124 PetriNetUnfolderBase]: 10658/14627 cut-off events. [2024-06-21 19:51:22,156 INFO L125 PetriNetUnfolderBase]: For 73366/73373 co-relation queries the response was YES. [2024-06-21 19:51:22,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59687 conditions, 14627 events. 10658/14627 cut-off events. For 73366/73373 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 76844 event pairs, 4362 based on Foata normal form. 5/14614 useless extension candidates. Maximal degree in co-relation 59644. Up to 13743 conditions per place. [2024-06-21 19:51:22,255 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 208 selfloop transitions, 82 changer transitions 0/296 dead transitions. [2024-06-21 19:51:22,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 296 transitions, 3138 flow [2024-06-21 19:51:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:51:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:51:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-21 19:51:22,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 19:51:22,256 INFO L175 Difference]: Start difference. First operand has 99 places, 133 transitions, 1254 flow. Second operand 8 states and 216 transitions. [2024-06-21 19:51:22,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 296 transitions, 3138 flow [2024-06-21 19:51:22,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 296 transitions, 3053 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 19:51:22,320 INFO L231 Difference]: Finished difference. Result has 105 places, 203 transitions, 2215 flow [2024-06-21 19:51:22,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2215, PETRI_PLACES=105, PETRI_TRANSITIONS=203} [2024-06-21 19:51:22,321 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 48 predicate places. [2024-06-21 19:51:22,321 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 203 transitions, 2215 flow [2024-06-21 19:51:22,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:22,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:51:22,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:51:22,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:51:22,322 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:51:22,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:51:22,322 INFO L85 PathProgramCache]: Analyzing trace with hash 11726283, now seen corresponding path program 2 times [2024-06-21 19:51:22,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:51:22,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640639152] [2024-06-21 19:51:22,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:51:22,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:51:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:51:25,807 INFO 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 19:51:25,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:51:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640639152] [2024-06-21 19:51:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640639152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:51:25,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:51:25,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:51:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960963295] [2024-06-21 19:51:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:51:25,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:51:25,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:51:25,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:51:25,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:51:25,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:51:25,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 203 transitions, 2215 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:25,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:51:25,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:51:25,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:51:29,177 INFO L124 PetriNetUnfolderBase]: 10742/14788 cut-off events. [2024-06-21 19:51:29,177 INFO L125 PetriNetUnfolderBase]: For 90364/90410 co-relation queries the response was YES. [2024-06-21 19:51:29,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65536 conditions, 14788 events. 10742/14788 cut-off events. For 90364/90410 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 78352 event pairs, 4512 based on Foata normal form. 38/14811 useless extension candidates. Maximal degree in co-relation 65488. Up to 13827 conditions per place. [2024-06-21 19:51:29,276 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 174 selfloop transitions, 102 changer transitions 0/282 dead transitions. [2024-06-21 19:51:29,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 282 transitions, 3310 flow [2024-06-21 19:51:29,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:51:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:51:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-21 19:51:29,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947089947089947 [2024-06-21 19:51:29,279 INFO L175 Difference]: Start difference. First operand has 105 places, 203 transitions, 2215 flow. Second operand 7 states and 187 transitions. [2024-06-21 19:51:29,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 282 transitions, 3310 flow [2024-06-21 19:51:29,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 282 transitions, 3270 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-21 19:51:29,374 INFO L231 Difference]: Finished difference. Result has 113 places, 219 transitions, 2659 flow [2024-06-21 19:51:29,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2659, PETRI_PLACES=113, PETRI_TRANSITIONS=219} [2024-06-21 19:51:29,375 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 56 predicate places. [2024-06-21 19:51:29,375 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 219 transitions, 2659 flow [2024-06-21 19:51:29,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:29,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:51:29,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:51:29,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:51:29,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:51:29,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:51:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 127167183, now seen corresponding path program 3 times [2024-06-21 19:51:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:51:29,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999949300] [2024-06-21 19:51:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:51:29,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:51:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:51:33,127 INFO 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 19:51:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:51:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999949300] [2024-06-21 19:51:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999949300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:51:33,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:51:33,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:51:33,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961194979] [2024-06-21 19:51:33,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:51:33,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:51:33,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:51:33,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:51:33,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:51:33,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:51:33,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 219 transitions, 2659 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:33,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:51:33,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:51:33,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:51:36,571 INFO L124 PetriNetUnfolderBase]: 10816/14927 cut-off events. [2024-06-21 19:51:36,572 INFO L125 PetriNetUnfolderBase]: For 106834/106912 co-relation queries the response was YES. [2024-06-21 19:51:36,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68671 conditions, 14927 events. 10816/14927 cut-off events. For 106834/106912 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 79729 event pairs, 4427 based on Foata normal form. 65/14985 useless extension candidates. Maximal degree in co-relation 68618. Up to 14181 conditions per place. [2024-06-21 19:51:36,696 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 212 selfloop transitions, 78 changer transitions 0/296 dead transitions. [2024-06-21 19:51:36,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 296 transitions, 3705 flow [2024-06-21 19:51:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:51:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:51:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-21 19:51:36,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44650205761316875 [2024-06-21 19:51:36,698 INFO L175 Difference]: Start difference. First operand has 113 places, 219 transitions, 2659 flow. Second operand 9 states and 217 transitions. [2024-06-21 19:51:36,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 296 transitions, 3705 flow [2024-06-21 19:51:36,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 296 transitions, 3537 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-21 19:51:36,885 INFO L231 Difference]: Finished difference. Result has 120 places, 231 transitions, 2855 flow [2024-06-21 19:51:36,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2855, PETRI_PLACES=120, PETRI_TRANSITIONS=231} [2024-06-21 19:51:36,885 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2024-06-21 19:51:36,886 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 231 transitions, 2855 flow [2024-06-21 19:51:36,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:36,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:51:36,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:51:36,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:51:36,886 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:51:36,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:51:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash 127161603, now seen corresponding path program 4 times [2024-06-21 19:51:36,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:51:36,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38295136] [2024-06-21 19:51:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:51:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:51:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:51:40,546 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 19:51:40,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:51:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38295136] [2024-06-21 19:51:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38295136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:51:40,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:51:40,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:51:40,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234535892] [2024-06-21 19:51:40,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:51:40,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:51:40,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:51:40,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:51:40,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:51:40,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:51:40,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 231 transitions, 2855 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:40,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:51:40,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:51:40,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:51:43,809 INFO L124 PetriNetUnfolderBase]: 10796/14888 cut-off events. [2024-06-21 19:51:43,809 INFO L125 PetriNetUnfolderBase]: For 109018/109074 co-relation queries the response was YES. [2024-06-21 19:51:43,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68449 conditions, 14888 events. 10796/14888 cut-off events. For 109018/109074 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 79132 event pairs, 4560 based on Foata normal form. 50/14925 useless extension candidates. Maximal degree in co-relation 68394. Up to 14165 conditions per place. [2024-06-21 19:51:43,899 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 192 selfloop transitions, 76 changer transitions 0/274 dead transitions. [2024-06-21 19:51:43,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 274 transitions, 3589 flow [2024-06-21 19:51:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:51:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:51:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-21 19:51:43,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-21 19:51:43,902 INFO L175 Difference]: Start difference. First operand has 120 places, 231 transitions, 2855 flow. Second operand 7 states and 167 transitions. [2024-06-21 19:51:43,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 274 transitions, 3589 flow [2024-06-21 19:51:44,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 274 transitions, 3383 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 19:51:44,031 INFO L231 Difference]: Finished difference. Result has 121 places, 231 transitions, 2817 flow [2024-06-21 19:51:44,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2817, PETRI_PLACES=121, PETRI_TRANSITIONS=231} [2024-06-21 19:51:44,031 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2024-06-21 19:51:44,032 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 231 transitions, 2817 flow [2024-06-21 19:51:44,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:44,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:51:44,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:51:44,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:51:44,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:51:44,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:51:44,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1733519179, now seen corresponding path program 5 times [2024-06-21 19:51:44,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:51:44,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296762503] [2024-06-21 19:51:44,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:51:44,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:51:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:51:47,076 INFO 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 19:51:47,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:51:47,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296762503] [2024-06-21 19:51:47,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296762503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:51:47,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:51:47,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:51:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706522833] [2024-06-21 19:51:47,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:51:47,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:51:47,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:51:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:51:47,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:51:47,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:51:47,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 231 transitions, 2817 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:47,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:51:47,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:51:47,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:51:50,285 INFO L124 PetriNetUnfolderBase]: 11032/15248 cut-off events. [2024-06-21 19:51:50,285 INFO L125 PetriNetUnfolderBase]: For 120276/120332 co-relation queries the response was YES. [2024-06-21 19:51:50,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71049 conditions, 15248 events. 11032/15248 cut-off events. For 120276/120332 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 81432 event pairs, 4516 based on Foata normal form. 46/15281 useless extension candidates. Maximal degree in co-relation 70993. Up to 14127 conditions per place. [2024-06-21 19:51:50,396 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 185 selfloop transitions, 150 changer transitions 0/341 dead transitions. [2024-06-21 19:51:50,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 341 transitions, 4174 flow [2024-06-21 19:51:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:51:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:51:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-21 19:51:50,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291005291005291 [2024-06-21 19:51:50,397 INFO L175 Difference]: Start difference. First operand has 121 places, 231 transitions, 2817 flow. Second operand 7 states and 200 transitions. [2024-06-21 19:51:50,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 341 transitions, 4174 flow [2024-06-21 19:51:50,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 341 transitions, 3986 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-21 19:51:50,536 INFO L231 Difference]: Finished difference. Result has 125 places, 277 transitions, 3494 flow [2024-06-21 19:51:50,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3494, PETRI_PLACES=125, PETRI_TRANSITIONS=277} [2024-06-21 19:51:50,537 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 68 predicate places. [2024-06-21 19:51:50,537 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 277 transitions, 3494 flow [2024-06-21 19:51:50,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 19:51:50,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:51:50,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:51:50,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:51:50,537 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:51:50,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:51:50,538 INFO L85 PathProgramCache]: Analyzing trace with hash -439835536, now seen corresponding path program 1 times [2024-06-21 19:51:50,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:51:50,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166687129] [2024-06-21 19:51:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:51:50,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:51:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:51:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:51:53,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:51:53,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166687129] [2024-06-21 19:51:53,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166687129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:51:53,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:51:53,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:51:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182963379] [2024-06-21 19:51:53,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:51:53,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:51:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:51:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:51:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:51:53,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:51:53,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 277 transitions, 3494 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:51:53,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:51:53,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:51:53,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:51:57,412 INFO L124 PetriNetUnfolderBase]: 11108/15422 cut-off events. [2024-06-21 19:51:57,412 INFO L125 PetriNetUnfolderBase]: For 147271/147531 co-relation queries the response was YES. [2024-06-21 19:51:57,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75750 conditions, 15422 events. 11108/15422 cut-off events. For 147271/147531 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 85127 event pairs, 3955 based on Foata normal form. 62/15108 useless extension candidates. Maximal degree in co-relation 75691. Up to 13745 conditions per place. [2024-06-21 19:51:57,529 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 178 selfloop transitions, 125 changer transitions 0/344 dead transitions. [2024-06-21 19:51:57,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 344 transitions, 4501 flow [2024-06-21 19:51:57,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:51:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:51:57,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-21 19:51:57,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105820105820106 [2024-06-21 19:51:57,531 INFO L175 Difference]: Start difference. First operand has 125 places, 277 transitions, 3494 flow. Second operand 7 states and 193 transitions. [2024-06-21 19:51:57,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 344 transitions, 4501 flow [2024-06-21 19:51:57,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 344 transitions, 4326 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-21 19:51:57,671 INFO L231 Difference]: Finished difference. Result has 131 places, 286 transitions, 3697 flow [2024-06-21 19:51:57,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3319, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3697, PETRI_PLACES=131, PETRI_TRANSITIONS=286} [2024-06-21 19:51:57,672 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 74 predicate places. [2024-06-21 19:51:57,672 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 286 transitions, 3697 flow [2024-06-21 19:51:57,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:51:57,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:51:57,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:51:57,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:51:57,672 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:51:57,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:51:57,673 INFO L85 PathProgramCache]: Analyzing trace with hash -436978576, now seen corresponding path program 2 times [2024-06-21 19:51:57,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:51:57,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179944912] [2024-06-21 19:51:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:51:57,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:51:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:52:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:52:01,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:52:01,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179944912] [2024-06-21 19:52:01,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179944912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:52:01,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:52:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:52:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101036444] [2024-06-21 19:52:01,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:52:01,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:52:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:52:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:52:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:52:01,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:52:01,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 286 transitions, 3697 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:01,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:52:01,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:52:01,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:52:04,718 INFO L124 PetriNetUnfolderBase]: 11155/15511 cut-off events. [2024-06-21 19:52:04,719 INFO L125 PetriNetUnfolderBase]: For 176066/176396 co-relation queries the response was YES. [2024-06-21 19:52:04,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80063 conditions, 15511 events. 11155/15511 cut-off events. For 176066/176396 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 85605 event pairs, 3987 based on Foata normal form. 61/15218 useless extension candidates. Maximal degree in co-relation 80001. Up to 14100 conditions per place. [2024-06-21 19:52:04,863 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 170 selfloop transitions, 131 changer transitions 0/342 dead transitions. [2024-06-21 19:52:04,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 342 transitions, 4597 flow [2024-06-21 19:52:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:52:04,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:52:04,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-21 19:52:04,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947089947089947 [2024-06-21 19:52:04,865 INFO L175 Difference]: Start difference. First operand has 131 places, 286 transitions, 3697 flow. Second operand 7 states and 187 transitions. [2024-06-21 19:52:04,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 342 transitions, 4597 flow [2024-06-21 19:52:05,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 342 transitions, 4436 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-21 19:52:05,092 INFO L231 Difference]: Finished difference. Result has 135 places, 289 transitions, 3857 flow [2024-06-21 19:52:05,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3542, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3857, PETRI_PLACES=135, PETRI_TRANSITIONS=289} [2024-06-21 19:52:05,092 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 78 predicate places. [2024-06-21 19:52:05,092 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 289 transitions, 3857 flow [2024-06-21 19:52:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:05,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:52:05,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:52:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:52:05,093 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:52:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:52:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -352960912, now seen corresponding path program 3 times [2024-06-21 19:52:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:52:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654637623] [2024-06-21 19:52:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:52:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:52:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:52:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:52:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:52:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654637623] [2024-06-21 19:52:08,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654637623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:52:08,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:52:08,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:52:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429878649] [2024-06-21 19:52:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:52:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:52:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:52:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:52:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:52:08,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:52:08,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 289 transitions, 3857 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:08,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:52:08,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:52:08,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:52:12,551 INFO L124 PetriNetUnfolderBase]: 11116/15463 cut-off events. [2024-06-21 19:52:12,551 INFO L125 PetriNetUnfolderBase]: For 190319/190586 co-relation queries the response was YES. [2024-06-21 19:52:12,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81507 conditions, 15463 events. 11116/15463 cut-off events. For 190319/190586 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 85385 event pairs, 4048 based on Foata normal form. 53/15177 useless extension candidates. Maximal degree in co-relation 81443. Up to 14432 conditions per place. [2024-06-21 19:52:12,663 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 245 selfloop transitions, 55 changer transitions 0/341 dead transitions. [2024-06-21 19:52:12,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 341 transitions, 4707 flow [2024-06-21 19:52:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:52:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:52:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-21 19:52:12,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 19:52:12,665 INFO L175 Difference]: Start difference. First operand has 135 places, 289 transitions, 3857 flow. Second operand 8 states and 192 transitions. [2024-06-21 19:52:12,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 341 transitions, 4707 flow [2024-06-21 19:52:12,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 341 transitions, 4457 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-21 19:52:12,903 INFO L231 Difference]: Finished difference. Result has 138 places, 291 transitions, 3762 flow [2024-06-21 19:52:12,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3762, PETRI_PLACES=138, PETRI_TRANSITIONS=291} [2024-06-21 19:52:12,904 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2024-06-21 19:52:12,904 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 291 transitions, 3762 flow [2024-06-21 19:52:12,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:12,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:52:12,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:52:12,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:52:12,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:52:12,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:52:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1958656408, now seen corresponding path program 4 times [2024-06-21 19:52:12,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:52:12,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640023594] [2024-06-21 19:52:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:52:12,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:52:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:52:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:52:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:52:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640023594] [2024-06-21 19:52:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640023594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:52:15,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:52:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:52:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949221942] [2024-06-21 19:52:15,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:52:15,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:52:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:52:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:52:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:52:16,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:52:16,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 291 transitions, 3762 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:16,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:52:16,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:52:16,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:52:19,555 INFO L124 PetriNetUnfolderBase]: 11615/16193 cut-off events. [2024-06-21 19:52:19,555 INFO L125 PetriNetUnfolderBase]: For 211467/211961 co-relation queries the response was YES. [2024-06-21 19:52:19,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86268 conditions, 16193 events. 11615/16193 cut-off events. For 211467/211961 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 90290 event pairs, 4071 based on Foata normal form. 124/15899 useless extension candidates. Maximal degree in co-relation 86203. Up to 14342 conditions per place. [2024-06-21 19:52:19,690 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 201 selfloop transitions, 141 changer transitions 0/383 dead transitions. [2024-06-21 19:52:19,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 383 transitions, 5118 flow [2024-06-21 19:52:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:52:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:52:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-06-21 19:52:19,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529100529100529 [2024-06-21 19:52:19,692 INFO L175 Difference]: Start difference. First operand has 138 places, 291 transitions, 3762 flow. Second operand 7 states and 209 transitions. [2024-06-21 19:52:19,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 383 transitions, 5118 flow [2024-06-21 19:52:20,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 383 transitions, 5002 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 19:52:20,076 INFO L231 Difference]: Finished difference. Result has 140 places, 314 transitions, 4273 flow [2024-06-21 19:52:20,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3655, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4273, PETRI_PLACES=140, PETRI_TRANSITIONS=314} [2024-06-21 19:52:20,076 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 83 predicate places. [2024-06-21 19:52:20,076 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 314 transitions, 4273 flow [2024-06-21 19:52:20,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:20,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:52:20,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:52:20,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:52:20,077 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:52:20,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:52:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2094734028, now seen corresponding path program 5 times [2024-06-21 19:52:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:52:20,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008506883] [2024-06-21 19:52:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:52:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:52:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:52:23,101 INFO 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 19:52:23,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:52:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008506883] [2024-06-21 19:52:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008506883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:52:23,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:52:23,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:52:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175930168] [2024-06-21 19:52:23,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:52:23,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:52:23,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:52:23,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:52:23,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:52:23,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:52:23,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 314 transitions, 4273 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:23,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:52:23,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:52:23,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:52:26,787 INFO L124 PetriNetUnfolderBase]: 11638/16229 cut-off events. [2024-06-21 19:52:26,788 INFO L125 PetriNetUnfolderBase]: For 243961/244687 co-relation queries the response was YES. [2024-06-21 19:52:26,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91199 conditions, 16229 events. 11638/16229 cut-off events. For 243961/244687 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 90406 event pairs, 4058 based on Foata normal form. 121/15932 useless extension candidates. Maximal degree in co-relation 91133. Up to 14784 conditions per place. [2024-06-21 19:52:26,940 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 206 selfloop transitions, 134 changer transitions 0/381 dead transitions. [2024-06-21 19:52:26,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 381 transitions, 5344 flow [2024-06-21 19:52:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:52:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:52:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-06-21 19:52:26,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-21 19:52:26,942 INFO L175 Difference]: Start difference. First operand has 140 places, 314 transitions, 4273 flow. Second operand 7 states and 203 transitions. [2024-06-21 19:52:26,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 381 transitions, 5344 flow [2024-06-21 19:52:27,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 381 transitions, 5185 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-21 19:52:27,333 INFO L231 Difference]: Finished difference. Result has 144 places, 319 transitions, 4483 flow [2024-06-21 19:52:27,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4118, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4483, PETRI_PLACES=144, PETRI_TRANSITIONS=319} [2024-06-21 19:52:27,334 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 87 predicate places. [2024-06-21 19:52:27,334 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 319 transitions, 4483 flow [2024-06-21 19:52:27,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:27,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:52:27,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:52:27,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:52:27,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:52:27,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:52:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1252994840, now seen corresponding path program 6 times [2024-06-21 19:52:27,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:52:27,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690227452] [2024-06-21 19:52:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:52:27,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:52:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:52:30,128 INFO 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 19:52:30,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:52:30,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690227452] [2024-06-21 19:52:30,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690227452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:52:30,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:52:30,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:52:30,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580379293] [2024-06-21 19:52:30,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:52:30,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:52:30,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:52:30,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:52:30,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:52:30,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:52:30,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 319 transitions, 4483 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:30,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:52:30,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:52:30,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:52:34,063 INFO L124 PetriNetUnfolderBase]: 12362/17259 cut-off events. [2024-06-21 19:52:34,064 INFO L125 PetriNetUnfolderBase]: For 271339/272455 co-relation queries the response was YES. [2024-06-21 19:52:34,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99302 conditions, 17259 events. 12362/17259 cut-off events. For 271339/272455 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 96719 event pairs, 3435 based on Foata normal form. 214/16963 useless extension candidates. Maximal degree in co-relation 99234. Up to 14458 conditions per place. [2024-06-21 19:52:34,194 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 190 selfloop transitions, 212 changer transitions 0/443 dead transitions. [2024-06-21 19:52:34,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 443 transitions, 6426 flow [2024-06-21 19:52:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:52:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:52:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-21 19:52:34,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423280423280423 [2024-06-21 19:52:34,196 INFO L175 Difference]: Start difference. First operand has 144 places, 319 transitions, 4483 flow. Second operand 7 states and 205 transitions. [2024-06-21 19:52:34,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 443 transitions, 6426 flow [2024-06-21 19:52:34,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 443 transitions, 6163 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-21 19:52:34,626 INFO L231 Difference]: Finished difference. Result has 148 places, 378 transitions, 5592 flow [2024-06-21 19:52:34,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5592, PETRI_PLACES=148, PETRI_TRANSITIONS=378} [2024-06-21 19:52:34,627 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 91 predicate places. [2024-06-21 19:52:34,627 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 378 transitions, 5592 flow [2024-06-21 19:52:34,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 19:52:34,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:52:34,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:52:34,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:52:34,628 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:52:34,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:52:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash 796674649, now seen corresponding path program 1 times [2024-06-21 19:52:34,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:52:34,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265103641] [2024-06-21 19:52:34,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:52:34,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:52:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:52:37,575 INFO 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 19:52:37,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:52:37,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265103641] [2024-06-21 19:52:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265103641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:52:37,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:52:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:52:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906932671] [2024-06-21 19:52:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:52:37,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:52:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:52:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:52:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:52:37,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-21 19:52:37,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 378 transitions, 5592 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:52:37,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:52:37,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-21 19:52:37,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:52:41,374 INFO L124 PetriNetUnfolderBase]: 12948/18054 cut-off events. [2024-06-21 19:52:41,374 INFO L125 PetriNetUnfolderBase]: For 299065/299273 co-relation queries the response was YES. [2024-06-21 19:52:41,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108119 conditions, 18054 events. 12948/18054 cut-off events. For 299065/299273 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 102564 event pairs, 5202 based on Foata normal form. 139/18157 useless extension candidates. Maximal degree in co-relation 108048. Up to 17468 conditions per place. [2024-06-21 19:52:41,532 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 383 selfloop transitions, 41 changer transitions 0/432 dead transitions. [2024-06-21 19:52:41,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 432 transitions, 6857 flow [2024-06-21 19:52:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:52:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:52:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-21 19:52:41,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-21 19:52:41,533 INFO L175 Difference]: Start difference. First operand has 148 places, 378 transitions, 5592 flow. Second operand 6 states and 157 transitions. [2024-06-21 19:52:41,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 432 transitions, 6857 flow [2024-06-21 19:52:41,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 432 transitions, 6685 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-21 19:52:41,942 INFO L231 Difference]: Finished difference. Result has 153 places, 401 transitions, 5870 flow [2024-06-21 19:52:41,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5433, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5870, PETRI_PLACES=153, PETRI_TRANSITIONS=401} [2024-06-21 19:52:41,942 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 96 predicate places. [2024-06-21 19:52:41,942 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 401 transitions, 5870 flow [2024-06-21 19:52:41,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:52:41,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:52:41,943 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 19:52:41,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 19:52:41,943 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:52:41,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:52:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash -749998108, now seen corresponding path program 1 times [2024-06-21 19:52:41,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:52:41,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861928087] [2024-06-21 19:52:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:52:41,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:52:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:52:45,688 INFO 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 19:52:45,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:52:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861928087] [2024-06-21 19:52:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861928087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:52:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:52:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:52:45,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363836591] [2024-06-21 19:52:45,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:52:45,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:52:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:52:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:52:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:52:45,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:52:45,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 401 transitions, 5870 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:52:45,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:52:45,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:52:45,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:52:51,197 INFO L124 PetriNetUnfolderBase]: 14207/19810 cut-off events. [2024-06-21 19:52:51,197 INFO L125 PetriNetUnfolderBase]: For 342043/342095 co-relation queries the response was YES. [2024-06-21 19:52:51,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120201 conditions, 19810 events. 14207/19810 cut-off events. For 342043/342095 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 112238 event pairs, 4218 based on Foata normal form. 62/19854 useless extension candidates. Maximal degree in co-relation 120126. Up to 16563 conditions per place. [2024-06-21 19:52:51,412 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 340 selfloop transitions, 183 changer transitions 0/529 dead transitions. [2024-06-21 19:52:51,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 529 transitions, 8234 flow [2024-06-21 19:52:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:52:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:52:51,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-21 19:52:51,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-21 19:52:51,424 INFO L175 Difference]: Start difference. First operand has 153 places, 401 transitions, 5870 flow. Second operand 8 states and 217 transitions. [2024-06-21 19:52:51,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 529 transitions, 8234 flow [2024-06-21 19:52:52,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 529 transitions, 8111 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-21 19:52:52,018 INFO L231 Difference]: Finished difference. Result has 161 places, 440 transitions, 6918 flow [2024-06-21 19:52:52,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5757, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6918, PETRI_PLACES=161, PETRI_TRANSITIONS=440} [2024-06-21 19:52:52,019 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 104 predicate places. [2024-06-21 19:52:52,019 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 440 transitions, 6918 flow [2024-06-21 19:52:52,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:52:52,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:52:52,019 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 19:52:52,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 19:52:52,020 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:52:52,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:52:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1808302832, now seen corresponding path program 2 times [2024-06-21 19:52:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:52:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944563231] [2024-06-21 19:52:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:52:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:52:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:52:55,804 INFO 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 19:52:55,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:52:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944563231] [2024-06-21 19:52:55,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944563231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:52:55,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:52:55,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:52:55,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244314370] [2024-06-21 19:52:55,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:52:55,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:52:55,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:52:55,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:52:55,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:52:55,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:52:55,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 440 transitions, 6918 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:52:55,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:52:55,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:52:55,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:53:00,873 INFO L124 PetriNetUnfolderBase]: 14425/20160 cut-off events. [2024-06-21 19:53:00,873 INFO L125 PetriNetUnfolderBase]: For 382215/382267 co-relation queries the response was YES. [2024-06-21 19:53:00,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126164 conditions, 20160 events. 14425/20160 cut-off events. For 382215/382267 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 114745 event pairs, 4966 based on Foata normal form. 70/20212 useless extension candidates. Maximal degree in co-relation 126085. Up to 18435 conditions per place. [2024-06-21 19:53:01,202 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 344 selfloop transitions, 160 changer transitions 0/510 dead transitions. [2024-06-21 19:53:01,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 510 transitions, 8356 flow [2024-06-21 19:53:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:53:01,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:53:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-21 19:53:01,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837962962962963 [2024-06-21 19:53:01,203 INFO L175 Difference]: Start difference. First operand has 161 places, 440 transitions, 6918 flow. Second operand 8 states and 209 transitions. [2024-06-21 19:53:01,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 510 transitions, 8356 flow [2024-06-21 19:53:01,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 510 transitions, 8103 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-21 19:53:01,761 INFO L231 Difference]: Finished difference. Result has 166 places, 442 transitions, 7039 flow [2024-06-21 19:53:01,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6669, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7039, PETRI_PLACES=166, PETRI_TRANSITIONS=442} [2024-06-21 19:53:01,761 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 109 predicate places. [2024-06-21 19:53:01,761 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 442 transitions, 7039 flow [2024-06-21 19:53:01,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:53:01,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:53:01,761 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 19:53:01,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 19:53:01,762 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:53:01,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:53:01,762 INFO L85 PathProgramCache]: Analyzing trace with hash -748124158, now seen corresponding path program 3 times [2024-06-21 19:53:01,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:53:01,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318243336] [2024-06-21 19:53:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:53:01,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:53:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:53:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:53:05,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:53:05,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318243336] [2024-06-21 19:53:05,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318243336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:53:05,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:53:05,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:53:05,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034223795] [2024-06-21 19:53:05,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:53:05,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:53:05,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:53:05,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:53:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:53:05,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:53:05,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 442 transitions, 7039 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:53:05,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:53:05,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:53:05,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:53:11,015 INFO L124 PetriNetUnfolderBase]: 14582/20387 cut-off events. [2024-06-21 19:53:11,015 INFO L125 PetriNetUnfolderBase]: For 402840/402892 co-relation queries the response was YES. [2024-06-21 19:53:11,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128879 conditions, 20387 events. 14582/20387 cut-off events. For 402840/402892 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 116441 event pairs, 4845 based on Foata normal form. 62/20431 useless extension candidates. Maximal degree in co-relation 128798. Up to 18163 conditions per place. [2024-06-21 19:53:11,196 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 350 selfloop transitions, 169 changer transitions 0/525 dead transitions. [2024-06-21 19:53:11,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 525 transitions, 8650 flow [2024-06-21 19:53:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:53:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:53:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-21 19:53:11,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-21 19:53:11,197 INFO L175 Difference]: Start difference. First operand has 166 places, 442 transitions, 7039 flow. Second operand 8 states and 212 transitions. [2024-06-21 19:53:11,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 525 transitions, 8650 flow [2024-06-21 19:53:11,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 525 transitions, 8302 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-21 19:53:11,976 INFO L231 Difference]: Finished difference. Result has 170 places, 451 transitions, 7229 flow [2024-06-21 19:53:11,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6691, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7229, PETRI_PLACES=170, PETRI_TRANSITIONS=451} [2024-06-21 19:53:11,977 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 113 predicate places. [2024-06-21 19:53:11,977 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 451 transitions, 7229 flow [2024-06-21 19:53:11,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:53:11,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:53:11,977 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 19:53:11,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 19:53:11,978 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:53:11,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:53:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1948625486, now seen corresponding path program 4 times [2024-06-21 19:53:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:53:11,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619995762] [2024-06-21 19:53:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:53:11,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:53:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:53:16,692 INFO 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 19:53:16,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:53:16,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619995762] [2024-06-21 19:53:16,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619995762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:53:16,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:53:16,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:53:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738907129] [2024-06-21 19:53:16,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:53:16,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:53:16,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:53:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:53:16,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:53:16,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:53:16,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 451 transitions, 7229 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:53:16,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:53:16,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:53:16,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:53:22,418 INFO L124 PetriNetUnfolderBase]: 14800/20714 cut-off events. [2024-06-21 19:53:22,419 INFO L125 PetriNetUnfolderBase]: For 434977/435011 co-relation queries the response was YES. [2024-06-21 19:53:22,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132358 conditions, 20714 events. 14800/20714 cut-off events. For 434977/435011 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 118968 event pairs, 5201 based on Foata normal form. 62/20772 useless extension candidates. Maximal degree in co-relation 132275. Up to 19431 conditions per place. [2024-06-21 19:53:22,591 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 448 selfloop transitions, 87 changer transitions 0/541 dead transitions. [2024-06-21 19:53:22,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 541 transitions, 8831 flow [2024-06-21 19:53:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:53:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:53:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-06-21 19:53:22,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-21 19:53:22,592 INFO L175 Difference]: Start difference. First operand has 170 places, 451 transitions, 7229 flow. Second operand 11 states and 260 transitions. [2024-06-21 19:53:22,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 541 transitions, 8831 flow [2024-06-21 19:53:23,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 541 transitions, 8622 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-21 19:53:23,271 INFO L231 Difference]: Finished difference. Result has 178 places, 457 transitions, 7336 flow [2024-06-21 19:53:23,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7024, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7336, PETRI_PLACES=178, PETRI_TRANSITIONS=457} [2024-06-21 19:53:23,272 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 121 predicate places. [2024-06-21 19:53:23,272 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 457 transitions, 7336 flow [2024-06-21 19:53:23,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:53:23,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:53:23,272 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 19:53:23,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 19:53:23,272 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:53:23,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:53:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1946830982, now seen corresponding path program 5 times [2024-06-21 19:53:23,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:53:23,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452237773] [2024-06-21 19:53:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:53:23,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:53:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:53:27,786 INFO 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 19:53:27,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:53:27,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452237773] [2024-06-21 19:53:27,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452237773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:53:27,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:53:27,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:53:27,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300236566] [2024-06-21 19:53:27,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:53:27,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:53:27,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:53:27,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:53:27,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:53:27,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-21 19:53:27,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 457 transitions, 7336 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:53:27,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:53:27,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-21 19:53:27,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:53:33,203 INFO L124 PetriNetUnfolderBase]: 14940/20946 cut-off events. [2024-06-21 19:53:33,203 INFO L125 PetriNetUnfolderBase]: For 457655/457689 co-relation queries the response was YES. [2024-06-21 19:53:33,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135257 conditions, 20946 events. 14940/20946 cut-off events. For 457655/457689 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 120925 event pairs, 5233 based on Foata normal form. 62/21004 useless extension candidates. Maximal degree in co-relation 135171. Up to 19643 conditions per place. [2024-06-21 19:53:33,374 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 435 selfloop transitions, 84 changer transitions 0/525 dead transitions. [2024-06-21 19:53:33,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 525 transitions, 8780 flow [2024-06-21 19:53:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:53:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:53:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-21 19:53:33,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-06-21 19:53:33,375 INFO L175 Difference]: Start difference. First operand has 178 places, 457 transitions, 7336 flow. Second operand 9 states and 213 transitions. [2024-06-21 19:53:33,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 525 transitions, 8780 flow [2024-06-21 19:53:34,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 525 transitions, 8598 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 19:53:34,112 INFO L231 Difference]: Finished difference. Result has 179 places, 459 transitions, 7380 flow [2024-06-21 19:53:34,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7154, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7380, PETRI_PLACES=179, PETRI_TRANSITIONS=459} [2024-06-21 19:53:34,112 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 122 predicate places. [2024-06-21 19:53:34,112 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 459 transitions, 7380 flow [2024-06-21 19:53:34,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 19:53:34,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:53:34,113 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 19:53:34,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 19:53:34,113 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:53:34,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:53:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1946683112, now seen corresponding path program 6 times [2024-06-21 19:53:34,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:53:34,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420755363] [2024-06-21 19:53:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:53:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:53:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat