./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.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/mix055_tso.oepc.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/mix055_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix055_tso.oepc.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 19:11:11,884 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:11:11,941 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:11:11,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:11:11,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:11:11,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:11:11,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:11:11,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:11:11,976 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:11:11,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:11:11,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:11:11,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:11:11,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:11:11,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:11:11,982 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:11:11,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:11:11,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:11:11,982 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:11:11,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:11:11,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:11:11,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:11:11,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:11:11,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:11:11,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:11:11,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:11:11,984 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:11:11,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:11:11,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:11:11,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:11:11,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:11:11,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:11:11,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:11:11,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:11:11,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:11:11,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:11:11,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:11:11,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:11:11,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:11:11,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:11:11,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:11:11,989 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:11:11,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:11:11,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:11:11,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:11:12,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:11:12,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:11:12,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:11:12,236 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:11:12,236 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:11:12,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i [2024-06-21 19:11:13,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:11:13,521 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:11:13,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i [2024-06-21 19:11:13,548 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd78d93b3/325b27ff97e74aa0b25b0039b170a9c6/FLAGac10c5262 [2024-06-21 19:11:13,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd78d93b3/325b27ff97e74aa0b25b0039b170a9c6 [2024-06-21 19:11:13,567 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:11:13,567 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:11:13,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix055_tso.oepc.yml/witness.yml [2024-06-21 19:11:13,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:11:13,658 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:11:13,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:11:13,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:11:13,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:11:13,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:11:13" (1/2) ... [2024-06-21 19:11:13,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789f9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:11:13, skipping insertion in model container [2024-06-21 19:11:13,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:11:13" (1/2) ... [2024-06-21 19:11:13,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2db4ff23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:11:13, skipping insertion in model container [2024-06-21 19:11:13,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:11:13" (2/2) ... [2024-06-21 19:11:13,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789f9fc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:13, skipping insertion in model container [2024-06-21 19:11:13,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:11:13" (2/2) ... [2024-06-21 19:11:13,668 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:11:13,697 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:11:13,698 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EAX) - (long long )a >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 19:11:13,698 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EAX) - (long long )a >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 19:11:13,698 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EAX) - (long long )a >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 19:11:13,698 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EAX) - (long long )a >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 19:11:13,698 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:11:13,699 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-21 19:11:13,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:11:14,001 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:11:14,025 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 19:11:14,221 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:11:14,270 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:11:14,271 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14 WrapperNode [2024-06-21 19:11:14,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:11:14,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:11:14,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:11:14,272 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:11:14,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,346 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 156 [2024-06-21 19:11:14,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:11:14,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:11:14,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:11:14,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:11:14,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,375 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-21 19:11:14,375 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,375 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:11:14,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:11:14,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:11:14,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:11:14,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (1/1) ... [2024-06-21 19:11:14,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:11:14,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:11:14,474 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 19:11:14,519 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 19:11:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:11:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:11:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:11:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:11:14,534 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:11:14,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:11:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 19:11:14,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 19:11:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 19:11:14,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 19:11:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:11:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:11:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:11:14,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:11:14,538 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 19:11:14,685 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:11:14,687 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:11:15,056 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:11:15,056 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:11:15,210 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:11:15,211 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:11:15,211 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:11:15 BoogieIcfgContainer [2024-06-21 19:11:15,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:11:15,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:11:15,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:11:15,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:11:15,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:11:13" (1/4) ... [2024-06-21 19:11:15,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a77bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:11:15, skipping insertion in model container [2024-06-21 19:11:15,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:11:13" (2/4) ... [2024-06-21 19:11:15,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a77bf8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:11:15, skipping insertion in model container [2024-06-21 19:11:15,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:11:14" (3/4) ... [2024-06-21 19:11:15,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a77bf8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:11:15, skipping insertion in model container [2024-06-21 19:11:15,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:11:15" (4/4) ... [2024-06-21 19:11:15,221 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_tso.oepc.i [2024-06-21 19:11:15,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:11:15,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 19:11:15,234 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:11:15,304 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:11:15,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-21 19:11:15,365 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-21 19:11:15,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:11:15,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:11:15,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-21 19:11:15,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-21 19:11:15,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:11:15,388 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;@4a15463c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:11:15,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 19:11:15,393 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:11:15,393 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 19:11:15,393 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:11:15,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:15,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:11:15,394 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 19:11:15,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:15,402 INFO L85 PathProgramCache]: Analyzing trace with hash 391382252, now seen corresponding path program 1 times [2024-06-21 19:11:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:15,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811340826] [2024-06-21 19:11:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:16,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:16,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811340826] [2024-06-21 19:11:16,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811340826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:16,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:11:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994088907] [2024-06-21 19:11:16,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:16,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:11:16,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:11:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:11:16,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-21 19:11:16,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:11:16,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:16,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-21 19:11:16,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:18,126 INFO L124 PetriNetUnfolderBase]: 9903/13809 cut-off events. [2024-06-21 19:11:18,126 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-21 19:11:18,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27713 conditions, 13809 events. 9903/13809 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 75149 event pairs, 7667 based on Foata normal form. 1/13594 useless extension candidates. Maximal degree in co-relation 27700. Up to 13453 conditions per place. [2024-06-21 19:11:18,208 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 43 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-21 19:11:18,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 227 flow [2024-06-21 19:11:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:11:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:11:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-21 19:11:18,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2024-06-21 19:11:18,218 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 91 transitions. [2024-06-21 19:11:18,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 227 flow [2024-06-21 19:11:18,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 19:11:18,223 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-21 19:11:18,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-21 19:11:18,226 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-21 19:11:18,227 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-21 19:11:18,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:11:18,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:18,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:18,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:11:18,228 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 19:11:18,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1838756085, now seen corresponding path program 1 times [2024-06-21 19:11:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:18,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782803440] [2024-06-21 19:11:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:18,936 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 19:11:18,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:18,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782803440] [2024-06-21 19:11:18,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782803440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:18,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:18,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:11:18,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472073123] [2024-06-21 19:11:18,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:18,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:11:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:18,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:11:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:11:18,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-21 19:11:18,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 19:11:18,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:18,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-21 19:11:18,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:20,604 INFO L124 PetriNetUnfolderBase]: 11585/15735 cut-off events. [2024-06-21 19:11:20,604 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-21 19:11:20,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35854 conditions, 15735 events. 11585/15735 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81892 event pairs, 8249 based on Foata normal form. 4/15736 useless extension candidates. Maximal degree in co-relation 35842. Up to 15650 conditions per place. [2024-06-21 19:11:20,686 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 54 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-21 19:11:20,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 321 flow [2024-06-21 19:11:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:11:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:11:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-06-21 19:11:20,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2024-06-21 19:11:20,689 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 115 transitions. [2024-06-21 19:11:20,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 321 flow [2024-06-21 19:11:20,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:11:20,691 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-21 19:11:20,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-21 19:11:20,692 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-21 19:11:20,692 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-21 19:11:20,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 19:11:20,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:20,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:20,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:11:20,693 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 19:11:20,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:20,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1166863045, now seen corresponding path program 1 times [2024-06-21 19:11:20,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:20,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129684617] [2024-06-21 19:11:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:20,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:21,422 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 19:11:21,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129684617] [2024-06-21 19:11:21,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129684617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:21,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:21,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:11:21,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655703356] [2024-06-21 19:11:21,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:21,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:11:21,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:21,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:11:21,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:11:21,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-21 19:11:21,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 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 19:11:21,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:21,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-21 19:11:21,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:23,105 INFO L124 PetriNetUnfolderBase]: 11565/15709 cut-off events. [2024-06-21 19:11:23,106 INFO L125 PetriNetUnfolderBase]: For 8281/8281 co-relation queries the response was YES. [2024-06-21 19:11:23,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39745 conditions, 15709 events. 11565/15709 cut-off events. For 8281/8281 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81863 event pairs, 6611 based on Foata normal form. 8/15714 useless extension candidates. Maximal degree in co-relation 39731. Up to 15580 conditions per place. [2024-06-21 19:11:23,195 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 65 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-21 19:11:23,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 433 flow [2024-06-21 19:11:23,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:11:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:11:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-06-21 19:11:23,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568627450980392 [2024-06-21 19:11:23,197 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 142 transitions. [2024-06-21 19:11:23,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 433 flow [2024-06-21 19:11:23,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 414 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 19:11:23,201 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 225 flow [2024-06-21 19:11:23,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-21 19:11:23,201 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-06-21 19:11:23,202 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 225 flow [2024-06-21 19:11:23,202 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 19:11:23,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:23,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:23,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:11:23,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:11:23,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash 489977308, now seen corresponding path program 1 times [2024-06-21 19:11:23,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:23,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989144489] [2024-06-21 19:11:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:24,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989144489] [2024-06-21 19:11:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989144489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:24,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:24,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:11:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501261593] [2024-06-21 19:11:24,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:24,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:11:24,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:11:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:11:24,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-21 19:11:24,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:11:24,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:24,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-21 19:11:24,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:26,189 INFO L124 PetriNetUnfolderBase]: 11549/15683 cut-off events. [2024-06-21 19:11:26,190 INFO L125 PetriNetUnfolderBase]: For 16071/16071 co-relation queries the response was YES. [2024-06-21 19:11:26,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43595 conditions, 15683 events. 11549/15683 cut-off events. For 16071/16071 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81489 event pairs, 5646 based on Foata normal form. 8/15688 useless extension candidates. Maximal degree in co-relation 43580. Up to 15514 conditions per place. [2024-06-21 19:11:26,300 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 72 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-21 19:11:26,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 517 flow [2024-06-21 19:11:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:11:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:11:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-21 19:11:26,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-06-21 19:11:26,304 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 225 flow. Second operand 6 states and 164 transitions. [2024-06-21 19:11:26,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 517 flow [2024-06-21 19:11:26,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 484 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 19:11:26,311 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 256 flow [2024-06-21 19:11:26,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-21 19:11:26,313 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-21 19:11:26,313 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 256 flow [2024-06-21 19:11:26,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:11:26,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:26,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:26,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:11:26,313 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 19:11:26,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash -575667842, now seen corresponding path program 1 times [2024-06-21 19:11:26,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:26,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417795220] [2024-06-21 19:11:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:26,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:27,161 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 19:11:27,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:27,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417795220] [2024-06-21 19:11:27,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417795220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:27,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:27,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:11:27,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694286152] [2024-06-21 19:11:27,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:27,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:11:27,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:27,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:11:27,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:11:27,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 19:11:27,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:11:27,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:27,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 19:11:27,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:28,498 INFO L124 PetriNetUnfolderBase]: 9848/13723 cut-off events. [2024-06-21 19:11:28,498 INFO L125 PetriNetUnfolderBase]: For 21341/21341 co-relation queries the response was YES. [2024-06-21 19:11:28,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40757 conditions, 13723 events. 9848/13723 cut-off events. For 21341/21341 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 74274 event pairs, 5737 based on Foata normal form. 3/13723 useless extension candidates. Maximal degree in co-relation 40740. Up to 13360 conditions per place. [2024-06-21 19:11:28,574 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 59 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-21 19:11:28,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 476 flow [2024-06-21 19:11:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:11:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:11:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-21 19:11:28,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-06-21 19:11:28,576 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 256 flow. Second operand 6 states and 129 transitions. [2024-06-21 19:11:28,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 476 flow [2024-06-21 19:11:28,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 428 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 19:11:28,595 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 292 flow [2024-06-21 19:11:28,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-06-21 19:11:28,595 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-21 19:11:28,596 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 292 flow [2024-06-21 19:11:28,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:11:28,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:28,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:28,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:11:28,596 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 19:11:28,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:28,597 INFO L85 PathProgramCache]: Analyzing trace with hash -337716759, now seen corresponding path program 1 times [2024-06-21 19:11:28,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:28,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897060964] [2024-06-21 19:11:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:28,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:29,518 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 19:11:29,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:29,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897060964] [2024-06-21 19:11:29,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897060964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:29,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:29,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:11:29,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119120337] [2024-06-21 19:11:29,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:29,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:11:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:11:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:11:29,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:11:29,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 19:11:29,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:29,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:11:29,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:31,134 INFO L124 PetriNetUnfolderBase]: 11585/15736 cut-off events. [2024-06-21 19:11:31,134 INFO L125 PetriNetUnfolderBase]: For 36269/36269 co-relation queries the response was YES. [2024-06-21 19:11:31,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50684 conditions, 15736 events. 11585/15736 cut-off events. For 36269/36269 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 81282 event pairs, 6743 based on Foata normal form. 3/15734 useless extension candidates. Maximal degree in co-relation 50664. Up to 15625 conditions per place. [2024-06-21 19:11:31,218 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 69 selfloop transitions, 21 changer transitions 0/95 dead transitions. [2024-06-21 19:11:31,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 95 transitions, 596 flow [2024-06-21 19:11:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:11:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:11:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-21 19:11:31,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-21 19:11:31,223 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 292 flow. Second operand 6 states and 138 transitions. [2024-06-21 19:11:31,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 95 transitions, 596 flow [2024-06-21 19:11:31,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 95 transitions, 561 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-21 19:11:31,229 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 384 flow [2024-06-21 19:11:31,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-06-21 19:11:31,232 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-21 19:11:31,232 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 384 flow [2024-06-21 19:11:31,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 19:11:31,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:31,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:31,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:11:31,233 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 19:11:31,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash -315223779, now seen corresponding path program 2 times [2024-06-21 19:11:31,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:31,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604204756] [2024-06-21 19:11:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:31,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604204756] [2024-06-21 19:11:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604204756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:32,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:32,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:11:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389279201] [2024-06-21 19:11:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:11:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:11:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:11:32,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:11:32,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 19:11:32,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:32,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:11:32,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:33,855 INFO L124 PetriNetUnfolderBase]: 11607/15776 cut-off events. [2024-06-21 19:11:33,855 INFO L125 PetriNetUnfolderBase]: For 49220/49232 co-relation queries the response was YES. [2024-06-21 19:11:33,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54760 conditions, 15776 events. 11607/15776 cut-off events. For 49220/49232 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 81568 event pairs, 6701 based on Foata normal form. 11/15780 useless extension candidates. Maximal degree in co-relation 54738. Up to 15607 conditions per place. [2024-06-21 19:11:33,950 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 68 selfloop transitions, 32 changer transitions 0/105 dead transitions. [2024-06-21 19:11:33,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 105 transitions, 766 flow [2024-06-21 19:11:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:11:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:11:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-21 19:11:33,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42296918767507 [2024-06-21 19:11:33,953 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 384 flow. Second operand 7 states and 151 transitions. [2024-06-21 19:11:33,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 105 transitions, 766 flow [2024-06-21 19:11:33,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 724 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-21 19:11:33,961 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 505 flow [2024-06-21 19:11:33,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=505, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-06-21 19:11:33,962 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-21 19:11:33,962 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 505 flow [2024-06-21 19:11:33,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 19:11:33,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:33,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:33,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:11:33,963 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 19:11:33,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:33,963 INFO L85 PathProgramCache]: Analyzing trace with hash -133507043, now seen corresponding path program 3 times [2024-06-21 19:11:33,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:33,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630833901] [2024-06-21 19:11:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:33,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:34,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:34,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630833901] [2024-06-21 19:11:34,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630833901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:34,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:34,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:11:34,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565881710] [2024-06-21 19:11:34,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:34,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:11:34,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:11:34,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:11:34,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:11:34,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 505 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 19:11:34,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:34,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:11:34,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:36,451 INFO L124 PetriNetUnfolderBase]: 11634/15818 cut-off events. [2024-06-21 19:11:36,452 INFO L125 PetriNetUnfolderBase]: For 65764/65764 co-relation queries the response was YES. [2024-06-21 19:11:36,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58774 conditions, 15818 events. 11634/15818 cut-off events. For 65764/65764 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 81644 event pairs, 6692 based on Foata normal form. 3/15818 useless extension candidates. Maximal degree in co-relation 58749. Up to 15675 conditions per place. [2024-06-21 19:11:36,574 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 84 selfloop transitions, 31 changer transitions 0/120 dead transitions. [2024-06-21 19:11:36,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 120 transitions, 879 flow [2024-06-21 19:11:36,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:11:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:11:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-21 19:11:36,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44537815126050423 [2024-06-21 19:11:36,575 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 505 flow. Second operand 7 states and 159 transitions. [2024-06-21 19:11:36,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 120 transitions, 879 flow [2024-06-21 19:11:36,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 823 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-21 19:11:36,594 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 609 flow [2024-06-21 19:11:36,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=609, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2024-06-21 19:11:36,594 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-21 19:11:36,595 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 609 flow [2024-06-21 19:11:36,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 19:11:36,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:36,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:36,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:11:36,595 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 19:11:36,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:36,596 INFO L85 PathProgramCache]: Analyzing trace with hash 141403759, now seen corresponding path program 1 times [2024-06-21 19:11:36,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:36,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936729103] [2024-06-21 19:11:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:36,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:37,941 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 19:11:37,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:37,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936729103] [2024-06-21 19:11:37,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936729103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:37,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:37,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:11:37,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988412103] [2024-06-21 19:11:37,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:37,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:11:37,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:37,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:11:37,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:11:38,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-21 19:11:38,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 609 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:11:38,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:38,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-21 19:11:38,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:39,979 INFO L124 PetriNetUnfolderBase]: 14149/19106 cut-off events. [2024-06-21 19:11:39,980 INFO L125 PetriNetUnfolderBase]: For 88397/88397 co-relation queries the response was YES. [2024-06-21 19:11:40,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71648 conditions, 19106 events. 14149/19106 cut-off events. For 88397/88397 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 97363 event pairs, 8131 based on Foata normal form. 3/19106 useless extension candidates. Maximal degree in co-relation 71620. Up to 19034 conditions per place. [2024-06-21 19:11:40,090 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 103 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-21 19:11:40,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 127 transitions, 1010 flow [2024-06-21 19:11:40,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:11:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:11:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-21 19:11:40,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2024-06-21 19:11:40,093 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 609 flow. Second operand 7 states and 150 transitions. [2024-06-21 19:11:40,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 127 transitions, 1010 flow [2024-06-21 19:11:40,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 127 transitions, 930 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 19:11:40,121 INFO L231 Difference]: Finished difference. Result has 82 places, 97 transitions, 656 flow [2024-06-21 19:11:40,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=656, PETRI_PLACES=82, PETRI_TRANSITIONS=97} [2024-06-21 19:11:40,122 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-21 19:11:40,122 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 97 transitions, 656 flow [2024-06-21 19:11:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:11:40,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:40,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:40,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:11:40,124 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 19:11:40,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash -88946601, now seen corresponding path program 1 times [2024-06-21 19:11:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:40,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714840111] [2024-06-21 19:11:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:40,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:41,060 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 19:11:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714840111] [2024-06-21 19:11:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714840111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:41,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:41,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:11:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821789765] [2024-06-21 19:11:41,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:41,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:11:41,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:11:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:11:41,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:11:41,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 97 transitions, 656 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:41,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:41,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:11:41,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:43,576 INFO L124 PetriNetUnfolderBase]: 13963/18954 cut-off events. [2024-06-21 19:11:43,576 INFO L125 PetriNetUnfolderBase]: For 111927/111927 co-relation queries the response was YES. [2024-06-21 19:11:43,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77352 conditions, 18954 events. 13963/18954 cut-off events. For 111927/111927 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 99607 event pairs, 6792 based on Foata normal form. 3/18948 useless extension candidates. Maximal degree in co-relation 77323. Up to 18719 conditions per place. [2024-06-21 19:11:43,715 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 102 selfloop transitions, 37 changer transitions 0/145 dead transitions. [2024-06-21 19:11:43,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 145 transitions, 1128 flow [2024-06-21 19:11:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:11:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:11:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-21 19:11:43,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2024-06-21 19:11:43,717 INFO L175 Difference]: Start difference. First operand has 82 places, 97 transitions, 656 flow. Second operand 7 states and 165 transitions. [2024-06-21 19:11:43,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 145 transitions, 1128 flow [2024-06-21 19:11:43,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 145 transitions, 1063 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-21 19:11:43,760 INFO L231 Difference]: Finished difference. Result has 87 places, 111 transitions, 787 flow [2024-06-21 19:11:43,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=787, PETRI_PLACES=87, PETRI_TRANSITIONS=111} [2024-06-21 19:11:43,761 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2024-06-21 19:11:43,761 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 111 transitions, 787 flow [2024-06-21 19:11:43,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:43,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:43,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:43,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:11:43,761 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 19:11:43,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash 78902569, now seen corresponding path program 2 times [2024-06-21 19:11:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:43,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135830899] [2024-06-21 19:11:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:11:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:44,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135830899] [2024-06-21 19:11:44,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135830899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:44,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:44,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:11:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380194729] [2024-06-21 19:11:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:44,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:11:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:11:44,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:11:44,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:11:44,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 111 transitions, 787 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:44,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:44,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:11:44,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:46,852 INFO L124 PetriNetUnfolderBase]: 14030/19048 cut-off events. [2024-06-21 19:11:46,853 INFO L125 PetriNetUnfolderBase]: For 140035/140035 co-relation queries the response was YES. [2024-06-21 19:11:46,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83930 conditions, 19048 events. 14030/19048 cut-off events. For 140035/140035 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 100245 event pairs, 6656 based on Foata normal form. 3/19042 useless extension candidates. Maximal degree in co-relation 83898. Up to 18748 conditions per place. [2024-06-21 19:11:47,013 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 99 selfloop transitions, 50 changer transitions 0/155 dead transitions. [2024-06-21 19:11:47,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 155 transitions, 1371 flow [2024-06-21 19:11:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:11:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:11:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-21 19:11:47,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-21 19:11:47,015 INFO L175 Difference]: Start difference. First operand has 87 places, 111 transitions, 787 flow. Second operand 7 states and 170 transitions. [2024-06-21 19:11:47,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 155 transitions, 1371 flow [2024-06-21 19:11:47,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 155 transitions, 1303 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-21 19:11:47,062 INFO L231 Difference]: Finished difference. Result has 94 places, 119 transitions, 971 flow [2024-06-21 19:11:47,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=971, PETRI_PLACES=94, PETRI_TRANSITIONS=119} [2024-06-21 19:11:47,062 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-21 19:11:47,062 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 119 transitions, 971 flow [2024-06-21 19:11:47,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:47,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:47,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:47,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:11:47,063 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 19:11:47,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash 85331659, now seen corresponding path program 3 times [2024-06-21 19:11:47,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:47,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307068439] [2024-06-21 19:11:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:47,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:48,201 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 19:11:48,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:48,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307068439] [2024-06-21 19:11:48,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307068439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:48,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:48,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:11:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560481206] [2024-06-21 19:11:48,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:48,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:11:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:48,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:11:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:11:48,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:11:48,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 119 transitions, 971 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:48,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:48,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:11:48,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:50,438 INFO L124 PetriNetUnfolderBase]: 14077/19133 cut-off events. [2024-06-21 19:11:50,438 INFO L125 PetriNetUnfolderBase]: For 175602/175614 co-relation queries the response was YES. [2024-06-21 19:11:50,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90423 conditions, 19133 events. 14077/19133 cut-off events. For 175602/175614 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 100903 event pairs, 6530 based on Foata normal form. 14/19130 useless extension candidates. Maximal degree in co-relation 90387. Up to 18677 conditions per place. [2024-06-21 19:11:50,615 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 87 selfloop transitions, 70 changer transitions 0/163 dead transitions. [2024-06-21 19:11:50,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 163 transitions, 1601 flow [2024-06-21 19:11:50,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:11:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:11:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-21 19:11:50,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-06-21 19:11:50,628 INFO L175 Difference]: Start difference. First operand has 94 places, 119 transitions, 971 flow. Second operand 7 states and 168 transitions. [2024-06-21 19:11:50,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 163 transitions, 1601 flow [2024-06-21 19:11:50,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 163 transitions, 1518 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-21 19:11:50,709 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1225 flow [2024-06-21 19:11:50,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1225, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2024-06-21 19:11:50,711 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-21 19:11:50,711 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1225 flow [2024-06-21 19:11:50,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:50,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:50,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:50,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:11:50,712 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 19:11:50,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:50,713 INFO L85 PathProgramCache]: Analyzing trace with hash -485863037, now seen corresponding path program 4 times [2024-06-21 19:11:50,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:50,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080809367] [2024-06-21 19:11:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:50,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:51,526 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 19:11:51,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:51,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080809367] [2024-06-21 19:11:51,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080809367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:51,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:51,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:11:51,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154198229] [2024-06-21 19:11:51,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:51,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:11:51,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:11:51,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:11:51,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:11:51,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1225 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:51,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:51,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:11:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:53,795 INFO L124 PetriNetUnfolderBase]: 14158/19253 cut-off events. [2024-06-21 19:11:53,795 INFO L125 PetriNetUnfolderBase]: For 218393/218397 co-relation queries the response was YES. [2024-06-21 19:11:53,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98333 conditions, 19253 events. 14158/19253 cut-off events. For 218393/218397 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 101759 event pairs, 6513 based on Foata normal form. 7/19257 useless extension candidates. Maximal degree in co-relation 98294. Up to 18947 conditions per place. [2024-06-21 19:11:53,969 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 130 selfloop transitions, 55 changer transitions 0/191 dead transitions. [2024-06-21 19:11:53,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 191 transitions, 1962 flow [2024-06-21 19:11:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:11:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:11:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-21 19:11:53,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2024-06-21 19:11:53,971 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1225 flow. Second operand 7 states and 174 transitions. [2024-06-21 19:11:53,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 191 transitions, 1962 flow [2024-06-21 19:11:54,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 191 transitions, 1844 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-21 19:11:54,082 INFO L231 Difference]: Finished difference. Result has 104 places, 151 transitions, 1515 flow [2024-06-21 19:11:54,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1515, PETRI_PLACES=104, PETRI_TRANSITIONS=151} [2024-06-21 19:11:54,083 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-21 19:11:54,083 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 151 transitions, 1515 flow [2024-06-21 19:11:54,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:54,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:54,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:54,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:11:54,084 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 19:11:54,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:54,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1328408757, now seen corresponding path program 5 times [2024-06-21 19:11:54,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:54,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971847810] [2024-06-21 19:11:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:54,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:54,928 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 19:11:54,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971847810] [2024-06-21 19:11:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971847810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:54,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:11:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331885287] [2024-06-21 19:11:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:54,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:11:54,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:54,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:11:54,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:11:54,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:11:54,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 151 transitions, 1515 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:54,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:54,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:11:54,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:11:57,438 INFO L124 PetriNetUnfolderBase]: 14290/19449 cut-off events. [2024-06-21 19:11:57,439 INFO L125 PetriNetUnfolderBase]: For 223802/223814 co-relation queries the response was YES. [2024-06-21 19:11:57,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98898 conditions, 19449 events. 14290/19449 cut-off events. For 223802/223814 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 102966 event pairs, 6513 based on Foata normal form. 15/19461 useless extension candidates. Maximal degree in co-relation 98857. Up to 19075 conditions per place. [2024-06-21 19:11:57,628 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 139 selfloop transitions, 81 changer transitions 0/226 dead transitions. [2024-06-21 19:11:57,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 226 transitions, 2566 flow [2024-06-21 19:11:57,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:11:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:11:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-21 19:11:57,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-06-21 19:11:57,631 INFO L175 Difference]: Start difference. First operand has 104 places, 151 transitions, 1515 flow. Second operand 8 states and 185 transitions. [2024-06-21 19:11:57,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 226 transitions, 2566 flow [2024-06-21 19:11:57,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 226 transitions, 2436 flow, removed 62 selfloop flow, removed 1 redundant places. [2024-06-21 19:11:57,798 INFO L231 Difference]: Finished difference. Result has 113 places, 188 transitions, 2140 flow [2024-06-21 19:11:57,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2140, PETRI_PLACES=113, PETRI_TRANSITIONS=188} [2024-06-21 19:11:57,798 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2024-06-21 19:11:57,799 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 188 transitions, 2140 flow [2024-06-21 19:11:57,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:57,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:11:57,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:11:57,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:11:57,799 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 19:11:57,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:11:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1350871977, now seen corresponding path program 6 times [2024-06-21 19:11:57,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:11:57,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459546617] [2024-06-21 19:11:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:11:57,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:11:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:11:58,954 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 19:11:58,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:11:58,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459546617] [2024-06-21 19:11:58,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459546617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:11:58,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:11:58,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:11:58,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374856934] [2024-06-21 19:11:58,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:11:58,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:11:58,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:11:58,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:11:58,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:11:59,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:11:59,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 188 transitions, 2140 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:11:59,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:11:59,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:11:59,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:01,925 INFO L124 PetriNetUnfolderBase]: 14476/19711 cut-off events. [2024-06-21 19:12:01,925 INFO L125 PetriNetUnfolderBase]: For 243554/243554 co-relation queries the response was YES. [2024-06-21 19:12:02,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102080 conditions, 19711 events. 14476/19711 cut-off events. For 243554/243554 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 104225 event pairs, 6526 based on Foata normal form. 6/19714 useless extension candidates. Maximal degree in co-relation 102034. Up to 18992 conditions per place. [2024-06-21 19:12:02,114 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 145 selfloop transitions, 100 changer transitions 0/251 dead transitions. [2024-06-21 19:12:02,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 251 transitions, 3203 flow [2024-06-21 19:12:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:12:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:12:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-21 19:12:02,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2024-06-21 19:12:02,117 INFO L175 Difference]: Start difference. First operand has 113 places, 188 transitions, 2140 flow. Second operand 8 states and 191 transitions. [2024-06-21 19:12:02,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 251 transitions, 3203 flow [2024-06-21 19:12:02,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 251 transitions, 3076 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-21 19:12:02,433 INFO L231 Difference]: Finished difference. Result has 119 places, 207 transitions, 2615 flow [2024-06-21 19:12:02,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2615, PETRI_PLACES=119, PETRI_TRANSITIONS=207} [2024-06-21 19:12:02,433 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-21 19:12:02,433 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 207 transitions, 2615 flow [2024-06-21 19:12:02,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 19:12:02,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:02,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:02,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:12:02,434 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 19:12:02,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:02,435 INFO L85 PathProgramCache]: Analyzing trace with hash 88551153, now seen corresponding path program 1 times [2024-06-21 19:12:02,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:02,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138179997] [2024-06-21 19:12:02,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:02,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:12:03,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138179997] [2024-06-21 19:12:03,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138179997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:03,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:03,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:12:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446486071] [2024-06-21 19:12:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:03,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:12:03,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:12:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:12:04,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:12:04,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 207 transitions, 2615 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:12:04,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:04,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:12:04,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:06,698 INFO L124 PetriNetUnfolderBase]: 12956/17822 cut-off events. [2024-06-21 19:12:06,698 INFO L125 PetriNetUnfolderBase]: For 248420/248420 co-relation queries the response was YES. [2024-06-21 19:12:06,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97068 conditions, 17822 events. 12956/17822 cut-off events. For 248420/248420 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 94379 event pairs, 5913 based on Foata normal form. 6/17825 useless extension candidates. Maximal degree in co-relation 97020. Up to 17465 conditions per place. [2024-06-21 19:12:06,864 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 220 selfloop transitions, 23 changer transitions 0/248 dead transitions. [2024-06-21 19:12:06,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 248 transitions, 3295 flow [2024-06-21 19:12:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:12:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:12:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-21 19:12:06,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338235294117647 [2024-06-21 19:12:06,867 INFO L175 Difference]: Start difference. First operand has 119 places, 207 transitions, 2615 flow. Second operand 8 states and 177 transitions. [2024-06-21 19:12:06,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 248 transitions, 3295 flow [2024-06-21 19:12:07,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 248 transitions, 3118 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-21 19:12:07,036 INFO L231 Difference]: Finished difference. Result has 123 places, 210 transitions, 2556 flow [2024-06-21 19:12:07,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2438, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2556, PETRI_PLACES=123, PETRI_TRANSITIONS=210} [2024-06-21 19:12:07,037 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-21 19:12:07,037 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 210 transitions, 2556 flow [2024-06-21 19:12:07,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:12:07,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:07,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:07,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:12:07,039 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:12:07,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:07,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1177516263, now seen corresponding path program 1 times [2024-06-21 19:12:07,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:07,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953630100] [2024-06-21 19:12:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:07,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:07,859 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 19:12:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953630100] [2024-06-21 19:12:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953630100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:07,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:07,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:12:07,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889908908] [2024-06-21 19:12:07,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:07,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:12:07,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:07,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:12:07,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:12:07,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-21 19:12:07,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 210 transitions, 2556 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 19:12:07,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:07,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-21 19:12:07,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:10,459 INFO L124 PetriNetUnfolderBase]: 15001/20303 cut-off events. [2024-06-21 19:12:10,460 INFO L125 PetriNetUnfolderBase]: For 310761/310761 co-relation queries the response was YES. [2024-06-21 19:12:10,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112960 conditions, 20303 events. 15001/20303 cut-off events. For 310761/310761 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 103606 event pairs, 7139 based on Foata normal form. 2/20302 useless extension candidates. Maximal degree in co-relation 112910. Up to 20222 conditions per place. [2024-06-21 19:12:10,695 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 211 selfloop transitions, 12 changer transitions 0/227 dead transitions. [2024-06-21 19:12:10,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 227 transitions, 3096 flow [2024-06-21 19:12:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:12:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:12:10,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-21 19:12:10,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41568627450980394 [2024-06-21 19:12:10,697 INFO L175 Difference]: Start difference. First operand has 123 places, 210 transitions, 2556 flow. Second operand 5 states and 106 transitions. [2024-06-21 19:12:10,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 227 transitions, 3096 flow [2024-06-21 19:12:10,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 227 transitions, 3004 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 19:12:10,941 INFO L231 Difference]: Finished difference. Result has 122 places, 214 transitions, 2555 flow [2024-06-21 19:12:10,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2464, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2555, PETRI_PLACES=122, PETRI_TRANSITIONS=214} [2024-06-21 19:12:10,947 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-21 19:12:10,948 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 214 transitions, 2555 flow [2024-06-21 19:12:10,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 19:12:10,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:10,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:10,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:12:10,948 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 19:12:10,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1867953352, now seen corresponding path program 1 times [2024-06-21 19:12:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:10,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087257746] [2024-06-21 19:12:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:12,282 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 19:12:12,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:12,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087257746] [2024-06-21 19:12:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087257746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:12,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:12,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:12:12,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175064744] [2024-06-21 19:12:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:12,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:12:12,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:12,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:12:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:12:12,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:12:12,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 214 transitions, 2555 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:12:12,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:12,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:12:12,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:15,338 INFO L124 PetriNetUnfolderBase]: 14402/19615 cut-off events. [2024-06-21 19:12:15,339 INFO L125 PetriNetUnfolderBase]: For 341724/341728 co-relation queries the response was YES. [2024-06-21 19:12:15,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114981 conditions, 19615 events. 14402/19615 cut-off events. For 341724/341728 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 103564 event pairs, 6760 based on Foata normal form. 14/19616 useless extension candidates. Maximal degree in co-relation 114929. Up to 19168 conditions per place. [2024-06-21 19:12:15,505 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 165 selfloop transitions, 81 changer transitions 0/252 dead transitions. [2024-06-21 19:12:15,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 252 transitions, 3293 flow [2024-06-21 19:12:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:12:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:12:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-21 19:12:15,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649859943977591 [2024-06-21 19:12:15,514 INFO L175 Difference]: Start difference. First operand has 122 places, 214 transitions, 2555 flow. Second operand 7 states and 166 transitions. [2024-06-21 19:12:15,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 252 transitions, 3293 flow [2024-06-21 19:12:15,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 252 transitions, 3194 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-21 19:12:15,752 INFO L231 Difference]: Finished difference. Result has 126 places, 221 transitions, 2803 flow [2024-06-21 19:12:15,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2803, PETRI_PLACES=126, PETRI_TRANSITIONS=221} [2024-06-21 19:12:15,753 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2024-06-21 19:12:15,753 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 221 transitions, 2803 flow [2024-06-21 19:12:15,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:12:15,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:15,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:15,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:12:15,753 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 19:12:15,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1541349390, now seen corresponding path program 1 times [2024-06-21 19:12:15,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:15,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930025711] [2024-06-21 19:12:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:15,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:17,330 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 19:12:17,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:17,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930025711] [2024-06-21 19:12:17,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930025711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:17,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:17,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:12:17,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699810035] [2024-06-21 19:12:17,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:17,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:12:17,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:12:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:12:17,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-21 19:12:17,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 221 transitions, 2803 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:12:17,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:17,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-21 19:12:17,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:20,528 INFO L124 PetriNetUnfolderBase]: 15169/20496 cut-off events. [2024-06-21 19:12:20,529 INFO L125 PetriNetUnfolderBase]: For 387117/387117 co-relation queries the response was YES. [2024-06-21 19:12:20,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123373 conditions, 20496 events. 15169/20496 cut-off events. For 387117/387117 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 104329 event pairs, 6136 based on Foata normal form. 15/20498 useless extension candidates. Maximal degree in co-relation 123319. Up to 19928 conditions per place. [2024-06-21 19:12:20,709 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 167 selfloop transitions, 130 changer transitions 0/301 dead transitions. [2024-06-21 19:12:20,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 301 transitions, 4193 flow [2024-06-21 19:12:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:12:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:12:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-21 19:12:20,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-06-21 19:12:20,711 INFO L175 Difference]: Start difference. First operand has 126 places, 221 transitions, 2803 flow. Second operand 8 states and 185 transitions. [2024-06-21 19:12:20,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 301 transitions, 4193 flow [2024-06-21 19:12:20,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 301 transitions, 3938 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-21 19:12:20,944 INFO L231 Difference]: Finished difference. Result has 130 places, 261 transitions, 3524 flow [2024-06-21 19:12:20,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2578, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3524, PETRI_PLACES=130, PETRI_TRANSITIONS=261} [2024-06-21 19:12:20,945 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-21 19:12:20,945 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 261 transitions, 3524 flow [2024-06-21 19:12:20,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:12:20,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:20,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:20,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:12:20,945 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:12:20,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1541343438, now seen corresponding path program 2 times [2024-06-21 19:12:20,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:20,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751870000] [2024-06-21 19:12:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:20,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:22,294 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 19:12:22,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:22,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751870000] [2024-06-21 19:12:22,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751870000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:22,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:22,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:12:22,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82850556] [2024-06-21 19:12:22,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:22,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:12:22,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:12:22,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:12:22,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:12:22,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 261 transitions, 3524 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:12:22,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:22,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:12:22,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:25,492 INFO L124 PetriNetUnfolderBase]: 14407/19701 cut-off events. [2024-06-21 19:12:25,493 INFO L125 PetriNetUnfolderBase]: For 437435/437488 co-relation queries the response was YES. [2024-06-21 19:12:25,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127451 conditions, 19701 events. 14407/19701 cut-off events. For 437435/437488 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 104075 event pairs, 6040 based on Foata normal form. 48/19736 useless extension candidates. Maximal degree in co-relation 127395. Up to 19069 conditions per place. [2024-06-21 19:12:25,665 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 170 selfloop transitions, 122 changer transitions 0/299 dead transitions. [2024-06-21 19:12:25,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 299 transitions, 4382 flow [2024-06-21 19:12:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:12:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:12:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-21 19:12:25,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-06-21 19:12:25,673 INFO L175 Difference]: Start difference. First operand has 130 places, 261 transitions, 3524 flow. Second operand 7 states and 168 transitions. [2024-06-21 19:12:25,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 299 transitions, 4382 flow [2024-06-21 19:12:26,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 299 transitions, 4081 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-21 19:12:26,014 INFO L231 Difference]: Finished difference. Result has 133 places, 268 transitions, 3665 flow [2024-06-21 19:12:26,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3665, PETRI_PLACES=133, PETRI_TRANSITIONS=268} [2024-06-21 19:12:26,014 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-21 19:12:26,014 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 268 transitions, 3665 flow [2024-06-21 19:12:26,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:12:26,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:26,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:26,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 19:12:26,016 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 19:12:26,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1649678212, now seen corresponding path program 2 times [2024-06-21 19:12:26,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:26,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51520359] [2024-06-21 19:12:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:26,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:27,572 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 19:12:27,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51520359] [2024-06-21 19:12:27,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51520359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:27,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:27,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:12:27,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920359839] [2024-06-21 19:12:27,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:27,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:12:27,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:27,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:12:27,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:12:27,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-21 19:12:27,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 268 transitions, 3665 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:12:27,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:27,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-21 19:12:27,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:12:30,814 INFO L124 PetriNetUnfolderBase]: 15293/20671 cut-off events. [2024-06-21 19:12:30,814 INFO L125 PetriNetUnfolderBase]: For 489870/489900 co-relation queries the response was YES. [2024-06-21 19:12:30,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135810 conditions, 20671 events. 15293/20671 cut-off events. For 489870/489900 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 105269 event pairs, 6184 based on Foata normal form. 23/20685 useless extension candidates. Maximal degree in co-relation 135753. Up to 20421 conditions per place. [2024-06-21 19:12:31,010 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 256 selfloop transitions, 56 changer transitions 0/316 dead transitions. [2024-06-21 19:12:31,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 316 transitions, 4553 flow [2024-06-21 19:12:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:12:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:12:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-21 19:12:31,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42892156862745096 [2024-06-21 19:12:31,012 INFO L175 Difference]: Start difference. First operand has 133 places, 268 transitions, 3665 flow. Second operand 8 states and 175 transitions. [2024-06-21 19:12:31,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 316 transitions, 4553 flow [2024-06-21 19:12:31,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 316 transitions, 4212 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-21 19:12:31,351 INFO L231 Difference]: Finished difference. Result has 137 places, 277 transitions, 3581 flow [2024-06-21 19:12:31,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3324, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3581, PETRI_PLACES=137, PETRI_TRANSITIONS=277} [2024-06-21 19:12:31,352 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-21 19:12:31,352 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 277 transitions, 3581 flow [2024-06-21 19:12:31,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:12:31,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:12:31,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:12:31,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 19:12:31,353 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 19:12:31,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:12:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1649684164, now seen corresponding path program 3 times [2024-06-21 19:12:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:12:31,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667201976] [2024-06-21 19:12:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:12:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:12:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:12:32,899 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 19:12:32,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:12:32,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667201976] [2024-06-21 19:12:32,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667201976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:12:32,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:12:32,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:12:32,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853344463] [2024-06-21 19:12:32,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:12:32,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:12:32,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:12:32,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:12:32,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:12:32,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-21 19:12:32,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 277 transitions, 3581 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:12:32,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:12:32,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-21 19:12:32,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand