./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_tso.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/mix027_tso.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/mix027_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix027_tso.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 18:47:15,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:47:15,598 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:47:15,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:47:15,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:47:15,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:47:15,627 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:47:15,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:47:15,628 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:47:15,631 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:47:15,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:47:15,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:47:15,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:47:15,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:47:15,633 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:47:15,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:47:15,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:47:15,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:47:15,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:47:15,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:47:15,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:47:15,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:47:15,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:47:15,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:47:15,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:47:15,635 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:47:15,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:47:15,636 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:47:15,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:47:15,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:47:15,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:47:15,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:47:15,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:47:15,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:47:15,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:47:15,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:47:15,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:47:15,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:47:15,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:47:15,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:47:15,639 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:47:15,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:47:15,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:47:15,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:47:15,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:47:15,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:47:15,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:47:15,880 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:47:15,880 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:47:15,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix027_tso.yml/witness.yml [2024-06-21 18:47:15,984 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:47:15,984 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:47:15,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2024-06-21 18:47:16,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:47:17,227 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:47:17,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2024-06-21 18:47:17,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df54e8d14/929ab5591bd447e8af539459b7556220/FLAG72c45636b [2024-06-21 18:47:17,269 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df54e8d14/929ab5591bd447e8af539459b7556220 [2024-06-21 18:47:17,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:47:17,271 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:47:17,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:47:17,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:47:17,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:47:17,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:47:15" (1/2) ... [2024-06-21 18:47:17,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2398e6e3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:47:17, skipping insertion in model container [2024-06-21 18:47:17,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:47:15" (1/2) ... [2024-06-21 18:47:17,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56355b81 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:47:17, skipping insertion in model container [2024-06-21 18:47:17,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:47:17" (2/2) ... [2024-06-21 18:47:17,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2398e6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17, skipping insertion in model container [2024-06-21 18:47:17,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:47:17" (2/2) ... [2024-06-21 18:47:17,283 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:47:17,310 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:47:17,311 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EBX) + (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_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$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_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (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 18:47:17,311 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EBX) + (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_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$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_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (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 18:47:17,312 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EBX) + (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_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$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_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (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 18:47:17,312 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EBX) + (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_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$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_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (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 18:47:17,312 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:47:17,313 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-06-21 18:47:17,354 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:47:17,653 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:47:17,661 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 18:47:17,872 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:47:17,921 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:47:17,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17 WrapperNode [2024-06-21 18:47:17,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:47:17,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:47:17,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:47:17,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:47:17,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:17,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:17,989 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2024-06-21 18:47:17,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:47:17,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:47:17,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:47:17,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:47:17,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:17,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:18,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:18,022 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 18:47:18,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:18,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:18,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:18,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:18,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:18,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:18,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:47:18,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:47:18,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:47:18,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:47:18,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (1/1) ... [2024-06-21 18:47:18,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:47:18,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:47:18,089 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 18:47:18,108 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 18:47:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:47:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:47:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:47:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:47:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:47:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:47:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 18:47:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 18:47:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 18:47:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 18:47:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:47:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:47:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:47:18,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:47:18,125 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 18:47:18,253 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:47:18,255 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:47:18,632 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:47:18,632 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:47:18,781 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:47:18,782 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:47:18,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:47:18 BoogieIcfgContainer [2024-06-21 18:47:18,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:47:18,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:47:18,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:47:18,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:47:18,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:47:15" (1/4) ... [2024-06-21 18:47:18,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7718ee63 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:47:18, skipping insertion in model container [2024-06-21 18:47:18,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:47:17" (2/4) ... [2024-06-21 18:47:18,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7718ee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:47:18, skipping insertion in model container [2024-06-21 18:47:18,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:47:17" (3/4) ... [2024-06-21 18:47:18,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7718ee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:47:18, skipping insertion in model container [2024-06-21 18:47:18,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:47:18" (4/4) ... [2024-06-21 18:47:18,790 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_tso.i [2024-06-21 18:47:18,804 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:47:18,804 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 18:47:18,804 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:47:18,850 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:47:18,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 18:47:18,933 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-21 18:47:18,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:47:18,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 18:47:18,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 18:47:18,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-21 18:47:18,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:47:18,955 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;@12fe4765, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:47:18,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 18:47:18,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:47:18,959 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 18:47:18,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:47:18,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:18,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:47:18,960 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 18:47:18,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:18,991 INFO L85 PathProgramCache]: Analyzing trace with hash 398626243, now seen corresponding path program 1 times [2024-06-21 18:47:18,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220354600] [2024-06-21 18:47:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:19,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:20,220 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 18:47:20,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220354600] [2024-06-21 18:47:20,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220354600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:20,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:20,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:47:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875885414] [2024-06-21 18:47:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:20,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:47:20,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:47:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:47:20,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-21 18:47:20,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:47:20,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:20,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-21 18:47:20,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:22,001 INFO L124 PetriNetUnfolderBase]: 9903/14109 cut-off events. [2024-06-21 18:47:22,001 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-21 18:47:22,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28013 conditions, 14109 events. 9903/14109 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 79714 event pairs, 7667 based on Foata normal form. 1/13684 useless extension candidates. Maximal degree in co-relation 28000. Up to 13453 conditions per place. [2024-06-21 18:47:22,082 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 43 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-21 18:47:22,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 229 flow [2024-06-21 18:47:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:47:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:47:22,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-21 18:47:22,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-06-21 18:47:22,094 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 94 transitions. [2024-06-21 18:47:22,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 229 flow [2024-06-21 18:47:22,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:47:22,102 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-21 18:47:22,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-21 18:47:22,107 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-21 18:47:22,107 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-21 18:47:22,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:47:22,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:22,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:22,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:47:22,108 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 18:47:22,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash 827752098, now seen corresponding path program 1 times [2024-06-21 18:47:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:22,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716610408] [2024-06-21 18:47:22,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:47:22,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716610408] [2024-06-21 18:47:22,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716610408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:22,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:22,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:47:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737881124] [2024-06-21 18:47:22,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:22,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:47:22,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:47:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:47:22,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:47:22,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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 18:47:22,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:22,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:47:22,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:24,670 INFO L124 PetriNetUnfolderBase]: 11585/16035 cut-off events. [2024-06-21 18:47:24,671 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-21 18:47:24,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36154 conditions, 16035 events. 11585/16035 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 87100 event pairs, 8249 based on Foata normal form. 4/16036 useless extension candidates. Maximal degree in co-relation 36142. Up to 15650 conditions per place. [2024-06-21 18:47:24,744 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 54 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-21 18:47:24,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 323 flow [2024-06-21 18:47:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:47:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:47:24,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-21 18:47:24,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5721153846153846 [2024-06-21 18:47:24,747 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 119 transitions. [2024-06-21 18:47:24,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 323 flow [2024-06-21 18:47:24,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:47:24,750 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-21 18:47:24,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-21 18:47:24,751 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-21 18:47:24,752 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-21 18:47:24,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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 18:47:24,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:24,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:24,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:47:24,755 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 18:47:24,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:24,760 INFO L85 PathProgramCache]: Analyzing trace with hash -109487992, now seen corresponding path program 1 times [2024-06-21 18:47:24,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992666264] [2024-06-21 18:47:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:25,520 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 18:47:25,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:25,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992666264] [2024-06-21 18:47:25,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992666264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:25,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:25,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:47:25,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213246143] [2024-06-21 18:47:25,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:25,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:47:25,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:47:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:47:25,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:47:25,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:47:25,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:25,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:47:25,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:27,198 INFO L124 PetriNetUnfolderBase]: 11565/15993 cut-off events. [2024-06-21 18:47:27,198 INFO L125 PetriNetUnfolderBase]: For 8263/8263 co-relation queries the response was YES. [2024-06-21 18:47:27,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40029 conditions, 15993 events. 11565/15993 cut-off events. For 8263/8263 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86569 event pairs, 6611 based on Foata normal form. 8/15998 useless extension candidates. Maximal degree in co-relation 40015. Up to 15580 conditions per place. [2024-06-21 18:47:27,285 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 65 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-06-21 18:47:27,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 435 flow [2024-06-21 18:47:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:47:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:47:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-21 18:47:27,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653846153846154 [2024-06-21 18:47:27,287 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 147 transitions. [2024-06-21 18:47:27,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 435 flow [2024-06-21 18:47:27,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 416 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 18:47:27,290 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 227 flow [2024-06-21 18:47:27,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-21 18:47:27,291 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-06-21 18:47:27,291 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 227 flow [2024-06-21 18:47:27,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:47:27,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:27,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:27,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:47:27,292 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 18:47:27,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1280440429, now seen corresponding path program 1 times [2024-06-21 18:47:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:27,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943871741] [2024-06-21 18:47:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:28,670 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 18:47:28,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943871741] [2024-06-21 18:47:28,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943871741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:28,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:28,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:47:28,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29306937] [2024-06-21 18:47:28,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:28,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:47:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:47:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:47:28,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:47:28,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:47:28,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:28,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:47:28,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:30,510 INFO L124 PetriNetUnfolderBase]: 11549/15951 cut-off events. [2024-06-21 18:47:30,514 INFO L125 PetriNetUnfolderBase]: For 15997/15997 co-relation queries the response was YES. [2024-06-21 18:47:30,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43863 conditions, 15951 events. 11549/15951 cut-off events. For 15997/15997 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86517 event pairs, 5646 based on Foata normal form. 8/15956 useless extension candidates. Maximal degree in co-relation 43848. Up to 15514 conditions per place. [2024-06-21 18:47:30,612 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 72 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-21 18:47:30,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 95 transitions, 519 flow [2024-06-21 18:47:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:47:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:47:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-21 18:47:30,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448717948717948 [2024-06-21 18:47:30,614 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 227 flow. Second operand 6 states and 170 transitions. [2024-06-21 18:47:30,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 95 transitions, 519 flow [2024-06-21 18:47:30,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 95 transitions, 486 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 18:47:30,619 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 258 flow [2024-06-21 18:47:30,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-21 18:47:30,619 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-21 18:47:30,620 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 258 flow [2024-06-21 18:47:30,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:47:30,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:30,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:30,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:47:30,620 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 18:47:30,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1950373012, now seen corresponding path program 1 times [2024-06-21 18:47:30,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:30,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539750856] [2024-06-21 18:47:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:30,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:31,463 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 18:47:31,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539750856] [2024-06-21 18:47:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539750856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:31,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:31,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:47:31,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610677504] [2024-06-21 18:47:31,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:31,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:47:31,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:31,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:47:31,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:47:31,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:47:31,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 258 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 18:47:31,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:31,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:47:31,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:32,985 INFO L124 PetriNetUnfolderBase]: 11540/15955 cut-off events. [2024-06-21 18:47:32,986 INFO L125 PetriNetUnfolderBase]: For 25391/25391 co-relation queries the response was YES. [2024-06-21 18:47:33,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47003 conditions, 15955 events. 11540/15955 cut-off events. For 25391/25391 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86188 event pairs, 6838 based on Foata normal form. 3/15955 useless extension candidates. Maximal degree in co-relation 46986. Up to 15592 conditions per place. [2024-06-21 18:47:33,069 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 60 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-21 18:47:33,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 480 flow [2024-06-21 18:47:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:47:33,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:47:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-21 18:47:33,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2024-06-21 18:47:33,071 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 258 flow. Second operand 5 states and 119 transitions. [2024-06-21 18:47:33,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 480 flow [2024-06-21 18:47:33,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 432 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 18:47:33,076 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 294 flow [2024-06-21 18:47:33,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-21 18:47:33,093 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-21 18:47:33,093 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 294 flow [2024-06-21 18:47:33,093 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 18:47:33,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:33,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:33,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:47:33,094 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 18:47:33,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:33,094 INFO L85 PathProgramCache]: Analyzing trace with hash -899342073, now seen corresponding path program 1 times [2024-06-21 18:47:33,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:33,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786412162] [2024-06-21 18:47:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:33,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:34,038 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 18:47:34,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:34,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786412162] [2024-06-21 18:47:34,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786412162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:34,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:34,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:47:34,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611197165] [2024-06-21 18:47:34,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:34,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:47:34,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:34,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:47:34,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:47:34,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:47:34,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:47:34,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:34,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:47:34,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:35,705 INFO L124 PetriNetUnfolderBase]: 11585/16014 cut-off events. [2024-06-21 18:47:35,705 INFO L125 PetriNetUnfolderBase]: For 36184/36184 co-relation queries the response was YES. [2024-06-21 18:47:35,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50962 conditions, 16014 events. 11585/16014 cut-off events. For 36184/36184 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 86474 event pairs, 6743 based on Foata normal form. 3/16012 useless extension candidates. Maximal degree in co-relation 50942. Up to 15625 conditions per place. [2024-06-21 18:47:35,815 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 69 selfloop transitions, 21 changer transitions 0/96 dead transitions. [2024-06-21 18:47:35,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 598 flow [2024-06-21 18:47:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:47:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:47:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-21 18:47:35,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258241758241758 [2024-06-21 18:47:35,822 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 294 flow. Second operand 7 states and 155 transitions. [2024-06-21 18:47:35,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 598 flow [2024-06-21 18:47:35,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 96 transitions, 565 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-21 18:47:35,830 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 388 flow [2024-06-21 18:47:35,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-21 18:47:35,833 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-21 18:47:35,833 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 388 flow [2024-06-21 18:47:35,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:47:35,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:35,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:35,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:47:35,834 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 18:47:35,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:35,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1702740595, now seen corresponding path program 2 times [2024-06-21 18:47:35,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:35,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750030732] [2024-06-21 18:47:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:35,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:36,954 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 18:47:36,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:36,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750030732] [2024-06-21 18:47:36,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750030732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:36,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:36,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:47:36,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687955044] [2024-06-21 18:47:36,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:36,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:47:36,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:36,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:47:36,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:47:37,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:47:37,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:47:37,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:37,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:47:37,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:38,980 INFO L124 PetriNetUnfolderBase]: 11607/16060 cut-off events. [2024-06-21 18:47:38,980 INFO L125 PetriNetUnfolderBase]: For 49124/49136 co-relation queries the response was YES. [2024-06-21 18:47:39,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55045 conditions, 16060 events. 11607/16060 cut-off events. For 49124/49136 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 86866 event pairs, 6701 based on Foata normal form. 11/16064 useless extension candidates. Maximal degree in co-relation 55022. Up to 15607 conditions per place. [2024-06-21 18:47:39,109 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 68 selfloop transitions, 32 changer transitions 0/106 dead transitions. [2024-06-21 18:47:39,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 770 flow [2024-06-21 18:47:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:47:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:47:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-21 18:47:39,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340659340659341 [2024-06-21 18:47:39,112 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 388 flow. Second operand 7 states and 158 transitions. [2024-06-21 18:47:39,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 770 flow [2024-06-21 18:47:39,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 726 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-21 18:47:39,124 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 507 flow [2024-06-21 18:47:39,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=507, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-21 18:47:39,125 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-06-21 18:47:39,125 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 507 flow [2024-06-21 18:47:39,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:47:39,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:39,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:39,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:47:39,126 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 18:47:39,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:39,127 INFO L85 PathProgramCache]: Analyzing trace with hash -715440333, now seen corresponding path program 3 times [2024-06-21 18:47:39,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:39,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904097539] [2024-06-21 18:47:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:39,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:40,020 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 18:47:40,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904097539] [2024-06-21 18:47:40,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904097539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:40,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:40,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:47:40,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167716935] [2024-06-21 18:47:40,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:40,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:47:40,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:40,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:47:40,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:47:40,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:47:40,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 507 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:47:40,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:40,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:47:40,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:41,758 INFO L124 PetriNetUnfolderBase]: 11634/16102 cut-off events. [2024-06-21 18:47:41,758 INFO L125 PetriNetUnfolderBase]: For 65670/65670 co-relation queries the response was YES. [2024-06-21 18:47:41,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59058 conditions, 16102 events. 11634/16102 cut-off events. For 65670/65670 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 87163 event pairs, 6692 based on Foata normal form. 3/16102 useless extension candidates. Maximal degree in co-relation 59033. Up to 15675 conditions per place. [2024-06-21 18:47:41,873 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 84 selfloop transitions, 31 changer transitions 0/121 dead transitions. [2024-06-21 18:47:41,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 121 transitions, 881 flow [2024-06-21 18:47:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:47:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:47:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-21 18:47:41,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45604395604395603 [2024-06-21 18:47:41,875 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 507 flow. Second operand 7 states and 166 transitions. [2024-06-21 18:47:41,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 121 transitions, 881 flow [2024-06-21 18:47:41,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 121 transitions, 808 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-21 18:47:41,903 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 594 flow [2024-06-21 18:47:41,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-06-21 18:47:41,904 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-21 18:47:41,904 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 594 flow [2024-06-21 18:47:41,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:47:41,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:41,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:41,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:47:41,905 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 18:47:41,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 234350141, now seen corresponding path program 1 times [2024-06-21 18:47:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:41,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190515650] [2024-06-21 18:47:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:43,419 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 18:47:43,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:43,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190515650] [2024-06-21 18:47:43,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190515650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:43,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:47:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605915417] [2024-06-21 18:47:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:43,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:47:43,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:43,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:47:43,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:47:43,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-21 18:47:43,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 594 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 18:47:43,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:43,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-21 18:47:43,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:45,513 INFO L124 PetriNetUnfolderBase]: 14149/19450 cut-off events. [2024-06-21 18:47:45,513 INFO L125 PetriNetUnfolderBase]: For 87994/87994 co-relation queries the response was YES. [2024-06-21 18:47:45,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71990 conditions, 19450 events. 14149/19450 cut-off events. For 87994/87994 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 104425 event pairs, 8131 based on Foata normal form. 3/19450 useless extension candidates. Maximal degree in co-relation 71962. Up to 19034 conditions per place. [2024-06-21 18:47:45,657 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 103 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2024-06-21 18:47:45,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 128 transitions, 995 flow [2024-06-21 18:47:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:47:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:47:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-21 18:47:45,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43131868131868134 [2024-06-21 18:47:45,658 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 594 flow. Second operand 7 states and 157 transitions. [2024-06-21 18:47:45,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 128 transitions, 995 flow [2024-06-21 18:47:45,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 128 transitions, 921 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 18:47:45,696 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 647 flow [2024-06-21 18:47:45,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2024-06-21 18:47:45,697 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2024-06-21 18:47:45,697 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 647 flow [2024-06-21 18:47:45,698 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 18:47:45,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:45,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:45,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:47:45,698 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 18:47:45,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:45,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1502577131, now seen corresponding path program 1 times [2024-06-21 18:47:45,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:45,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832280535] [2024-06-21 18:47:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:45,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:46,684 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 18:47:46,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:46,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832280535] [2024-06-21 18:47:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832280535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:46,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:47:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987098795] [2024-06-21 18:47:46,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:46,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:47:46,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:47:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:47:46,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:47:46,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 647 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:47:46,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:46,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:47:46,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:48,862 INFO L124 PetriNetUnfolderBase]: 13895/19194 cut-off events. [2024-06-21 18:47:48,862 INFO L125 PetriNetUnfolderBase]: For 110653/110653 co-relation queries the response was YES. [2024-06-21 18:47:48,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77219 conditions, 19194 events. 13895/19194 cut-off events. For 110653/110653 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 105764 event pairs, 6956 based on Foata normal form. 3/19188 useless extension candidates. Maximal degree in co-relation 77189. Up to 18631 conditions per place. [2024-06-21 18:47:49,014 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 102 selfloop transitions, 37 changer transitions 0/146 dead transitions. [2024-06-21 18:47:49,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 146 transitions, 1119 flow [2024-06-21 18:47:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:47:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:47:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-21 18:47:49,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-06-21 18:47:49,017 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 647 flow. Second operand 7 states and 172 transitions. [2024-06-21 18:47:49,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 146 transitions, 1119 flow [2024-06-21 18:47:49,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 146 transitions, 1054 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-21 18:47:49,059 INFO L231 Difference]: Finished difference. Result has 88 places, 112 transitions, 780 flow [2024-06-21 18:47:49,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=780, PETRI_PLACES=88, PETRI_TRANSITIONS=112} [2024-06-21 18:47:49,060 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-21 18:47:49,060 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 112 transitions, 780 flow [2024-06-21 18:47:49,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:47:49,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:49,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:47:49,061 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 18:47:49,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1502457161, now seen corresponding path program 2 times [2024-06-21 18:47:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:49,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441345021] [2024-06-21 18:47:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:49,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:50,150 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 18:47:50,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:50,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441345021] [2024-06-21 18:47:50,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441345021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:50,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:50,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:47:50,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284745555] [2024-06-21 18:47:50,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:50,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:47:50,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:47:50,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:47:50,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:47:50,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 112 transitions, 780 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:47:50,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:50,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:47:50,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:52,430 INFO L124 PetriNetUnfolderBase]: 13948/19244 cut-off events. [2024-06-21 18:47:52,430 INFO L125 PetriNetUnfolderBase]: For 139016/139016 co-relation queries the response was YES. [2024-06-21 18:47:52,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83573 conditions, 19244 events. 13948/19244 cut-off events. For 139016/139016 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 106014 event pairs, 6860 based on Foata normal form. 3/19238 useless extension candidates. Maximal degree in co-relation 83539. Up to 18638 conditions per place. [2024-06-21 18:47:52,559 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 99 selfloop transitions, 50 changer transitions 0/156 dead transitions. [2024-06-21 18:47:52,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 156 transitions, 1364 flow [2024-06-21 18:47:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:47:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:47:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-21 18:47:52,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48626373626373626 [2024-06-21 18:47:52,561 INFO L175 Difference]: Start difference. First operand has 88 places, 112 transitions, 780 flow. Second operand 7 states and 177 transitions. [2024-06-21 18:47:52,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 156 transitions, 1364 flow [2024-06-21 18:47:52,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 156 transitions, 1296 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-21 18:47:52,617 INFO L231 Difference]: Finished difference. Result has 95 places, 120 transitions, 964 flow [2024-06-21 18:47:52,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=964, PETRI_PLACES=95, PETRI_TRANSITIONS=120} [2024-06-21 18:47:52,618 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-21 18:47:52,618 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 120 transitions, 964 flow [2024-06-21 18:47:52,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:47:52,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:52,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:52,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:47:52,619 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 18:47:52,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:52,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1245351489, now seen corresponding path program 3 times [2024-06-21 18:47:52,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:52,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492520079] [2024-06-21 18:47:52,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:52,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:53,742 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 18:47:53,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:53,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492520079] [2024-06-21 18:47:53,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492520079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:53,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:53,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:47:53,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878926054] [2024-06-21 18:47:53,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:53,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:47:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:53,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:47:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:47:53,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:47:53,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 120 transitions, 964 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:47:53,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:53,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:47:53,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:56,230 INFO L124 PetriNetUnfolderBase]: 14001/19344 cut-off events. [2024-06-21 18:47:56,230 INFO L125 PetriNetUnfolderBase]: For 173443/173495 co-relation queries the response was YES. [2024-06-21 18:47:56,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90091 conditions, 19344 events. 14001/19344 cut-off events. For 173443/173495 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 106498 event pairs, 6830 based on Foata normal form. 19/19346 useless extension candidates. Maximal degree in co-relation 90053. Up to 18598 conditions per place. [2024-06-21 18:47:56,428 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 87 selfloop transitions, 70 changer transitions 0/164 dead transitions. [2024-06-21 18:47:56,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 164 transitions, 1594 flow [2024-06-21 18:47:56,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:47:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:47:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-21 18:47:56,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-21 18:47:56,437 INFO L175 Difference]: Start difference. First operand has 95 places, 120 transitions, 964 flow. Second operand 7 states and 175 transitions. [2024-06-21 18:47:56,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 164 transitions, 1594 flow [2024-06-21 18:47:56,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 164 transitions, 1511 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-21 18:47:56,502 INFO L231 Difference]: Finished difference. Result has 100 places, 129 transitions, 1218 flow [2024-06-21 18:47:56,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1218, PETRI_PLACES=100, PETRI_TRANSITIONS=129} [2024-06-21 18:47:56,503 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-21 18:47:56,503 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 129 transitions, 1218 flow [2024-06-21 18:47:56,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:47:56,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:56,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:56,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:47:56,503 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 18:47:56,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1373632549, now seen corresponding path program 4 times [2024-06-21 18:47:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:56,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839700651] [2024-06-21 18:47:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:57,311 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 18:47:57,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:57,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839700651] [2024-06-21 18:47:57,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839700651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:57,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:57,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:47:57,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669103233] [2024-06-21 18:47:57,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:57,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:47:57,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:57,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:47:57,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:47:57,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:47:57,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 129 transitions, 1218 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:47:57,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:57,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:47:57,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:59,824 INFO L124 PetriNetUnfolderBase]: 14082/19465 cut-off events. [2024-06-21 18:47:59,824 INFO L125 PetriNetUnfolderBase]: For 216101/216145 co-relation queries the response was YES. [2024-06-21 18:47:59,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97910 conditions, 19465 events. 14082/19465 cut-off events. For 216101/216145 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 107141 event pairs, 6813 based on Foata normal form. 15/19477 useless extension candidates. Maximal degree in co-relation 97869. Up to 18846 conditions per place. [2024-06-21 18:47:59,971 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 129 selfloop transitions, 56 changer transitions 0/192 dead transitions. [2024-06-21 18:47:59,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 192 transitions, 1955 flow [2024-06-21 18:47:59,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:47:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:47:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-21 18:47:59,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-21 18:47:59,973 INFO L175 Difference]: Start difference. First operand has 100 places, 129 transitions, 1218 flow. Second operand 8 states and 192 transitions. [2024-06-21 18:47:59,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 192 transitions, 1955 flow [2024-06-21 18:48:00,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 192 transitions, 1837 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-21 18:48:00,083 INFO L231 Difference]: Finished difference. Result has 106 places, 152 transitions, 1510 flow [2024-06-21 18:48:00,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1510, PETRI_PLACES=106, PETRI_TRANSITIONS=152} [2024-06-21 18:48:00,083 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-21 18:48:00,084 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 152 transitions, 1510 flow [2024-06-21 18:48:00,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:48:00,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:48:00,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:48:00,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:48:00,084 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 18:48:00,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:48:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1597488053, now seen corresponding path program 5 times [2024-06-21 18:48:00,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:48:00,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490972325] [2024-06-21 18:48:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:48:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:48:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:48:00,945 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 18:48:00,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:48:00,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490972325] [2024-06-21 18:48:00,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490972325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:48:00,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:48:00,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:48:00,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741402215] [2024-06-21 18:48:00,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:48:00,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:48:00,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:48:00,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:48:00,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:48:01,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:48:01,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 152 transitions, 1510 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:48:01,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:48:01,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:48:01,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:48:03,586 INFO L124 PetriNetUnfolderBase]: 14214/19661 cut-off events. [2024-06-21 18:48:03,586 INFO L125 PetriNetUnfolderBase]: For 221343/221395 co-relation queries the response was YES. [2024-06-21 18:48:03,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98605 conditions, 19661 events. 14214/19661 cut-off events. For 221343/221395 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 108370 event pairs, 6813 based on Foata normal form. 23/19681 useless extension candidates. Maximal degree in co-relation 98561. Up to 18974 conditions per place. [2024-06-21 18:48:03,748 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 139 selfloop transitions, 81 changer transitions 0/227 dead transitions. [2024-06-21 18:48:03,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 227 transitions, 2561 flow [2024-06-21 18:48:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:48:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:48:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-21 18:48:03,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639423076923077 [2024-06-21 18:48:03,750 INFO L175 Difference]: Start difference. First operand has 106 places, 152 transitions, 1510 flow. Second operand 8 states and 193 transitions. [2024-06-21 18:48:03,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 227 transitions, 2561 flow [2024-06-21 18:48:03,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 227 transitions, 2429 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-06-21 18:48:03,928 INFO L231 Difference]: Finished difference. Result has 114 places, 189 transitions, 2133 flow [2024-06-21 18:48:03,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2133, PETRI_PLACES=114, PETRI_TRANSITIONS=189} [2024-06-21 18:48:03,929 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-21 18:48:03,929 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 189 transitions, 2133 flow [2024-06-21 18:48:03,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:48:03,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:48:03,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:48:03,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:48:03,930 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 18:48:03,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:48:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1550125013, now seen corresponding path program 6 times [2024-06-21 18:48:03,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:48:03,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093585963] [2024-06-21 18:48:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:48:03,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:48:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:48:04,832 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 18:48:04,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:48:04,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093585963] [2024-06-21 18:48:04,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093585963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:48:04,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:48:04,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:48:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350095145] [2024-06-21 18:48:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:48:04,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:48:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:48:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:48:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:48:04,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:48:04,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 189 transitions, 2133 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:48:04,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:48:04,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:48:04,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:48:07,618 INFO L124 PetriNetUnfolderBase]: 14248/19715 cut-off events. [2024-06-21 18:48:07,618 INFO L125 PetriNetUnfolderBase]: For 238446/238486 co-relation queries the response was YES. [2024-06-21 18:48:07,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100358 conditions, 19715 events. 14248/19715 cut-off events. For 238446/238486 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 108583 event pairs, 6823 based on Foata normal form. 11/19723 useless extension candidates. Maximal degree in co-relation 100310. Up to 18910 conditions per place. [2024-06-21 18:48:07,786 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 127 selfloop transitions, 107 changer transitions 0/241 dead transitions. [2024-06-21 18:48:07,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 241 transitions, 3028 flow [2024-06-21 18:48:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:48:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:48:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-21 18:48:07,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735576923076923 [2024-06-21 18:48:07,797 INFO L175 Difference]: Start difference. First operand has 114 places, 189 transitions, 2133 flow. Second operand 8 states and 197 transitions. [2024-06-21 18:48:07,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 241 transitions, 3028 flow [2024-06-21 18:48:07,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 241 transitions, 2901 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-21 18:48:07,986 INFO L231 Difference]: Finished difference. Result has 120 places, 200 transitions, 2505 flow [2024-06-21 18:48:07,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2505, PETRI_PLACES=120, PETRI_TRANSITIONS=200} [2024-06-21 18:48:07,986 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-21 18:48:07,987 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 200 transitions, 2505 flow [2024-06-21 18:48:07,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:48:07,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:48:07,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:48:07,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:48:07,987 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 18:48:07,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:48:07,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1325079377, now seen corresponding path program 1 times [2024-06-21 18:48:07,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:48:07,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305881576] [2024-06-21 18:48:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:48:07,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:48:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:48:10,210 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 18:48:10,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:48:10,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305881576] [2024-06-21 18:48:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305881576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:48:10,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:48:10,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:48:10,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954469106] [2024-06-21 18:48:10,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:48:10,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:48:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:48:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:48:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:48:10,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-21 18:48:10,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 200 transitions, 2505 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 18:48:10,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:48:10,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-21 18:48:10,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:48:12,904 INFO L124 PetriNetUnfolderBase]: 14825/20268 cut-off events. [2024-06-21 18:48:12,905 INFO L125 PetriNetUnfolderBase]: For 265238/265238 co-relation queries the response was YES. [2024-06-21 18:48:13,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103704 conditions, 20268 events. 14825/20268 cut-off events. For 265238/265238 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 107596 event pairs, 6996 based on Foata normal form. 6/20271 useless extension candidates. Maximal degree in co-relation 103654. Up to 19916 conditions per place. [2024-06-21 18:48:13,111 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 213 selfloop transitions, 23 changer transitions 0/241 dead transitions. [2024-06-21 18:48:13,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 241 transitions, 3167 flow [2024-06-21 18:48:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:48:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:48:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-21 18:48:13,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42788461538461536 [2024-06-21 18:48:13,113 INFO L175 Difference]: Start difference. First operand has 120 places, 200 transitions, 2505 flow. Second operand 8 states and 178 transitions. [2024-06-21 18:48:13,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 241 transitions, 3167 flow [2024-06-21 18:48:13,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 241 transitions, 2869 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-21 18:48:13,363 INFO L231 Difference]: Finished difference. Result has 122 places, 203 transitions, 2321 flow [2024-06-21 18:48:13,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2321, PETRI_PLACES=122, PETRI_TRANSITIONS=203} [2024-06-21 18:48:13,364 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 67 predicate places. [2024-06-21 18:48:13,364 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 203 transitions, 2321 flow [2024-06-21 18:48:13,364 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 18:48:13,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:48:13,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:48:13,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:48:13,365 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 18:48:13,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:48:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1560425342, now seen corresponding path program 1 times [2024-06-21 18:48:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:48:13,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051663844] [2024-06-21 18:48:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:48:13,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:48:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:48:14,422 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 18:48:14,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:48:14,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051663844] [2024-06-21 18:48:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051663844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:48:14,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:48:14,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:48:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418573038] [2024-06-21 18:48:14,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:48:14,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:48:14,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:48:14,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:48:14,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:48:14,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-21 18:48:14,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 203 transitions, 2321 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 18:48:14,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:48:14,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-21 18:48:14,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:48:17,211 INFO L124 PetriNetUnfolderBase]: 14818/20463 cut-off events. [2024-06-21 18:48:17,212 INFO L125 PetriNetUnfolderBase]: For 283923/283923 co-relation queries the response was YES. [2024-06-21 18:48:17,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106626 conditions, 20463 events. 14818/20463 cut-off events. For 283923/283923 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 109846 event pairs, 7095 based on Foata normal form. 2/20462 useless extension candidates. Maximal degree in co-relation 106575. Up to 19973 conditions per place. [2024-06-21 18:48:17,400 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 203 selfloop transitions, 12 changer transitions 0/220 dead transitions. [2024-06-21 18:48:17,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 220 transitions, 2843 flow [2024-06-21 18:48:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:48:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:48:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-21 18:48:17,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2024-06-21 18:48:17,402 INFO L175 Difference]: Start difference. First operand has 122 places, 203 transitions, 2321 flow. Second operand 5 states and 111 transitions. [2024-06-21 18:48:17,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 220 transitions, 2843 flow [2024-06-21 18:48:17,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 220 transitions, 2755 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-21 18:48:17,684 INFO L231 Difference]: Finished difference. Result has 121 places, 207 transitions, 2322 flow [2024-06-21 18:48:17,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2322, PETRI_PLACES=121, PETRI_TRANSITIONS=207} [2024-06-21 18:48:17,684 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-06-21 18:48:17,685 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 207 transitions, 2322 flow [2024-06-21 18:48:17,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 18:48:17,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:48:17,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:48:17,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:48:17,685 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 18:48:17,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:48:17,686 INFO L85 PathProgramCache]: Analyzing trace with hash -983095834, now seen corresponding path program 1 times [2024-06-21 18:48:17,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:48:17,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405242445] [2024-06-21 18:48:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:48:17,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:48:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:48:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:48:19,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:48:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405242445] [2024-06-21 18:48:19,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405242445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:48:19,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:48:19,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:48:19,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880353165] [2024-06-21 18:48:19,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:48:19,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:48:19,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:48:19,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:48:19,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:48:19,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:48:19,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 207 transitions, 2322 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:48:19,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:48:19,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:48:19,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:48:22,325 INFO L124 PetriNetUnfolderBase]: 14232/19756 cut-off events. [2024-06-21 18:48:22,325 INFO L125 PetriNetUnfolderBase]: For 315260/315304 co-relation queries the response was YES. [2024-06-21 18:48:22,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108849 conditions, 19756 events. 14232/19756 cut-off events. For 315260/315304 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 109019 event pairs, 6759 based on Foata normal form. 20/19763 useless extension candidates. Maximal degree in co-relation 108796. Up to 18942 conditions per place. [2024-06-21 18:48:22,500 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 156 selfloop transitions, 79 changer transitions 0/242 dead transitions. [2024-06-21 18:48:22,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 242 transitions, 2973 flow [2024-06-21 18:48:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:48:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:48:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-21 18:48:22,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-21 18:48:22,502 INFO L175 Difference]: Start difference. First operand has 121 places, 207 transitions, 2322 flow. Second operand 8 states and 184 transitions. [2024-06-21 18:48:22,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 242 transitions, 2973 flow [2024-06-21 18:48:22,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 242 transitions, 2864 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-21 18:48:22,940 INFO L231 Difference]: Finished difference. Result has 125 places, 211 transitions, 2483 flow [2024-06-21 18:48:22,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2483, PETRI_PLACES=125, PETRI_TRANSITIONS=211} [2024-06-21 18:48:22,941 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-21 18:48:22,941 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 211 transitions, 2483 flow [2024-06-21 18:48:22,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:48:22,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:48:22,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:48:22,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:48:22,942 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 18:48:22,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:48:22,942 INFO L85 PathProgramCache]: Analyzing trace with hash 668468892, now seen corresponding path program 2 times [2024-06-21 18:48:22,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:48:22,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529206382] [2024-06-21 18:48:22,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:48:22,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:48:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:48:24,451 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 18:48:24,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:48:24,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529206382] [2024-06-21 18:48:24,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529206382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:48:24,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:48:24,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:48:24,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253262120] [2024-06-21 18:48:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:48:24,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:48:24,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:48:24,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:48:24,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:48:24,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:48:24,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 211 transitions, 2483 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:48:24,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:48:24,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:48:24,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:48:27,687 INFO L124 PetriNetUnfolderBase]: 14254/19787 cut-off events. [2024-06-21 18:48:27,687 INFO L125 PetriNetUnfolderBase]: For 357522/357546 co-relation queries the response was YES. [2024-06-21 18:48:27,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114308 conditions, 19787 events. 14254/19787 cut-off events. For 357522/357546 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 109083 event pairs, 6763 based on Foata normal form. 19/19793 useless extension candidates. Maximal degree in co-relation 114255. Up to 18899 conditions per place. [2024-06-21 18:48:27,895 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 144 selfloop transitions, 95 changer transitions 0/246 dead transitions. [2024-06-21 18:48:27,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 246 transitions, 3152 flow [2024-06-21 18:48:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:48:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:48:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-21 18:48:27,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44711538461538464 [2024-06-21 18:48:27,898 INFO L175 Difference]: Start difference. First operand has 125 places, 211 transitions, 2483 flow. Second operand 8 states and 186 transitions. [2024-06-21 18:48:27,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 246 transitions, 3152 flow [2024-06-21 18:48:28,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 246 transitions, 2976 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-21 18:48:28,304 INFO L231 Difference]: Finished difference. Result has 128 places, 215 transitions, 2599 flow [2024-06-21 18:48:28,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2599, PETRI_PLACES=128, PETRI_TRANSITIONS=215} [2024-06-21 18:48:28,304 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-21 18:48:28,305 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 215 transitions, 2599 flow [2024-06-21 18:48:28,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:48:28,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:48:28,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:48:28,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:48:28,305 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 18:48:28,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:48:28,306 INFO L85 PathProgramCache]: Analyzing trace with hash 668474844, now seen corresponding path program 1 times [2024-06-21 18:48:28,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:48:28,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922344068] [2024-06-21 18:48:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:48:28,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:48:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:48:29,768 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 18:48:29,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:48:29,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922344068] [2024-06-21 18:48:29,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922344068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:48:29,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:48:29,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:48:29,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140549002] [2024-06-21 18:48:29,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:48:29,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:48:29,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:48:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:48:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:48:29,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-21 18:48:29,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 215 transitions, 2599 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 18:48:29,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:48:29,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-21 18:48:29,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:48:33,090 INFO L124 PetriNetUnfolderBase]: 14940/20559 cut-off events. [2024-06-21 18:48:33,091 INFO L125 PetriNetUnfolderBase]: For 399255/399255 co-relation queries the response was YES. [2024-06-21 18:48:33,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120629 conditions, 20559 events. 14940/20559 cut-off events. For 399255/399255 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 109457 event pairs, 6143 based on Foata normal form. 9/20555 useless extension candidates. Maximal degree in co-relation 120575. Up to 19626 conditions per place. [2024-06-21 18:48:33,268 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 160 selfloop transitions, 125 changer transitions 0/290 dead transitions. [2024-06-21 18:48:33,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 290 transitions, 3862 flow [2024-06-21 18:48:33,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:48:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:48:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-21 18:48:33,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639423076923077 [2024-06-21 18:48:33,271 INFO L175 Difference]: Start difference. First operand has 128 places, 215 transitions, 2599 flow. Second operand 8 states and 193 transitions. [2024-06-21 18:48:33,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 290 transitions, 3862 flow [2024-06-21 18:48:33,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 290 transitions, 3582 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-21 18:48:33,541 INFO L231 Difference]: Finished difference. Result has 131 places, 249 transitions, 3149 flow [2024-06-21 18:48:33,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3149, PETRI_PLACES=131, PETRI_TRANSITIONS=249} [2024-06-21 18:48:33,541 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-21 18:48:33,542 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 249 transitions, 3149 flow [2024-06-21 18:48:33,542 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 18:48:33,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:48:33,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:48:33,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 18:48:33,542 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 18:48:33,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:48:33,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1735281106, now seen corresponding path program 3 times [2024-06-21 18:48:33,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:48:33,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238947597] [2024-06-21 18:48:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:48:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:48:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:48:35,066 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 18:48:35,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:48:35,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238947597] [2024-06-21 18:48:35,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238947597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:48:35,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:48:35,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:48:35,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370545755] [2024-06-21 18:48:35,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:48:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:48:35,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:48:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:48:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:48:35,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:48:35,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 249 transitions, 3149 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:48:35,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:48:35,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:48:35,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand