./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix007.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix007.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix007.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix007.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 18:26:43,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:26:43,609 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:26:43,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:26:43,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:26:43,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:26:43,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:26:43,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:26:43,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:26:43,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:26:43,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:26:43,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:26:43,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:26:43,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:26:43,655 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:26:43,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:26:43,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:26:43,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:26:43,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:26:43,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:26:43,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:26:43,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:26:43,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:26:43,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:26:43,658 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:26:43,658 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:26:43,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:26:43,659 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:26:43,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:26:43,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:26:43,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:26:43,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:26:43,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:26:43,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:26:43,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:26:43,662 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:26:43,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:26:43,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:26:43,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:26:43,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:26:43,663 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:26:43,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:26:43,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:26:43,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:26:43,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:26:43,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:26:43,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:26:43,915 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:26:43,916 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:26:43,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix007.opt.i [2024-06-21 18:26:45,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:26:45,363 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:26:45,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix007.opt.i [2024-06-21 18:26:45,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30d309db/99148fd7586c4759aebcb2f5e084a202/FLAG323f5fde7 [2024-06-21 18:26:45,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30d309db/99148fd7586c4759aebcb2f5e084a202 [2024-06-21 18:26:45,394 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:26:45,395 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:26:45,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix007.opt.yml/witness.yml [2024-06-21 18:26:45,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:26:45,508 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:26:45,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:26:45,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:26:45,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:26:45,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:26:45" (1/2) ... [2024-06-21 18:26:45,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d23771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:26:45, skipping insertion in model container [2024-06-21 18:26:45,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:26:45" (1/2) ... [2024-06-21 18:26:45,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d80bd8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:26:45, skipping insertion in model container [2024-06-21 18:26:45,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:26:45" (2/2) ... [2024-06-21 18:26:45,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d23771 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:45, skipping insertion in model container [2024-06-21 18:26:45,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:26:45" (2/2) ... [2024-06-21 18:26:45,521 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:26:45,556 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:26:45,558 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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 )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 18:26:45,558 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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 )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 18:26:45,558 INFO L97 edCorrectnessWitness]: Location invariant before [L877-L877] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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 )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 18:26:45,558 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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 )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 18:26:45,559 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:26:45,559 INFO L106 edCorrectnessWitness]: ghost_update [L870-L870] multithreaded = 1; [2024-06-21 18:26:45,620 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:26:45,969 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:26:45,988 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 18:26:46,181 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:26:46,241 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:26:46,241 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46 WrapperNode [2024-06-21 18:26:46,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:26:46,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:26:46,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:26:46,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:26:46,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,313 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 162 [2024-06-21 18:26:46,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:26:46,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:26:46,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:26:46,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:26:46,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,330 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,366 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 18:26:46,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:26:46,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:26:46,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:26:46,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:26:46,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (1/1) ... [2024-06-21 18:26:46,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:26:46,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:26:46,466 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 18:26:46,488 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 18:26:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:26:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:26:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:26:46,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:26:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:26:46,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:26:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 18:26:46,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 18:26:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 18:26:46,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 18:26:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:26:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:26:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:26:46,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:26:46,510 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 18:26:46,657 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:26:46,659 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:26:47,147 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:26:47,147 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:26:47,400 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:26:47,401 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:26:47,401 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:26:47 BoogieIcfgContainer [2024-06-21 18:26:47,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:26:47,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:26:47,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:26:47,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:26:47,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:26:45" (1/4) ... [2024-06-21 18:26:47,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355f8dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:26:47, skipping insertion in model container [2024-06-21 18:26:47,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:26:45" (2/4) ... [2024-06-21 18:26:47,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355f8dba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:26:47, skipping insertion in model container [2024-06-21 18:26:47,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:26:46" (3/4) ... [2024-06-21 18:26:47,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355f8dba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:26:47, skipping insertion in model container [2024-06-21 18:26:47,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:26:47" (4/4) ... [2024-06-21 18:26:47,411 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.opt.i [2024-06-21 18:26:47,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:26:47,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 18:26:47,427 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:26:47,486 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:26:47,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 18:26:47,568 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-21 18:26:47,568 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:26:47,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 18:26:47,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 18:26:47,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-21 18:26:47,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:26:47,595 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;@3e8c454d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:26:47,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 18:26:47,600 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:26:47,601 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 18:26:47,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:26:47,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:26:47,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:26:47,602 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 18:26:47,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:26:47,610 INFO L85 PathProgramCache]: Analyzing trace with hash 422091523, now seen corresponding path program 1 times [2024-06-21 18:26:47,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:26:47,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307729625] [2024-06-21 18:26:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:26:47,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:26:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:26:49,280 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 18:26:49,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:26:49,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307729625] [2024-06-21 18:26:49,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307729625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:26:49,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:26:49,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:26:49,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966793395] [2024-06-21 18:26:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:26:49,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:26:49,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:26:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:26:49,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:26:49,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-21 18:26:49,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 18:26:49,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:26:49,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-21 18:26:49,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:26:51,017 INFO L124 PetriNetUnfolderBase]: 7102/9914 cut-off events. [2024-06-21 18:26:51,017 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-21 18:26:51,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19865 conditions, 9914 events. 7102/9914 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 55833 event pairs, 5270 based on Foata normal form. 1/9748 useless extension candidates. Maximal degree in co-relation 19852. Up to 9684 conditions per place. [2024-06-21 18:26:51,098 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-21 18:26:51,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 229 flow [2024-06-21 18:26:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:26:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:26:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-21 18:26:51,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-06-21 18:26:51,112 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 102 transitions. [2024-06-21 18:26:51,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 229 flow [2024-06-21 18:26:51,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:26:51,121 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-21 18:26:51,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-21 18:26:51,128 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-21 18:26:51,128 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-21 18:26:51,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 18:26:51,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:26:51,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:26:51,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:26:51,130 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 18:26:51,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:26:51,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1904208308, now seen corresponding path program 1 times [2024-06-21 18:26:51,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:26:51,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843302974] [2024-06-21 18:26:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:26:51,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:26:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:26:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:26:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:26:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843302974] [2024-06-21 18:26:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843302974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:26:52,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:26:52,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:26:52,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989789152] [2024-06-21 18:26:52,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:26:52,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:26:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:26:52,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:26:52,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:26:52,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-21 18:26:52,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 18:26:52,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:26:52,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-21 18:26:52,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:26:54,095 INFO L124 PetriNetUnfolderBase]: 7092/9902 cut-off events. [2024-06-21 18:26:54,095 INFO L125 PetriNetUnfolderBase]: For 2109/2109 co-relation queries the response was YES. [2024-06-21 18:26:54,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22629 conditions, 9902 events. 7092/9902 cut-off events. For 2109/2109 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 55723 event pairs, 4490 based on Foata normal form. 4/9866 useless extension candidates. Maximal degree in co-relation 22617. Up to 9649 conditions per place. [2024-06-21 18:26:54,163 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 52 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-21 18:26:54,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 321 flow [2024-06-21 18:26:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:26:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:26:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-21 18:26:54,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6273584905660378 [2024-06-21 18:26:54,166 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 133 transitions. [2024-06-21 18:26:54,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 321 flow [2024-06-21 18:26:54,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:26:54,169 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-21 18:26:54,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-21 18:26:54,170 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-21 18:26:54,170 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-21 18:26:54,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 18:26:54,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:26:54,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:26:54,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:26:54,172 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 18:26:54,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:26:54,172 INFO L85 PathProgramCache]: Analyzing trace with hash 343462371, now seen corresponding path program 1 times [2024-06-21 18:26:54,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:26:54,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067031863] [2024-06-21 18:26:54,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:26:54,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:26:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:26:56,198 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 18:26:56,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:26:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067031863] [2024-06-21 18:26:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067031863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:26:56,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:26:56,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:26:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953803028] [2024-06-21 18:26:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:26:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:26:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:26:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:26:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:26:56,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-21 18:26:56,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 18:26:56,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:26:56,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-21 18:26:56,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:26:58,026 INFO L124 PetriNetUnfolderBase]: 9006/12500 cut-off events. [2024-06-21 18:26:58,027 INFO L125 PetriNetUnfolderBase]: For 7145/7145 co-relation queries the response was YES. [2024-06-21 18:26:58,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31643 conditions, 12500 events. 9006/12500 cut-off events. For 7145/7145 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 68766 event pairs, 4478 based on Foata normal form. 8/12456 useless extension candidates. Maximal degree in co-relation 31629. Up to 12137 conditions per place. [2024-06-21 18:26:58,109 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 70 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-21 18:26:58,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 486 flow [2024-06-21 18:26:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:26:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:26:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-21 18:26:58,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-21 18:26:58,112 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 186 transitions. [2024-06-21 18:26:58,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 486 flow [2024-06-21 18:26:58,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 458 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-21 18:26:58,116 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 243 flow [2024-06-21 18:26:58,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=156, 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=6, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-21 18:26:58,117 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-21 18:26:58,118 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 243 flow [2024-06-21 18:26:58,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 18:26:58,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:26:58,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:26:58,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:26:58,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:26:58,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:26:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash 146390, now seen corresponding path program 1 times [2024-06-21 18:26:58,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:26:58,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255758587] [2024-06-21 18:26:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:26:58,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:26:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:26:59,631 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 18:26:59,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:26:59,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255758587] [2024-06-21 18:26:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255758587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:26:59,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:26:59,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:26:59,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027536766] [2024-06-21 18:26:59,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:26:59,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:26:59,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:26:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:26:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:26:59,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:26:59,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:26:59,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:26:59,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:26:59,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:01,534 INFO L124 PetriNetUnfolderBase]: 8997/12452 cut-off events. [2024-06-21 18:27:01,534 INFO L125 PetriNetUnfolderBase]: For 14756/14756 co-relation queries the response was YES. [2024-06-21 18:27:01,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34827 conditions, 12452 events. 8997/12452 cut-off events. For 14756/14756 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 68789 event pairs, 6089 based on Foata normal form. 3/12425 useless extension candidates. Maximal degree in co-relation 34810. Up to 12194 conditions per place. [2024-06-21 18:27:01,617 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 59 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-21 18:27:01,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 460 flow [2024-06-21 18:27:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:27:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:27:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-21 18:27:01,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2024-06-21 18:27:01,619 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 243 flow. Second operand 5 states and 133 transitions. [2024-06-21 18:27:01,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 460 flow [2024-06-21 18:27:01,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 420 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 18:27:01,627 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 286 flow [2024-06-21 18:27:01,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-06-21 18:27:01,629 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-21 18:27:01,629 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 286 flow [2024-06-21 18:27:01,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:01,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:01,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:01,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:27:01,630 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 18:27:01,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash -21377988, now seen corresponding path program 1 times [2024-06-21 18:27:01,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:01,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022827972] [2024-06-21 18:27:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:01,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:03,418 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 18:27:03,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022827972] [2024-06-21 18:27:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022827972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:03,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:03,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:27:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904744666] [2024-06-21 18:27:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:03,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:27:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:27:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:27:03,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:27:03,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 18:27:03,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:03,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:27:03,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:05,447 INFO L124 PetriNetUnfolderBase]: 10909/15010 cut-off events. [2024-06-21 18:27:05,448 INFO L125 PetriNetUnfolderBase]: For 26042/26042 co-relation queries the response was YES. [2024-06-21 18:27:05,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45216 conditions, 15010 events. 10909/15010 cut-off events. For 26042/26042 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 82437 event pairs, 7093 based on Foata normal form. 5/14969 useless extension candidates. Maximal degree in co-relation 45195. Up to 14669 conditions per place. [2024-06-21 18:27:05,597 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 73 selfloop transitions, 24 changer transitions 0/104 dead transitions. [2024-06-21 18:27:05,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 660 flow [2024-06-21 18:27:05,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:27:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:27:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-21 18:27:05,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062893081761006 [2024-06-21 18:27:05,604 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 286 flow. Second operand 6 states and 161 transitions. [2024-06-21 18:27:05,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 660 flow [2024-06-21 18:27:05,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 104 transitions, 637 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 18:27:05,616 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 439 flow [2024-06-21 18:27:05,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2024-06-21 18:27:05,625 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-21 18:27:05,626 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 439 flow [2024-06-21 18:27:05,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 18:27:05,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:05,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:05,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:27:05,627 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 18:27:05,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1911168831, now seen corresponding path program 1 times [2024-06-21 18:27:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:05,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456753335] [2024-06-21 18:27:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:05,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:27:06,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:06,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456753335] [2024-06-21 18:27:06,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456753335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:06,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:06,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:27:06,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940943086] [2024-06-21 18:27:06,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:06,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:27:06,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:06,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:27:06,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:27:06,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:27:06,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 439 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:06,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:06,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:27:06,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:08,721 INFO L124 PetriNetUnfolderBase]: 10701/14766 cut-off events. [2024-06-21 18:27:08,722 INFO L125 PetriNetUnfolderBase]: For 41855/41875 co-relation queries the response was YES. [2024-06-21 18:27:08,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50247 conditions, 14766 events. 10701/14766 cut-off events. For 41855/41875 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 82654 event pairs, 6318 based on Foata normal form. 11/14562 useless extension candidates. Maximal degree in co-relation 50221. Up to 14323 conditions per place. [2024-06-21 18:27:08,808 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 90 selfloop transitions, 31 changer transitions 0/132 dead transitions. [2024-06-21 18:27:08,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 132 transitions, 955 flow [2024-06-21 18:27:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:27:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:27:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-21 18:27:08,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2024-06-21 18:27:08,811 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 439 flow. Second operand 6 states and 180 transitions. [2024-06-21 18:27:08,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 132 transitions, 955 flow [2024-06-21 18:27:08,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 132 transitions, 944 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-21 18:27:08,830 INFO L231 Difference]: Finished difference. Result has 78 places, 96 transitions, 671 flow [2024-06-21 18:27:08,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=671, PETRI_PLACES=78, PETRI_TRANSITIONS=96} [2024-06-21 18:27:08,834 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-21 18:27:08,834 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 96 transitions, 671 flow [2024-06-21 18:27:08,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:08,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:08,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:08,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:27:08,835 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 18:27:08,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:08,835 INFO L85 PathProgramCache]: Analyzing trace with hash -668437361, now seen corresponding path program 2 times [2024-06-21 18:27:08,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:08,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337536159] [2024-06-21 18:27:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:08,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:10,382 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 18:27:10,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:10,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337536159] [2024-06-21 18:27:10,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337536159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:10,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:10,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:27:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967156033] [2024-06-21 18:27:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:10,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:27:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:27:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:27:10,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:27:10,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 671 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:10,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:10,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:27:10,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:12,525 INFO L124 PetriNetUnfolderBase]: 10777/14874 cut-off events. [2024-06-21 18:27:12,525 INFO L125 PetriNetUnfolderBase]: For 57491/57517 co-relation queries the response was YES. [2024-06-21 18:27:12,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54918 conditions, 14874 events. 10777/14874 cut-off events. For 57491/57517 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 83271 event pairs, 6326 based on Foata normal form. 15/14671 useless extension candidates. Maximal degree in co-relation 54888. Up to 14397 conditions per place. [2024-06-21 18:27:12,638 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 82 selfloop transitions, 47 changer transitions 0/140 dead transitions. [2024-06-21 18:27:12,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 140 transitions, 1230 flow [2024-06-21 18:27:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:27:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:27:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-21 18:27:12,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220125786163522 [2024-06-21 18:27:12,640 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 671 flow. Second operand 6 states and 166 transitions. [2024-06-21 18:27:12,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 140 transitions, 1230 flow [2024-06-21 18:27:12,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 140 transitions, 1149 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-21 18:27:12,698 INFO L231 Difference]: Finished difference. Result has 84 places, 113 transitions, 905 flow [2024-06-21 18:27:12,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=905, PETRI_PLACES=84, PETRI_TRANSITIONS=113} [2024-06-21 18:27:12,699 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2024-06-21 18:27:12,699 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 113 transitions, 905 flow [2024-06-21 18:27:12,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:12,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:12,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:12,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:27:12,700 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 18:27:12,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash 167551729, now seen corresponding path program 3 times [2024-06-21 18:27:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:12,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567042423] [2024-06-21 18:27:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:27:14,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:14,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567042423] [2024-06-21 18:27:14,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567042423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:14,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:14,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:27:14,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106806463] [2024-06-21 18:27:14,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:14,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:27:14,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:14,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:27:14,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:27:14,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:27:14,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 113 transitions, 905 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:14,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:14,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:27:14,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:16,447 INFO L124 PetriNetUnfolderBase]: 10761/14851 cut-off events. [2024-06-21 18:27:16,448 INFO L125 PetriNetUnfolderBase]: For 63779/63789 co-relation queries the response was YES. [2024-06-21 18:27:16,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55446 conditions, 14851 events. 10761/14851 cut-off events. For 63779/63789 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 83084 event pairs, 6318 based on Foata normal form. 5/14638 useless extension candidates. Maximal degree in co-relation 55411. Up to 14381 conditions per place. [2024-06-21 18:27:16,568 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 80 selfloop transitions, 48 changer transitions 0/139 dead transitions. [2024-06-21 18:27:16,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 139 transitions, 1253 flow [2024-06-21 18:27:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:27:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:27:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-21 18:27:16,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062893081761006 [2024-06-21 18:27:16,570 INFO L175 Difference]: Start difference. First operand has 84 places, 113 transitions, 905 flow. Second operand 6 states and 161 transitions. [2024-06-21 18:27:16,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 139 transitions, 1253 flow [2024-06-21 18:27:16,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 1137 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-06-21 18:27:16,692 INFO L231 Difference]: Finished difference. Result has 89 places, 113 transitions, 902 flow [2024-06-21 18:27:16,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=902, PETRI_PLACES=89, PETRI_TRANSITIONS=113} [2024-06-21 18:27:16,692 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-21 18:27:16,693 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 113 transitions, 902 flow [2024-06-21 18:27:16,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:16,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:16,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:16,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:27:16,694 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 18:27:16,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash -95049247, now seen corresponding path program 1 times [2024-06-21 18:27:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:16,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477359792] [2024-06-21 18:27:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:17,938 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 18:27:17,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:17,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477359792] [2024-06-21 18:27:17,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477359792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:17,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:17,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:17,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368288138] [2024-06-21 18:27:17,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:17,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:17,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:18,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:27:18,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 113 transitions, 902 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:18,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:18,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:27:18,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:19,919 INFO L124 PetriNetUnfolderBase]: 10820/14972 cut-off events. [2024-06-21 18:27:19,920 INFO L125 PetriNetUnfolderBase]: For 72499/72513 co-relation queries the response was YES. [2024-06-21 18:27:19,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57055 conditions, 14972 events. 10820/14972 cut-off events. For 72499/72513 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 83875 event pairs, 6084 based on Foata normal form. 7/14796 useless extension candidates. Maximal degree in co-relation 57016. Up to 14453 conditions per place. [2024-06-21 18:27:20,026 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 136 selfloop transitions, 44 changer transitions 0/191 dead transitions. [2024-06-21 18:27:20,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 191 transitions, 1678 flow [2024-06-21 18:27:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:27:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:27:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-06-21 18:27:20,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303983228511531 [2024-06-21 18:27:20,030 INFO L175 Difference]: Start difference. First operand has 89 places, 113 transitions, 902 flow. Second operand 9 states and 253 transitions. [2024-06-21 18:27:20,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 191 transitions, 1678 flow [2024-06-21 18:27:20,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 191 transitions, 1601 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-21 18:27:20,109 INFO L231 Difference]: Finished difference. Result has 97 places, 134 transitions, 1120 flow [2024-06-21 18:27:20,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1120, PETRI_PLACES=97, PETRI_TRANSITIONS=134} [2024-06-21 18:27:20,110 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-06-21 18:27:20,110 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 134 transitions, 1120 flow [2024-06-21 18:27:20,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:20,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:20,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:20,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:27:20,111 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 18:27:20,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash 856407249, now seen corresponding path program 2 times [2024-06-21 18:27:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:20,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672636237] [2024-06-21 18:27:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:20,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:21,677 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 18:27:21,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672636237] [2024-06-21 18:27:21,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672636237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:21,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:21,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:21,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191709077] [2024-06-21 18:27:21,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:21,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:21,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:21,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:21,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:21,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:27:21,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 134 transitions, 1120 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:21,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:21,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:27:21,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:23,879 INFO L124 PetriNetUnfolderBase]: 10634/14855 cut-off events. [2024-06-21 18:27:23,880 INFO L125 PetriNetUnfolderBase]: For 90747/90761 co-relation queries the response was YES. [2024-06-21 18:27:23,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61077 conditions, 14855 events. 10634/14855 cut-off events. For 90747/90761 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 83376 event pairs, 5054 based on Foata normal form. 9/14768 useless extension candidates. Maximal degree in co-relation 61036. Up to 14268 conditions per place. [2024-06-21 18:27:23,979 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 135 selfloop transitions, 51 changer transitions 0/197 dead transitions. [2024-06-21 18:27:23,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 197 transitions, 1880 flow [2024-06-21 18:27:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:27:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:27:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-21 18:27:23,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390835579514824 [2024-06-21 18:27:23,981 INFO L175 Difference]: Start difference. First operand has 97 places, 134 transitions, 1120 flow. Second operand 7 states and 200 transitions. [2024-06-21 18:27:23,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 197 transitions, 1880 flow [2024-06-21 18:27:24,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 197 transitions, 1715 flow, removed 62 selfloop flow, removed 3 redundant places. [2024-06-21 18:27:24,051 INFO L231 Difference]: Finished difference. Result has 102 places, 158 transitions, 1364 flow [2024-06-21 18:27:24,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1364, PETRI_PLACES=102, PETRI_TRANSITIONS=158} [2024-06-21 18:27:24,051 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-21 18:27:24,052 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 158 transitions, 1364 flow [2024-06-21 18:27:24,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:24,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:24,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:24,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:27:24,052 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 18:27:24,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash 856527219, now seen corresponding path program 3 times [2024-06-21 18:27:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:24,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005377837] [2024-06-21 18:27:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:25,516 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 18:27:25,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:25,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005377837] [2024-06-21 18:27:25,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005377837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:25,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:25,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:25,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006569284] [2024-06-21 18:27:25,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:25,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:25,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:25,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:25,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:27:25,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 158 transitions, 1364 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:25,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:25,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:27:25,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:27,777 INFO L124 PetriNetUnfolderBase]: 10681/14931 cut-off events. [2024-06-21 18:27:27,778 INFO L125 PetriNetUnfolderBase]: For 102613/102633 co-relation queries the response was YES. [2024-06-21 18:27:27,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62767 conditions, 14931 events. 10681/14931 cut-off events. For 102613/102633 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 83926 event pairs, 5067 based on Foata normal form. 11/14845 useless extension candidates. Maximal degree in co-relation 62723. Up to 14144 conditions per place. [2024-06-21 18:27:27,876 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 106 selfloop transitions, 100 changer transitions 0/217 dead transitions. [2024-06-21 18:27:27,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 217 transitions, 2206 flow [2024-06-21 18:27:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:27:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:27:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-21 18:27:27,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606469002695418 [2024-06-21 18:27:27,877 INFO L175 Difference]: Start difference. First operand has 102 places, 158 transitions, 1364 flow. Second operand 7 states and 208 transitions. [2024-06-21 18:27:27,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 217 transitions, 2206 flow [2024-06-21 18:27:27,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 217 transitions, 2115 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-21 18:27:27,969 INFO L231 Difference]: Finished difference. Result has 108 places, 174 transitions, 1705 flow [2024-06-21 18:27:27,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1705, PETRI_PLACES=108, PETRI_TRANSITIONS=174} [2024-06-21 18:27:27,970 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-21 18:27:27,970 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 174 transitions, 1705 flow [2024-06-21 18:27:27,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:27,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:27,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:27,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:27:27,971 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 18:27:27,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:27,971 INFO L85 PathProgramCache]: Analyzing trace with hash 856527405, now seen corresponding path program 1 times [2024-06-21 18:27:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:27,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099094736] [2024-06-21 18:27:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:27,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:29,367 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 18:27:29,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:29,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099094736] [2024-06-21 18:27:29,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099094736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:29,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:29,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:29,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815866640] [2024-06-21 18:27:29,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:29,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:29,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:29,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:29,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:27:29,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 174 transitions, 1705 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:27:29,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:29,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:27:29,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:31,734 INFO L124 PetriNetUnfolderBase]: 11469/15846 cut-off events. [2024-06-21 18:27:31,734 INFO L125 PetriNetUnfolderBase]: For 136855/136866 co-relation queries the response was YES. [2024-06-21 18:27:31,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70680 conditions, 15846 events. 11469/15846 cut-off events. For 136855/136866 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 87138 event pairs, 6182 based on Foata normal form. 12/15848 useless extension candidates. Maximal degree in co-relation 70634. Up to 15067 conditions per place. [2024-06-21 18:27:31,837 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 174 selfloop transitions, 66 changer transitions 0/247 dead transitions. [2024-06-21 18:27:31,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 247 transitions, 2817 flow [2024-06-21 18:27:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:27:31,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:27:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-06-21 18:27:31,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-21 18:27:31,839 INFO L175 Difference]: Start difference. First operand has 108 places, 174 transitions, 1705 flow. Second operand 7 states and 212 transitions. [2024-06-21 18:27:31,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 247 transitions, 2817 flow [2024-06-21 18:27:32,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 247 transitions, 2682 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-21 18:27:32,058 INFO L231 Difference]: Finished difference. Result has 115 places, 195 transitions, 1983 flow [2024-06-21 18:27:32,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1983, PETRI_PLACES=115, PETRI_TRANSITIONS=195} [2024-06-21 18:27:32,058 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-21 18:27:32,059 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 195 transitions, 1983 flow [2024-06-21 18:27:32,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:27:32,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:32,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:32,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:27:32,060 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 18:27:32,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash 753160225, now seen corresponding path program 4 times [2024-06-21 18:27:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:32,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892721193] [2024-06-21 18:27:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:32,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:33,727 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 18:27:33,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:33,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892721193] [2024-06-21 18:27:33,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892721193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:33,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:33,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:33,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002084746] [2024-06-21 18:27:33,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:33,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:33,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:33,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:33,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:27:33,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 195 transitions, 1983 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:33,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:33,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:27:33,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:36,247 INFO L124 PetriNetUnfolderBase]: 10989/15354 cut-off events. [2024-06-21 18:27:36,247 INFO L125 PetriNetUnfolderBase]: For 147160/147262 co-relation queries the response was YES. [2024-06-21 18:27:36,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72217 conditions, 15354 events. 10989/15354 cut-off events. For 147160/147262 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 85720 event pairs, 4895 based on Foata normal form. 7/15253 useless extension candidates. Maximal degree in co-relation 72167. Up to 14666 conditions per place. [2024-06-21 18:27:36,360 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 167 selfloop transitions, 73 changer transitions 0/255 dead transitions. [2024-06-21 18:27:36,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 255 transitions, 2854 flow [2024-06-21 18:27:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:27:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:27:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-21 18:27:36,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47877358490566035 [2024-06-21 18:27:36,365 INFO L175 Difference]: Start difference. First operand has 115 places, 195 transitions, 1983 flow. Second operand 8 states and 203 transitions. [2024-06-21 18:27:36,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 255 transitions, 2854 flow [2024-06-21 18:27:36,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 255 transitions, 2729 flow, removed 54 selfloop flow, removed 1 redundant places. [2024-06-21 18:27:36,537 INFO L231 Difference]: Finished difference. Result has 122 places, 224 transitions, 2317 flow [2024-06-21 18:27:36,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2317, PETRI_PLACES=122, PETRI_TRANSITIONS=224} [2024-06-21 18:27:36,538 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-06-21 18:27:36,538 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 224 transitions, 2317 flow [2024-06-21 18:27:36,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:36,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:36,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:36,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:27:36,539 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 18:27:36,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:36,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1709082023, now seen corresponding path program 5 times [2024-06-21 18:27:36,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:36,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12525491] [2024-06-21 18:27:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:36,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:27:38,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:38,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12525491] [2024-06-21 18:27:38,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12525491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:38,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:38,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:38,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538004900] [2024-06-21 18:27:38,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:38,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:38,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:38,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:27:38,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 224 transitions, 2317 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:38,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:38,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:27:38,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:40,752 INFO L124 PetriNetUnfolderBase]: 11055/15462 cut-off events. [2024-06-21 18:27:40,752 INFO L125 PetriNetUnfolderBase]: For 163415/163530 co-relation queries the response was YES. [2024-06-21 18:27:40,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74034 conditions, 15462 events. 11055/15462 cut-off events. For 163415/163530 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 86494 event pairs, 4941 based on Foata normal form. 19/15366 useless extension candidates. Maximal degree in co-relation 73981. Up to 14542 conditions per place. [2024-06-21 18:27:40,874 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 127 selfloop transitions, 131 changer transitions 0/273 dead transitions. [2024-06-21 18:27:40,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 273 transitions, 3235 flow [2024-06-21 18:27:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:27:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:27:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-21 18:27:40,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256064690026954 [2024-06-21 18:27:40,876 INFO L175 Difference]: Start difference. First operand has 122 places, 224 transitions, 2317 flow. Second operand 7 states and 195 transitions. [2024-06-21 18:27:40,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 273 transitions, 3235 flow [2024-06-21 18:27:41,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 273 transitions, 3151 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 18:27:41,076 INFO L231 Difference]: Finished difference. Result has 126 places, 236 transitions, 2646 flow [2024-06-21 18:27:41,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2646, PETRI_PLACES=126, PETRI_TRANSITIONS=236} [2024-06-21 18:27:41,077 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-06-21 18:27:41,077 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 236 transitions, 2646 flow [2024-06-21 18:27:41,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:41,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:41,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:41,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:27:41,078 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 18:27:41,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash 753280381, now seen corresponding path program 2 times [2024-06-21 18:27:41,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:41,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479185303] [2024-06-21 18:27:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:41,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:42,767 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 18:27:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479185303] [2024-06-21 18:27:42,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479185303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:42,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:42,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:42,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343716697] [2024-06-21 18:27:42,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:42,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:42,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:42,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:42,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:42,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:27:42,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 236 transitions, 2646 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:27:42,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:42,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:27:42,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:45,458 INFO L124 PetriNetUnfolderBase]: 11895/16483 cut-off events. [2024-06-21 18:27:45,458 INFO L125 PetriNetUnfolderBase]: For 195381/195398 co-relation queries the response was YES. [2024-06-21 18:27:45,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80698 conditions, 16483 events. 11895/16483 cut-off events. For 195381/195398 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 90951 event pairs, 6116 based on Foata normal form. 20/16490 useless extension candidates. Maximal degree in co-relation 80643. Up to 15517 conditions per place. [2024-06-21 18:27:45,566 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 212 selfloop transitions, 92 changer transitions 0/311 dead transitions. [2024-06-21 18:27:45,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 311 transitions, 3969 flow [2024-06-21 18:27:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:27:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:27:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-21 18:27:45,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-21 18:27:45,568 INFO L175 Difference]: Start difference. First operand has 126 places, 236 transitions, 2646 flow. Second operand 7 states and 196 transitions. [2024-06-21 18:27:45,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 311 transitions, 3969 flow [2024-06-21 18:27:45,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 311 transitions, 3796 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-21 18:27:45,742 INFO L231 Difference]: Finished difference. Result has 133 places, 269 transitions, 3041 flow [2024-06-21 18:27:45,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3041, PETRI_PLACES=133, PETRI_TRANSITIONS=269} [2024-06-21 18:27:45,743 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 77 predicate places. [2024-06-21 18:27:45,743 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 269 transitions, 3041 flow [2024-06-21 18:27:45,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:27:45,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:45,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:45,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:27:45,744 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 18:27:45,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash 899138209, now seen corresponding path program 6 times [2024-06-21 18:27:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525426080] [2024-06-21 18:27:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:47,338 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 18:27:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525426080] [2024-06-21 18:27:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525426080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:47,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:47,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:47,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448013059] [2024-06-21 18:27:47,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:47,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:47,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:27:47,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 269 transitions, 3041 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:47,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:47,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:27:47,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:49,844 INFO L124 PetriNetUnfolderBase]: 11295/15818 cut-off events. [2024-06-21 18:27:49,844 INFO L125 PetriNetUnfolderBase]: For 213158/213250 co-relation queries the response was YES. [2024-06-21 18:27:49,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81039 conditions, 15818 events. 11295/15818 cut-off events. For 213158/213250 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 88595 event pairs, 4917 based on Foata normal form. 5/15709 useless extension candidates. Maximal degree in co-relation 80979. Up to 14820 conditions per place. [2024-06-21 18:27:50,002 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 145 selfloop transitions, 134 changer transitions 0/301 dead transitions. [2024-06-21 18:27:50,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 301 transitions, 3783 flow [2024-06-21 18:27:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:27:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:27:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-21 18:27:50,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-21 18:27:50,003 INFO L175 Difference]: Start difference. First operand has 133 places, 269 transitions, 3041 flow. Second operand 7 states and 189 transitions. [2024-06-21 18:27:50,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 301 transitions, 3783 flow [2024-06-21 18:27:50,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 301 transitions, 3618 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-21 18:27:50,305 INFO L231 Difference]: Finished difference. Result has 138 places, 269 transitions, 3162 flow [2024-06-21 18:27:50,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3162, PETRI_PLACES=138, PETRI_TRANSITIONS=269} [2024-06-21 18:27:50,306 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2024-06-21 18:27:50,306 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 269 transitions, 3162 flow [2024-06-21 18:27:50,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:27:50,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:50,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:50,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:27:50,306 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:27:50,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:50,307 INFO L85 PathProgramCache]: Analyzing trace with hash 67969495, now seen corresponding path program 3 times [2024-06-21 18:27:50,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:50,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906976283] [2024-06-21 18:27:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:50,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:51,844 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 18:27:51,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:51,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906976283] [2024-06-21 18:27:51,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906976283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:51,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:51,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:51,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956773238] [2024-06-21 18:27:51,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:51,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:51,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:51,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:51,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:51,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:27:51,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 269 transitions, 3162 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:27:51,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:51,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:27:51,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:54,375 INFO L124 PetriNetUnfolderBase]: 11961/16577 cut-off events. [2024-06-21 18:27:54,375 INFO L125 PetriNetUnfolderBase]: For 247769/247785 co-relation queries the response was YES. [2024-06-21 18:27:54,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86121 conditions, 16577 events. 11961/16577 cut-off events. For 247769/247785 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 91496 event pairs, 6213 based on Foata normal form. 21/16585 useless extension candidates. Maximal degree in co-relation 86058. Up to 15576 conditions per place. [2024-06-21 18:27:54,511 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 216 selfloop transitions, 105 changer transitions 0/328 dead transitions. [2024-06-21 18:27:54,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 328 transitions, 4462 flow [2024-06-21 18:27:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:27:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:27:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-21 18:27:54,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202156334231806 [2024-06-21 18:27:54,512 INFO L175 Difference]: Start difference. First operand has 138 places, 269 transitions, 3162 flow. Second operand 7 states and 193 transitions. [2024-06-21 18:27:54,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 328 transitions, 4462 flow [2024-06-21 18:27:54,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 328 transitions, 4257 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 18:27:54,792 INFO L231 Difference]: Finished difference. Result has 141 places, 285 transitions, 3398 flow [2024-06-21 18:27:54,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3398, PETRI_PLACES=141, PETRI_TRANSITIONS=285} [2024-06-21 18:27:54,793 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2024-06-21 18:27:54,793 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 285 transitions, 3398 flow [2024-06-21 18:27:54,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:27:54,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:54,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:54,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:27:54,794 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 18:27:54,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash 68206645, now seen corresponding path program 4 times [2024-06-21 18:27:54,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:54,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216035551] [2024-06-21 18:27:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:54,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:56,280 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 18:27:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216035551] [2024-06-21 18:27:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216035551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:56,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:27:56,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497940125] [2024-06-21 18:27:56,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:56,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:27:56,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:27:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:27:56,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:27:56,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 285 transitions, 3398 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:27:56,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:56,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:27:56,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:58,923 INFO L124 PetriNetUnfolderBase]: 11976/16600 cut-off events. [2024-06-21 18:27:58,924 INFO L125 PetriNetUnfolderBase]: For 277862/277878 co-relation queries the response was YES. [2024-06-21 18:27:58,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89244 conditions, 16600 events. 11976/16600 cut-off events. For 277862/277878 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 91742 event pairs, 6205 based on Foata normal form. 20/16607 useless extension candidates. Maximal degree in co-relation 89178. Up to 15599 conditions per place. [2024-06-21 18:27:59,057 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 199 selfloop transitions, 125 changer transitions 0/331 dead transitions. [2024-06-21 18:27:59,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 331 transitions, 4506 flow [2024-06-21 18:27:59,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:27:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:27:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-21 18:27:59,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121293800539084 [2024-06-21 18:27:59,059 INFO L175 Difference]: Start difference. First operand has 141 places, 285 transitions, 3398 flow. Second operand 7 states and 190 transitions. [2024-06-21 18:27:59,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 331 transitions, 4506 flow [2024-06-21 18:27:59,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 331 transitions, 4387 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-21 18:27:59,371 INFO L231 Difference]: Finished difference. Result has 146 places, 294 transitions, 3679 flow [2024-06-21 18:27:59,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3287, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3679, PETRI_PLACES=146, PETRI_TRANSITIONS=294} [2024-06-21 18:27:59,372 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2024-06-21 18:27:59,372 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 294 transitions, 3679 flow [2024-06-21 18:27:59,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:27:59,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:59,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:59,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:27:59,372 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 18:27:59,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:59,373 INFO L85 PathProgramCache]: Analyzing trace with hash 68215573, now seen corresponding path program 1 times [2024-06-21 18:27:59,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:59,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41443831] [2024-06-21 18:27:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:59,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:00,901 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 18:28:00,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:00,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41443831] [2024-06-21 18:28:00,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41443831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:00,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:00,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:00,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904747771] [2024-06-21 18:28:00,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:00,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:00,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:00,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:00,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:00,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:28:00,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 294 transitions, 3679 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:28:00,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:00,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:28:00,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:03,654 INFO L124 PetriNetUnfolderBase]: 11996/16646 cut-off events. [2024-06-21 18:28:03,654 INFO L125 PetriNetUnfolderBase]: For 304365/304368 co-relation queries the response was YES. [2024-06-21 18:28:03,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91245 conditions, 16646 events. 11996/16646 cut-off events. For 304365/304368 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 92461 event pairs, 6437 based on Foata normal form. 12/16651 useless extension candidates. Maximal degree in co-relation 91176. Up to 16069 conditions per place. [2024-06-21 18:28:03,810 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 298 selfloop transitions, 28 changer transitions 0/333 dead transitions. [2024-06-21 18:28:03,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 333 transitions, 4699 flow [2024-06-21 18:28:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-21 18:28:03,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693396226415094 [2024-06-21 18:28:03,811 INFO L175 Difference]: Start difference. First operand has 146 places, 294 transitions, 3679 flow. Second operand 8 states and 199 transitions. [2024-06-21 18:28:03,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 333 transitions, 4699 flow [2024-06-21 18:28:04,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 333 transitions, 4490 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:04,179 INFO L231 Difference]: Finished difference. Result has 151 places, 298 transitions, 3601 flow [2024-06-21 18:28:04,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3601, PETRI_PLACES=151, PETRI_TRANSITIONS=298} [2024-06-21 18:28:04,180 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 95 predicate places. [2024-06-21 18:28:04,180 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 298 transitions, 3601 flow [2024-06-21 18:28:04,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:28:04,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:04,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:04,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:28:04,180 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:28:04,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash -533924167, now seen corresponding path program 1 times [2024-06-21 18:28:04,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:04,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453547784] [2024-06-21 18:28:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:04,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:05,221 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 18:28:05,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:05,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453547784] [2024-06-21 18:28:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453547784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:05,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:05,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:28:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710174509] [2024-06-21 18:28:05,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:05,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:28:05,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:05,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:28:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:28:05,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:28:05,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 298 transitions, 3601 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 18:28:05,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:05,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:28:05,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:07,603 INFO L124 PetriNetUnfolderBase]: 11201/15816 cut-off events. [2024-06-21 18:28:07,603 INFO L125 PetriNetUnfolderBase]: For 328829/328832 co-relation queries the response was YES. [2024-06-21 18:28:07,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90086 conditions, 15816 events. 11201/15816 cut-off events. For 328829/328832 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 91178 event pairs, 6596 based on Foata normal form. 5/15802 useless extension candidates. Maximal degree in co-relation 90015. Up to 15148 conditions per place. [2024-06-21 18:28:07,746 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 264 selfloop transitions, 12 changer transitions 0/311 dead transitions. [2024-06-21 18:28:07,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 311 transitions, 4217 flow [2024-06-21 18:28:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:28:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:28:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-21 18:28:07,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867924528301887 [2024-06-21 18:28:07,747 INFO L175 Difference]: Start difference. First operand has 151 places, 298 transitions, 3601 flow. Second operand 5 states and 129 transitions. [2024-06-21 18:28:07,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 311 transitions, 4217 flow [2024-06-21 18:28:08,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 311 transitions, 4104 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-21 18:28:08,101 INFO L231 Difference]: Finished difference. Result has 150 places, 298 transitions, 3523 flow [2024-06-21 18:28:08,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3488, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3523, PETRI_PLACES=150, PETRI_TRANSITIONS=298} [2024-06-21 18:28:08,102 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2024-06-21 18:28:08,102 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 298 transitions, 3523 flow [2024-06-21 18:28:08,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 18:28:08,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:08,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 18:28:08,103 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 18:28:08,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1335313851, now seen corresponding path program 1 times [2024-06-21 18:28:08,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:08,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937379904] [2024-06-21 18:28:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:08,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:09,407 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 18:28:09,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:09,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937379904] [2024-06-21 18:28:09,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937379904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:09,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:09,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:09,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867364926] [2024-06-21 18:28:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:09,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:09,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:09,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:09,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:28:09,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 298 transitions, 3523 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:09,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:09,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:28:09,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:12,458 INFO L124 PetriNetUnfolderBase]: 12249/17106 cut-off events. [2024-06-21 18:28:12,458 INFO L125 PetriNetUnfolderBase]: For 361556/361565 co-relation queries the response was YES. [2024-06-21 18:28:12,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96948 conditions, 17106 events. 12249/17106 cut-off events. For 361556/361565 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 96728 event pairs, 5961 based on Foata normal form. 13/17106 useless extension candidates. Maximal degree in co-relation 96876. Up to 16001 conditions per place. [2024-06-21 18:28:12,618 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 280 selfloop transitions, 115 changer transitions 0/402 dead transitions. [2024-06-21 18:28:12,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 402 transitions, 5549 flow [2024-06-21 18:28:12,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:28:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:28:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 288 transitions. [2024-06-21 18:28:12,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433962264150943 [2024-06-21 18:28:12,621 INFO L175 Difference]: Start difference. First operand has 150 places, 298 transitions, 3523 flow. Second operand 10 states and 288 transitions. [2024-06-21 18:28:12,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 402 transitions, 5549 flow [2024-06-21 18:28:12,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 402 transitions, 5532 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:12,959 INFO L231 Difference]: Finished difference. Result has 160 places, 327 transitions, 4176 flow [2024-06-21 18:28:12,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4176, PETRI_PLACES=160, PETRI_TRANSITIONS=327} [2024-06-21 18:28:12,960 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 104 predicate places. [2024-06-21 18:28:12,960 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 327 transitions, 4176 flow [2024-06-21 18:28:12,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:12,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:12,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:12,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 18:28:12,961 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:28:12,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash 778823035, now seen corresponding path program 2 times [2024-06-21 18:28:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033443668] [2024-06-21 18:28:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:12,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:14,487 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 18:28:14,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:14,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033443668] [2024-06-21 18:28:14,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033443668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:14,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:14,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:14,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498443294] [2024-06-21 18:28:14,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:14,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:14,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:14,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:14,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:28:14,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 327 transitions, 4176 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:14,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:14,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:28:14,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:17,605 INFO L124 PetriNetUnfolderBase]: 12554/17541 cut-off events. [2024-06-21 18:28:17,605 INFO L125 PetriNetUnfolderBase]: For 422985/422994 co-relation queries the response was YES. [2024-06-21 18:28:17,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107122 conditions, 17541 events. 12554/17541 cut-off events. For 422985/422994 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 99199 event pairs, 5091 based on Foata normal form. 17/17550 useless extension candidates. Maximal degree in co-relation 107046. Up to 16488 conditions per place. [2024-06-21 18:28:17,791 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 292 selfloop transitions, 120 changer transitions 0/419 dead transitions. [2024-06-21 18:28:17,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 419 transitions, 6152 flow [2024-06-21 18:28:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-06-21 18:28:17,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5495283018867925 [2024-06-21 18:28:17,793 INFO L175 Difference]: Start difference. First operand has 160 places, 327 transitions, 4176 flow. Second operand 8 states and 233 transitions. [2024-06-21 18:28:17,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 419 transitions, 6152 flow [2024-06-21 18:28:18,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 419 transitions, 5795 flow, removed 170 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:18,484 INFO L231 Difference]: Finished difference. Result has 168 places, 365 transitions, 4756 flow [2024-06-21 18:28:18,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4003, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4756, PETRI_PLACES=168, PETRI_TRANSITIONS=365} [2024-06-21 18:28:18,485 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 112 predicate places. [2024-06-21 18:28:18,485 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 365 transitions, 4756 flow [2024-06-21 18:28:18,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:18,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:18,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:18,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 18:28:18,486 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:28:18,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:18,487 INFO L85 PathProgramCache]: Analyzing trace with hash 782542105, now seen corresponding path program 3 times [2024-06-21 18:28:18,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:18,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585604813] [2024-06-21 18:28:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:20,116 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 18:28:20,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:20,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585604813] [2024-06-21 18:28:20,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585604813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:20,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:20,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736938060] [2024-06-21 18:28:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:20,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:20,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:20,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:28:20,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 365 transitions, 4756 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:20,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:20,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:28:20,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:23,830 INFO L124 PetriNetUnfolderBase]: 12745/17809 cut-off events. [2024-06-21 18:28:23,830 INFO L125 PetriNetUnfolderBase]: For 464667/464674 co-relation queries the response was YES. [2024-06-21 18:28:23,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111165 conditions, 17809 events. 12745/17809 cut-off events. For 464667/464674 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 100982 event pairs, 5108 based on Foata normal form. 8/17801 useless extension candidates. Maximal degree in co-relation 111086. Up to 15578 conditions per place. [2024-06-21 18:28:24,003 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 215 selfloop transitions, 232 changer transitions 0/454 dead transitions. [2024-06-21 18:28:24,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 454 transitions, 6941 flow [2024-06-21 18:28:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-06-21 18:28:24,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5754716981132075 [2024-06-21 18:28:24,005 INFO L175 Difference]: Start difference. First operand has 168 places, 365 transitions, 4756 flow. Second operand 8 states and 244 transitions. [2024-06-21 18:28:24,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 454 transitions, 6941 flow [2024-06-21 18:28:24,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 454 transitions, 6852 flow, removed 40 selfloop flow, removed 1 redundant places. [2024-06-21 18:28:24,907 INFO L231 Difference]: Finished difference. Result has 177 places, 387 transitions, 5539 flow [2024-06-21 18:28:24,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4667, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5539, PETRI_PLACES=177, PETRI_TRANSITIONS=387} [2024-06-21 18:28:24,908 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 121 predicate places. [2024-06-21 18:28:24,908 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 387 transitions, 5539 flow [2024-06-21 18:28:24,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:24,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:24,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:24,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 18:28:24,909 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:28:24,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1224885449, now seen corresponding path program 4 times [2024-06-21 18:28:24,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:24,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973430628] [2024-06-21 18:28:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:24,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:26,511 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 18:28:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973430628] [2024-06-21 18:28:26,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973430628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:26,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:26,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:26,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493185428] [2024-06-21 18:28:26,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:26,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:26,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:26,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:26,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:26,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:28:26,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 387 transitions, 5539 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:26,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:26,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:28:26,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:30,370 INFO L124 PetriNetUnfolderBase]: 12757/17833 cut-off events. [2024-06-21 18:28:30,370 INFO L125 PetriNetUnfolderBase]: For 523988/523995 co-relation queries the response was YES. [2024-06-21 18:28:30,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118296 conditions, 17833 events. 12757/17833 cut-off events. For 523988/523995 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 101070 event pairs, 5100 based on Foata normal form. 8/17825 useless extension candidates. Maximal degree in co-relation 118213. Up to 15595 conditions per place. [2024-06-21 18:28:30,552 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 196 selfloop transitions, 253 changer transitions 0/456 dead transitions. [2024-06-21 18:28:30,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 456 transitions, 7421 flow [2024-06-21 18:28:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 241 transitions. [2024-06-21 18:28:30,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683962264150944 [2024-06-21 18:28:30,554 INFO L175 Difference]: Start difference. First operand has 177 places, 387 transitions, 5539 flow. Second operand 8 states and 241 transitions. [2024-06-21 18:28:30,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 456 transitions, 7421 flow [2024-06-21 18:28:31,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 456 transitions, 7167 flow, removed 78 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:31,339 INFO L231 Difference]: Finished difference. Result has 183 places, 392 transitions, 5918 flow [2024-06-21 18:28:31,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=5325, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5918, PETRI_PLACES=183, PETRI_TRANSITIONS=392} [2024-06-21 18:28:31,339 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 127 predicate places. [2024-06-21 18:28:31,339 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 392 transitions, 5918 flow [2024-06-21 18:28:31,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:31,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:31,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:31,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 18:28:31,340 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:28:31,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1441793103, now seen corresponding path program 5 times [2024-06-21 18:28:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210899495] [2024-06-21 18:28:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:33,230 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 18:28:33,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:33,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210899495] [2024-06-21 18:28:33,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210899495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:33,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:33,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045499031] [2024-06-21 18:28:33,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:33,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:33,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:33,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:33,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:33,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:28:33,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 392 transitions, 5918 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:33,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:33,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:28:33,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:37,229 INFO L124 PetriNetUnfolderBase]: 13115/18365 cut-off events. [2024-06-21 18:28:37,230 INFO L125 PetriNetUnfolderBase]: For 569229/569234 co-relation queries the response was YES. [2024-06-21 18:28:37,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124996 conditions, 18365 events. 13115/18365 cut-off events. For 569229/569234 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 104377 event pairs, 5110 based on Foata normal form. 13/18361 useless extension candidates. Maximal degree in co-relation 124911. Up to 17133 conditions per place. [2024-06-21 18:28:37,421 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 339 selfloop transitions, 155 changer transitions 0/501 dead transitions. [2024-06-21 18:28:37,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 501 transitions, 8417 flow [2024-06-21 18:28:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:28:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:28:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-21 18:28:37,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-21 18:28:37,423 INFO L175 Difference]: Start difference. First operand has 183 places, 392 transitions, 5918 flow. Second operand 9 states and 234 transitions. [2024-06-21 18:28:37,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 501 transitions, 8417 flow [2024-06-21 18:28:38,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 501 transitions, 7861 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-21 18:28:38,203 INFO L231 Difference]: Finished difference. Result has 188 places, 452 transitions, 6722 flow [2024-06-21 18:28:38,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=5455, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6722, PETRI_PLACES=188, PETRI_TRANSITIONS=452} [2024-06-21 18:28:38,204 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 132 predicate places. [2024-06-21 18:28:38,204 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 452 transitions, 6722 flow [2024-06-21 18:28:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:38,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:38,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 18:28:38,205 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:28:38,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1441937253, now seen corresponding path program 6 times [2024-06-21 18:28:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592469579] [2024-06-21 18:28:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:40,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:40,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592469579] [2024-06-21 18:28:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592469579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:40,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:40,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:40,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981070930] [2024-06-21 18:28:40,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:40,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:40,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:40,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:28:40,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 452 transitions, 6722 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:40,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:40,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:28:40,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:44,399 INFO L124 PetriNetUnfolderBase]: 13469/18893 cut-off events. [2024-06-21 18:28:44,399 INFO L125 PetriNetUnfolderBase]: For 628197/628204 co-relation queries the response was YES. [2024-06-21 18:28:44,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130901 conditions, 18893 events. 13469/18893 cut-off events. For 628197/628204 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 108152 event pairs, 5288 based on Foata normal form. 12/18863 useless extension candidates. Maximal degree in co-relation 130813. Up to 16255 conditions per place. [2024-06-21 18:28:44,609 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 238 selfloop transitions, 301 changer transitions 0/546 dead transitions. [2024-06-21 18:28:44,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 546 transitions, 9175 flow [2024-06-21 18:28:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-06-21 18:28:44,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5400943396226415 [2024-06-21 18:28:44,611 INFO L175 Difference]: Start difference. First operand has 188 places, 452 transitions, 6722 flow. Second operand 8 states and 229 transitions. [2024-06-21 18:28:44,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 546 transitions, 9175 flow [2024-06-21 18:28:45,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 546 transitions, 8951 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:45,492 INFO L231 Difference]: Finished difference. Result has 194 places, 484 transitions, 7553 flow [2024-06-21 18:28:45,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=6502, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7553, PETRI_PLACES=194, PETRI_TRANSITIONS=484} [2024-06-21 18:28:45,493 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 138 predicate places. [2024-06-21 18:28:45,493 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 484 transitions, 7553 flow [2024-06-21 18:28:45,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:45,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:45,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:45,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 18:28:45,494 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:28:45,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1876857237, now seen corresponding path program 7 times [2024-06-21 18:28:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:45,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104446149] [2024-06-21 18:28:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:45,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:47,624 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 18:28:47,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:47,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104446149] [2024-06-21 18:28:47,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104446149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:47,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:47,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:47,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011357169] [2024-06-21 18:28:47,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:47,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:47,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:47,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:28:47,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 484 transitions, 7553 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:47,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:47,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:28:47,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:52,028 INFO L124 PetriNetUnfolderBase]: 13495/18942 cut-off events. [2024-06-21 18:28:52,029 INFO L125 PetriNetUnfolderBase]: For 685831/685838 co-relation queries the response was YES. [2024-06-21 18:28:52,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135247 conditions, 18942 events. 13495/18942 cut-off events. For 685831/685838 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 108562 event pairs, 5266 based on Foata normal form. 12/18912 useless extension candidates. Maximal degree in co-relation 135156. Up to 16291 conditions per place. [2024-06-21 18:28:52,260 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 222 selfloop transitions, 326 changer transitions 0/555 dead transitions. [2024-06-21 18:28:52,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 555 transitions, 9695 flow [2024-06-21 18:28:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2024-06-21 18:28:52,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5330188679245284 [2024-06-21 18:28:52,262 INFO L175 Difference]: Start difference. First operand has 194 places, 484 transitions, 7553 flow. Second operand 8 states and 226 transitions. [2024-06-21 18:28:52,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 555 transitions, 9695 flow [2024-06-21 18:28:53,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 555 transitions, 9312 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:53,339 INFO L231 Difference]: Finished difference. Result has 200 places, 494 transitions, 8022 flow [2024-06-21 18:28:53,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7206, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8022, PETRI_PLACES=200, PETRI_TRANSITIONS=494} [2024-06-21 18:28:53,339 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 144 predicate places. [2024-06-21 18:28:53,339 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 494 transitions, 8022 flow [2024-06-21 18:28:53,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:53,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:53,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:53,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 18:28:53,340 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:28:53,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2103482795, now seen corresponding path program 8 times [2024-06-21 18:28:53,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:53,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156164288] [2024-06-21 18:28:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:53,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat