./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix005.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/mix005.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix005.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix005.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-7724a2d-m [2024-06-27 23:11:33,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:11:33,576 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:11:33,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:11:33,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:11:33,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:11:33,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:11:33,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:11:33,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:11:33,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:11:33,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:11:33,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:11:33,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:11:33,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:11:33,620 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:11:33,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:11:33,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:11:33,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:11:33,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:11:33,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:11:33,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:11:33,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:11:33,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:11:33,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:11:33,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:11:33,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:11:33,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:11:33,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:11:33,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:11:33,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:11:33,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:11:33,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:11:33,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:11:33,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:11:33,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:11:33,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:11:33,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:11:33,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:11:33,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:11:33,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:11:33,628 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:11:33,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:11:33,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:11:33,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:11:33,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:11:33,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:11:33,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:11:33,911 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:11:33,912 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:11:33,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix005.opt.i [2024-06-27 23:11:35,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:11:35,378 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:11:35,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix005.opt.i [2024-06-27 23:11:35,393 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ebac53c/17c4318aafde4c0c8f81ddee6c5af8f4/FLAG065337787 [2024-06-27 23:11:35,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ebac53c/17c4318aafde4c0c8f81ddee6c5af8f4 [2024-06-27 23:11:35,418 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:11:35,419 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:11:35,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix005.opt.yml/witness.yml [2024-06-27 23:11:35,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:11:35,523 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:11:35,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:11:35,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:11:35,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:11:35,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:11:35" (1/2) ... [2024-06-27 23:11:35,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74107d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:11:35, skipping insertion in model container [2024-06-27 23:11:35,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:11:35" (1/2) ... [2024-06-27 23:11:35,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d62eba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:11:35, skipping insertion in model container [2024-06-27 23:11:35,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:11:35" (2/2) ... [2024-06-27 23:11:35,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74107d91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:35, skipping insertion in model container [2024-06-27 23:11:35,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:11:35" (2/2) ... [2024-06-27 23:11:35,537 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:11:35,572 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:11:35,574 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 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_p1_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) [2024-06-27 23:11:35,574 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 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_p1_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) [2024-06-27 23:11:35,574 INFO L97 edCorrectnessWitness]: Location invariant before [L877-L877] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 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_p1_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) [2024-06-27 23:11:35,574 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 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_p1_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) [2024-06-27 23:11:35,575 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:11:35,576 INFO L106 edCorrectnessWitness]: ghost_update [L870-L870] multithreaded = 1; [2024-06-27 23:11:35,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:11:35,986 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:11:36,027 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:11:36,237 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:11:36,297 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:11:36,297 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36 WrapperNode [2024-06-27 23:11:36,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:11:36,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:11:36,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:11:36,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:11:36,305 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 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,339 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 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,381 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 162 [2024-06-27 23:11:36,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:11:36,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:11:36,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:11:36,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:11:36,393 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,433 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]. [2024-06-27 23:11:36,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:11:36,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:11:36,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:11:36,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:11:36,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (1/1) ... [2024-06-27 23:11:36,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:11:36,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:11:36,529 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) [2024-06-27 23:11:36,555 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 [2024-06-27 23:11:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:11:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:11:36,578 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:11:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:11:36,578 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:11:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:11:36,578 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:11:36,579 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:11:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 23:11:36,579 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 23:11:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:11:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:11:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:11:36,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:11:36,582 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:11:36,753 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:11:36,755 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:11:37,249 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:11:37,250 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:11:37,538 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:11:37,538 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:11:37,539 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:11:37 BoogieIcfgContainer [2024-06-27 23:11:37,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:11:37,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:11:37,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:11:37,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:11:37,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:11:35" (1/4) ... [2024-06-27 23:11:37,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623c2c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:11:37, skipping insertion in model container [2024-06-27 23:11:37,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:11:35" (2/4) ... [2024-06-27 23:11:37,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623c2c2f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:11:37, skipping insertion in model container [2024-06-27 23:11:37,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:11:36" (3/4) ... [2024-06-27 23:11:37,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623c2c2f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:11:37, skipping insertion in model container [2024-06-27 23:11:37,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:11:37" (4/4) ... [2024-06-27 23:11:37,552 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2024-06-27 23:11:37,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:11:37,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 23:11:37,570 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:11:37,647 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:11:37,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 23:11:37,731 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-27 23:11:37,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:11:37,734 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. [2024-06-27 23:11:37,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 23:11:37,738 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-27 23:11:37,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:11:37,763 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;@58be93b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:11:37,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 23:11:37,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:11:37,769 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:11:37,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:11:37,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:37,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:11:37,770 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)] === [2024-06-27 23:11:37,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:37,781 INFO L85 PathProgramCache]: Analyzing trace with hash 422091523, now seen corresponding path program 1 times [2024-06-27 23:11:37,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:37,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120155381] [2024-06-27 23:11:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:39,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:39,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120155381] [2024-06-27 23:11:39,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120155381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:39,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:39,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:11:39,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031679116] [2024-06-27 23:11:39,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:39,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:11:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:11:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:11:39,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-06-27 23:11:39,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:39,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:39,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-06-27 23:11:39,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:40,685 INFO L124 PetriNetUnfolderBase]: 4056/5717 cut-off events. [2024-06-27 23:11:40,685 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-06-27 23:11:40,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11494 conditions, 5717 events. 4056/5717 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 32827 event pairs, 2968 based on Foata normal form. 1/5611 useless extension candidates. Maximal degree in co-relation 11481. Up to 5606 conditions per place. [2024-06-27 23:11:40,735 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 40 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 23:11:40,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 225 flow [2024-06-27 23:11:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:11:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:11:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-06-27 23:11:40,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 23:11:40,749 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 106 transitions. [2024-06-27 23:11:40,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 225 flow [2024-06-27 23:11:40,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:11:40,759 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-27 23:11:40,761 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} [2024-06-27 23:11:40,764 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-27 23:11:40,764 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-27 23:11:40,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:40,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:40,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:40,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:11:40,766 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)] === [2024-06-27 23:11:40,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1904208308, now seen corresponding path program 1 times [2024-06-27 23:11:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:40,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445075359] [2024-06-27 23:11:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:40,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:42,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:42,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445075359] [2024-06-27 23:11:42,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445075359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:42,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:42,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:11:42,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893382105] [2024-06-27 23:11:42,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:42,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:11:42,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:11:42,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:11:42,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-06-27 23:11:42,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:42,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:42,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-06-27 23:11:42,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:43,141 INFO L124 PetriNetUnfolderBase]: 4046/5749 cut-off events. [2024-06-27 23:11:43,142 INFO L125 PetriNetUnfolderBase]: For 1383/1407 co-relation queries the response was YES. [2024-06-27 23:11:43,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13396 conditions, 5749 events. 4046/5749 cut-off events. For 1383/1407 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 33284 event pairs, 2434 based on Foata normal form. 6/5746 useless extension candidates. Maximal degree in co-relation 13384. Up to 5571 conditions per place. [2024-06-27 23:11:43,186 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 50 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-27 23:11:43,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 317 flow [2024-06-27 23:11:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:11:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:11:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-06-27 23:11:43,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6556603773584906 [2024-06-27 23:11:43,189 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 139 transitions. [2024-06-27 23:11:43,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 317 flow [2024-06-27 23:11:43,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:11:43,191 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-27 23:11:43,192 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} [2024-06-27 23:11:43,192 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-27 23:11:43,193 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-27 23:11:43,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:43,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:43,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:43,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:11:43,194 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)] === [2024-06-27 23:11:43,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:43,194 INFO L85 PathProgramCache]: Analyzing trace with hash 343462371, now seen corresponding path program 1 times [2024-06-27 23:11:43,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:43,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726976022] [2024-06-27 23:11:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:43,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:45,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:45,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726976022] [2024-06-27 23:11:45,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726976022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:45,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:45,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:11:45,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687076354] [2024-06-27 23:11:45,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:45,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:11:45,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:11:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:11:45,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-27 23:11:45,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) [2024-06-27 23:11:45,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:45,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-27 23:11:45,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:46,735 INFO L124 PetriNetUnfolderBase]: 7193/10067 cut-off events. [2024-06-27 23:11:46,735 INFO L125 PetriNetUnfolderBase]: For 6190/6222 co-relation queries the response was YES. [2024-06-27 23:11:46,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25944 conditions, 10067 events. 7193/10067 cut-off events. For 6190/6222 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 56607 event pairs, 2527 based on Foata normal form. 36/10064 useless extension candidates. Maximal degree in co-relation 25930. Up to 9522 conditions per place. [2024-06-27 23:11:46,803 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 74 selfloop transitions, 18 changer transitions 0/102 dead transitions. [2024-06-27 23:11:46,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 102 transitions, 517 flow [2024-06-27 23:11:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:11:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:11:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-06-27 23:11:46,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-06-27 23:11:46,807 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 198 transitions. [2024-06-27 23:11:46,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 102 transitions, 517 flow [2024-06-27 23:11:46,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 488 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 23:11:46,811 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 260 flow [2024-06-27 23:11:46,811 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=260, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-27 23:11:46,813 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-27 23:11:46,813 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 260 flow [2024-06-27 23:11:46,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) [2024-06-27 23:11:46,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:46,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:46,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:11:46,814 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)] === [2024-06-27 23:11:46,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash 928012663, now seen corresponding path program 1 times [2024-06-27 23:11:46,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:46,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974870874] [2024-06-27 23:11:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:46,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:49,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:49,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974870874] [2024-06-27 23:11:49,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974870874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:49,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:49,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:11:49,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102971428] [2024-06-27 23:11:49,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:49,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:11:49,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:49,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:11:49,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:11:49,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:11:49,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 260 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) [2024-06-27 23:11:49,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:49,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:11:49,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:51,711 INFO L124 PetriNetUnfolderBase]: 9145/12678 cut-off events. [2024-06-27 23:11:51,711 INFO L125 PetriNetUnfolderBase]: For 15593/15593 co-relation queries the response was YES. [2024-06-27 23:11:51,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36362 conditions, 12678 events. 9145/12678 cut-off events. For 15593/15593 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 70560 event pairs, 5760 based on Foata normal form. 6/12658 useless extension candidates. Maximal degree in co-relation 36344. Up to 12372 conditions per place. [2024-06-27 23:11:51,819 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 76 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2024-06-27 23:11:51,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 103 transitions, 611 flow [2024-06-27 23:11:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:11:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:11:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 23:11:51,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46462264150943394 [2024-06-27 23:11:51,823 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 260 flow. Second operand 8 states and 197 transitions. [2024-06-27 23:11:51,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 103 transitions, 611 flow [2024-06-27 23:11:51,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 103 transitions, 570 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:11:51,833 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 373 flow [2024-06-27 23:11:51,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=373, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2024-06-27 23:11:51,835 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-27 23:11:51,835 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 373 flow [2024-06-27 23:11:51,835 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) [2024-06-27 23:11:51,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:51,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:51,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:11:51,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:11:51,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:51,837 INFO L85 PathProgramCache]: Analyzing trace with hash -533952997, now seen corresponding path program 1 times [2024-06-27 23:11:51,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433665768] [2024-06-27 23:11:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:53,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433665768] [2024-06-27 23:11:53,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433665768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:53,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:53,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:11:53,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628961626] [2024-06-27 23:11:53,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:53,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:11:53,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:53,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:11:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:11:53,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:11:53,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 373 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-06-27 23:11:53,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:53,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:11:53,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:55,677 INFO L124 PetriNetUnfolderBase]: 9988/14160 cut-off events. [2024-06-27 23:11:55,677 INFO L125 PetriNetUnfolderBase]: For 25459/25525 co-relation queries the response was YES. [2024-06-27 23:11:55,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43477 conditions, 14160 events. 9988/14160 cut-off events. For 25459/25525 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 83754 event pairs, 6786 based on Foata normal form. 19/13920 useless extension candidates. Maximal degree in co-relation 43454. Up to 13680 conditions per place. [2024-06-27 23:11:55,803 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 61 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2024-06-27 23:11:55,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 581 flow [2024-06-27 23:11:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:11:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:11:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-27 23:11:55,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2024-06-27 23:11:55,807 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 373 flow. Second operand 5 states and 133 transitions. [2024-06-27 23:11:55,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 581 flow [2024-06-27 23:11:55,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 89 transitions, 535 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 23:11:55,829 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 399 flow [2024-06-27 23:11:55,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2024-06-27 23:11:55,837 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-27 23:11:55,837 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 399 flow [2024-06-27 23:11:55,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-06-27 23:11:55,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:55,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:55,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:11:55,838 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)] === [2024-06-27 23:11:55,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:55,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1657710184, now seen corresponding path program 1 times [2024-06-27 23:11:55,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:55,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63221939] [2024-06-27 23:11:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:55,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:57,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:57,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63221939] [2024-06-27 23:11:57,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63221939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:57,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:57,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:11:57,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608289361] [2024-06-27 23:11:57,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:57,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:11:57,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:57,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:11:57,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:11:57,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:11:57,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 399 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-27 23:11:57,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:57,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:11:57,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:59,717 INFO L124 PetriNetUnfolderBase]: 10283/14612 cut-off events. [2024-06-27 23:11:59,717 INFO L125 PetriNetUnfolderBase]: For 36835/36951 co-relation queries the response was YES. [2024-06-27 23:11:59,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49005 conditions, 14612 events. 10283/14612 cut-off events. For 36835/36951 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 85773 event pairs, 4611 based on Foata normal form. 65/14454 useless extension candidates. Maximal degree in co-relation 48980. Up to 13418 conditions per place. [2024-06-27 23:11:59,820 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 87 selfloop transitions, 42 changer transitions 0/141 dead transitions. [2024-06-27 23:11:59,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 141 transitions, 905 flow [2024-06-27 23:11:59,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:11:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:11:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-06-27 23:11:59,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535377358490566 [2024-06-27 23:11:59,823 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 399 flow. Second operand 8 states and 227 transitions. [2024-06-27 23:11:59,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 141 transitions, 905 flow [2024-06-27 23:11:59,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 141 transitions, 875 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 23:11:59,840 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 636 flow [2024-06-27 23:11:59,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2024-06-27 23:11:59,841 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-06-27 23:11:59,841 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 636 flow [2024-06-27 23:11:59,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-27 23:11:59,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:59,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:59,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:11:59,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:11:59,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash 600516055, now seen corresponding path program 1 times [2024-06-27 23:11:59,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:59,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745021493] [2024-06-27 23:11:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:59,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:01,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:01,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745021493] [2024-06-27 23:12:01,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745021493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:01,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:01,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:12:01,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669637963] [2024-06-27 23:12:01,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:01,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:12:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:01,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:12:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:12:01,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:12:01,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 636 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) [2024-06-27 23:12:01,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:01,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:12:01,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:03,826 INFO L124 PetriNetUnfolderBase]: 10608/14976 cut-off events. [2024-06-27 23:12:03,826 INFO L125 PetriNetUnfolderBase]: For 52887/53114 co-relation queries the response was YES. [2024-06-27 23:12:03,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54211 conditions, 14976 events. 10608/14976 cut-off events. For 52887/53114 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 88044 event pairs, 6925 based on Foata normal form. 60/14719 useless extension candidates. Maximal degree in co-relation 54181. Up to 14290 conditions per place. [2024-06-27 23:12:03,922 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 86 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-06-27 23:12:03,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 126 transitions, 978 flow [2024-06-27 23:12:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:12:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:12:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 23:12:03,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-27 23:12:03,924 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 636 flow. Second operand 7 states and 181 transitions. [2024-06-27 23:12:03,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 126 transitions, 978 flow [2024-06-27 23:12:03,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 126 transitions, 919 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:12:03,962 INFO L231 Difference]: Finished difference. Result has 86 places, 105 transitions, 713 flow [2024-06-27 23:12:03,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=713, PETRI_PLACES=86, PETRI_TRANSITIONS=105} [2024-06-27 23:12:03,963 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-27 23:12:03,964 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 105 transitions, 713 flow [2024-06-27 23:12:03,964 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) [2024-06-27 23:12:03,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:03,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:03,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:12:03,964 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)] === [2024-06-27 23:12:03,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2065231294, now seen corresponding path program 2 times [2024-06-27 23:12:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:03,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739643532] [2024-06-27 23:12:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:03,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:05,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:05,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739643532] [2024-06-27 23:12:05,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739643532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:05,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:05,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:12:05,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290005994] [2024-06-27 23:12:05,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:05,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:12:05,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:05,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:12:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:12:06,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:12:06,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 105 transitions, 713 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-27 23:12:06,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:06,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:12:06,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:08,186 INFO L124 PetriNetUnfolderBase]: 10648/15202 cut-off events. [2024-06-27 23:12:08,187 INFO L125 PetriNetUnfolderBase]: For 75400/75626 co-relation queries the response was YES. [2024-06-27 23:12:08,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60582 conditions, 15202 events. 10648/15202 cut-off events. For 75400/75626 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 89579 event pairs, 4564 based on Foata normal form. 86/15088 useless extension candidates. Maximal degree in co-relation 60549. Up to 13751 conditions per place. [2024-06-27 23:12:08,324 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 93 selfloop transitions, 63 changer transitions 0/170 dead transitions. [2024-06-27 23:12:08,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 170 transitions, 1388 flow [2024-06-27 23:12:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:12:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:12:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 23:12:08,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-27 23:12:08,328 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 713 flow. Second operand 8 states and 216 transitions. [2024-06-27 23:12:08,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 170 transitions, 1388 flow [2024-06-27 23:12:08,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 170 transitions, 1328 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 23:12:08,393 INFO L231 Difference]: Finished difference. Result has 92 places, 133 transitions, 1091 flow [2024-06-27 23:12:08,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1091, PETRI_PLACES=92, PETRI_TRANSITIONS=133} [2024-06-27 23:12:08,394 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-27 23:12:08,394 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 133 transitions, 1091 flow [2024-06-27 23:12:08,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-27 23:12:08,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:08,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:08,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:12:08,395 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)] === [2024-06-27 23:12:08,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:08,395 INFO L85 PathProgramCache]: Analyzing trace with hash -398889126, now seen corresponding path program 3 times [2024-06-27 23:12:08,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:08,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385907356] [2024-06-27 23:12:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:08,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:09,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:09,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385907356] [2024-06-27 23:12:09,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385907356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:09,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:09,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:12:09,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418115402] [2024-06-27 23:12:09,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:09,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:12:09,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:09,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:12:09,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:12:10,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:12:10,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 133 transitions, 1091 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-27 23:12:10,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:10,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:12:10,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:12,322 INFO L124 PetriNetUnfolderBase]: 11307/16163 cut-off events. [2024-06-27 23:12:12,322 INFO L125 PetriNetUnfolderBase]: For 106149/106368 co-relation queries the response was YES. [2024-06-27 23:12:12,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69591 conditions, 16163 events. 11307/16163 cut-off events. For 106149/106368 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 96824 event pairs, 4492 based on Foata normal form. 70/15932 useless extension candidates. Maximal degree in co-relation 69555. Up to 14049 conditions per place. [2024-06-27 23:12:12,467 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 115 selfloop transitions, 66 changer transitions 0/195 dead transitions. [2024-06-27 23:12:12,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 195 transitions, 1810 flow [2024-06-27 23:12:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:12:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:12:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2024-06-27 23:12:12,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-06-27 23:12:12,469 INFO L175 Difference]: Start difference. First operand has 92 places, 133 transitions, 1091 flow. Second operand 8 states and 232 transitions. [2024-06-27 23:12:12,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 195 transitions, 1810 flow [2024-06-27 23:12:12,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 195 transitions, 1736 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 23:12:12,544 INFO L231 Difference]: Finished difference. Result has 99 places, 142 transitions, 1315 flow [2024-06-27 23:12:12,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1315, PETRI_PLACES=99, PETRI_TRANSITIONS=142} [2024-06-27 23:12:12,545 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-27 23:12:12,545 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 142 transitions, 1315 flow [2024-06-27 23:12:12,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-27 23:12:12,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:12,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:12,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:12:12,546 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)] === [2024-06-27 23:12:12,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:12,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1117206560, now seen corresponding path program 4 times [2024-06-27 23:12:12,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:12,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653112346] [2024-06-27 23:12:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:12,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:13,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:13,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653112346] [2024-06-27 23:12:13,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653112346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:13,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:13,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:12:13,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162914836] [2024-06-27 23:12:13,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:13,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:12:13,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:13,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:12:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:12:13,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-06-27 23:12:13,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 142 transitions, 1315 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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) [2024-06-27 23:12:13,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:13,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-06-27 23:12:13,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:15,687 INFO L124 PetriNetUnfolderBase]: 8569/13627 cut-off events. [2024-06-27 23:12:15,688 INFO L125 PetriNetUnfolderBase]: For 113920/114660 co-relation queries the response was YES. [2024-06-27 23:12:15,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61862 conditions, 13627 events. 8569/13627 cut-off events. For 113920/114660 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 94140 event pairs, 2353 based on Foata normal form. 149/13137 useless extension candidates. Maximal degree in co-relation 61823. Up to 9597 conditions per place. [2024-06-27 23:12:15,812 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 84 selfloop transitions, 77 changer transitions 0/198 dead transitions. [2024-06-27 23:12:15,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 198 transitions, 2049 flow [2024-06-27 23:12:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:12:15,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:12:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-27 23:12:15,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5956873315363881 [2024-06-27 23:12:15,816 INFO L175 Difference]: Start difference. First operand has 99 places, 142 transitions, 1315 flow. Second operand 7 states and 221 transitions. [2024-06-27 23:12:15,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 198 transitions, 2049 flow [2024-06-27 23:12:15,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 198 transitions, 1972 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 23:12:15,922 INFO L231 Difference]: Finished difference. Result has 104 places, 155 transitions, 1661 flow [2024-06-27 23:12:15,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1661, PETRI_PLACES=104, PETRI_TRANSITIONS=155} [2024-06-27 23:12:15,923 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-06-27 23:12:15,923 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 155 transitions, 1661 flow [2024-06-27 23:12:15,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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) [2024-06-27 23:12:15,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:15,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:15,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:12:15,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:12:15,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1318674760, now seen corresponding path program 1 times [2024-06-27 23:12:15,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:15,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666100835] [2024-06-27 23:12:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:17,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:17,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666100835] [2024-06-27 23:12:17,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666100835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:17,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:17,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:12:17,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874734790] [2024-06-27 23:12:17,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:17,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:12:17,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:12:17,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:12:17,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:12:17,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 155 transitions, 1661 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) [2024-06-27 23:12:17,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:17,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:12:17,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:19,589 INFO L124 PetriNetUnfolderBase]: 12147/17452 cut-off events. [2024-06-27 23:12:19,589 INFO L125 PetriNetUnfolderBase]: For 142273/142555 co-relation queries the response was YES. [2024-06-27 23:12:19,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80215 conditions, 17452 events. 12147/17452 cut-off events. For 142273/142555 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 104485 event pairs, 5229 based on Foata normal form. 100/17397 useless extension candidates. Maximal degree in co-relation 80172. Up to 16280 conditions per place. [2024-06-27 23:12:19,730 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 147 selfloop transitions, 53 changer transitions 0/226 dead transitions. [2024-06-27 23:12:19,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 226 transitions, 2682 flow [2024-06-27 23:12:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:12:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:12:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 23:12:19,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522911051212938 [2024-06-27 23:12:19,732 INFO L175 Difference]: Start difference. First operand has 104 places, 155 transitions, 1661 flow. Second operand 7 states and 194 transitions. [2024-06-27 23:12:19,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 226 transitions, 2682 flow [2024-06-27 23:12:19,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 226 transitions, 2612 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:12:19,870 INFO L231 Difference]: Finished difference. Result has 109 places, 192 transitions, 2245 flow [2024-06-27 23:12:19,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2245, PETRI_PLACES=109, PETRI_TRANSITIONS=192} [2024-06-27 23:12:19,871 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 53 predicate places. [2024-06-27 23:12:19,871 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 192 transitions, 2245 flow [2024-06-27 23:12:19,872 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) [2024-06-27 23:12:19,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:19,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:19,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:12:19,872 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)] === [2024-06-27 23:12:19,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1632230916, now seen corresponding path program 5 times [2024-06-27 23:12:19,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:19,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314109307] [2024-06-27 23:12:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:21,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314109307] [2024-06-27 23:12:21,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314109307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:21,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:21,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:12:21,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989645313] [2024-06-27 23:12:21,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:21,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:12:21,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:21,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:12:21,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:12:21,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:12:21,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 192 transitions, 2245 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-27 23:12:21,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:21,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:12:21,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:24,998 INFO L124 PetriNetUnfolderBase]: 13089/18942 cut-off events. [2024-06-27 23:12:24,998 INFO L125 PetriNetUnfolderBase]: For 168437/168704 co-relation queries the response was YES. [2024-06-27 23:12:25,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93262 conditions, 18942 events. 13089/18942 cut-off events. For 168437/168704 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 116604 event pairs, 4850 based on Foata normal form. 77/18815 useless extension candidates. Maximal degree in co-relation 93217. Up to 15373 conditions per place. [2024-06-27 23:12:25,153 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 134 selfloop transitions, 104 changer transitions 0/258 dead transitions. [2024-06-27 23:12:25,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 258 transitions, 3316 flow [2024-06-27 23:12:25,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:12:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:12:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-27 23:12:25,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212264150943396 [2024-06-27 23:12:25,156 INFO L175 Difference]: Start difference. First operand has 109 places, 192 transitions, 2245 flow. Second operand 8 states and 221 transitions. [2024-06-27 23:12:25,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 258 transitions, 3316 flow [2024-06-27 23:12:25,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 258 transitions, 3275 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 23:12:25,359 INFO L231 Difference]: Finished difference. Result has 116 places, 212 transitions, 2848 flow [2024-06-27 23:12:25,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2848, PETRI_PLACES=116, PETRI_TRANSITIONS=212} [2024-06-27 23:12:25,360 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-27 23:12:25,361 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 212 transitions, 2848 flow [2024-06-27 23:12:25,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-27 23:12:25,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:25,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:12:25,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:12:25,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:25,362 INFO L85 PathProgramCache]: Analyzing trace with hash -649665872, now seen corresponding path program 2 times [2024-06-27 23:12:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:25,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813272044] [2024-06-27 23:12:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:25,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:26,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:26,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813272044] [2024-06-27 23:12:26,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813272044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:26,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:26,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:12:26,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726996825] [2024-06-27 23:12:26,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:26,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:12:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:12:26,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:12:26,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:12:26,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 212 transitions, 2848 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) [2024-06-27 23:12:26,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:26,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:12:26,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:29,449 INFO L124 PetriNetUnfolderBase]: 13079/18924 cut-off events. [2024-06-27 23:12:29,450 INFO L125 PetriNetUnfolderBase]: For 188056/188529 co-relation queries the response was YES. [2024-06-27 23:12:29,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95353 conditions, 18924 events. 13079/18924 cut-off events. For 188056/188529 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 115930 event pairs, 5553 based on Foata normal form. 170/18864 useless extension candidates. Maximal degree in co-relation 95305. Up to 17569 conditions per place. [2024-06-27 23:12:29,643 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 160 selfloop transitions, 63 changer transitions 0/251 dead transitions. [2024-06-27 23:12:29,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 251 transitions, 3584 flow [2024-06-27 23:12:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:12:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:12:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-27 23:12:29,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220125786163522 [2024-06-27 23:12:29,645 INFO L175 Difference]: Start difference. First operand has 116 places, 212 transitions, 2848 flow. Second operand 6 states and 166 transitions. [2024-06-27 23:12:29,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 251 transitions, 3584 flow [2024-06-27 23:12:29,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 251 transitions, 3462 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 23:12:29,847 INFO L231 Difference]: Finished difference. Result has 119 places, 228 transitions, 3075 flow [2024-06-27 23:12:29,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2729, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3075, PETRI_PLACES=119, PETRI_TRANSITIONS=228} [2024-06-27 23:12:29,848 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-27 23:12:29,848 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 228 transitions, 3075 flow [2024-06-27 23:12:29,849 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) [2024-06-27 23:12:29,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:29,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:29,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:12:29,849 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)] === [2024-06-27 23:12:29,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash -937083224, now seen corresponding path program 1 times [2024-06-27 23:12:29,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:29,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076193249] [2024-06-27 23:12:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:29,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:31,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:31,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076193249] [2024-06-27 23:12:31,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076193249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:31,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:31,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:12:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893879371] [2024-06-27 23:12:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:31,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:12:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:31,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:12:31,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:12:31,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:12:31,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 228 transitions, 3075 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:12:31,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:31,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:12:31,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:34,953 INFO L124 PetriNetUnfolderBase]: 14206/20354 cut-off events. [2024-06-27 23:12:34,953 INFO L125 PetriNetUnfolderBase]: For 213616/213652 co-relation queries the response was YES. [2024-06-27 23:12:35,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106313 conditions, 20354 events. 14206/20354 cut-off events. For 213616/213652 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 122555 event pairs, 5362 based on Foata normal form. 18/20276 useless extension candidates. Maximal degree in co-relation 106261. Up to 18769 conditions per place. [2024-06-27 23:12:35,176 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 181 selfloop transitions, 106 changer transitions 0/302 dead transitions. [2024-06-27 23:12:35,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 302 transitions, 4331 flow [2024-06-27 23:12:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:12:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:12:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 23:12:35,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863731656184486 [2024-06-27 23:12:35,178 INFO L175 Difference]: Start difference. First operand has 119 places, 228 transitions, 3075 flow. Second operand 9 states and 232 transitions. [2024-06-27 23:12:35,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 302 transitions, 4331 flow [2024-06-27 23:12:35,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 302 transitions, 4256 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 23:12:35,535 INFO L231 Difference]: Finished difference. Result has 128 places, 249 transitions, 3641 flow [2024-06-27 23:12:35,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3641, PETRI_PLACES=128, PETRI_TRANSITIONS=249} [2024-06-27 23:12:35,535 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-27 23:12:35,535 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 249 transitions, 3641 flow [2024-06-27 23:12:35,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:12:35,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:35,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:35,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:12:35,536 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)] === [2024-06-27 23:12:35,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1122144372, now seen corresponding path program 2 times [2024-06-27 23:12:35,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:35,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236044888] [2024-06-27 23:12:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:35,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:37,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:37,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236044888] [2024-06-27 23:12:37,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236044888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:37,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:37,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:12:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616992925] [2024-06-27 23:12:37,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:37,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:12:37,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:12:37,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:12:37,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:12:37,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 249 transitions, 3641 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:12:37,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:37,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:12:37,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:41,666 INFO L124 PetriNetUnfolderBase]: 14167/20309 cut-off events. [2024-06-27 23:12:41,666 INFO L125 PetriNetUnfolderBase]: For 238462/238498 co-relation queries the response was YES. [2024-06-27 23:12:41,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108655 conditions, 20309 events. 14167/20309 cut-off events. For 238462/238498 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 122480 event pairs, 5394 based on Foata normal form. 18/20231 useless extension candidates. Maximal degree in co-relation 108599. Up to 18716 conditions per place. [2024-06-27 23:12:41,843 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 182 selfloop transitions, 113 changer transitions 0/310 dead transitions. [2024-06-27 23:12:41,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 310 transitions, 4742 flow [2024-06-27 23:12:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:12:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:12:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 23:12:41,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863731656184486 [2024-06-27 23:12:41,845 INFO L175 Difference]: Start difference. First operand has 128 places, 249 transitions, 3641 flow. Second operand 9 states and 232 transitions. [2024-06-27 23:12:41,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 310 transitions, 4742 flow [2024-06-27 23:12:42,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 310 transitions, 4491 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 23:12:42,228 INFO L231 Difference]: Finished difference. Result has 134 places, 263 transitions, 3949 flow [2024-06-27 23:12:42,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3397, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3949, PETRI_PLACES=134, PETRI_TRANSITIONS=263} [2024-06-27 23:12:42,229 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-27 23:12:42,229 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 263 transitions, 3949 flow [2024-06-27 23:12:42,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:12:42,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:42,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:42,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:12:42,230 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)] === [2024-06-27 23:12:42,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:42,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1009179290, now seen corresponding path program 3 times [2024-06-27 23:12:42,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:42,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403522074] [2024-06-27 23:12:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:42,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:44,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:44,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403522074] [2024-06-27 23:12:44,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403522074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:44,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:44,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:12:44,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215727625] [2024-06-27 23:12:44,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:44,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:12:44,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:44,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:12:44,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:12:44,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:12:44,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 263 transitions, 3949 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:12:44,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:44,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:12:44,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:48,249 INFO L124 PetriNetUnfolderBase]: 14558/20951 cut-off events. [2024-06-27 23:12:48,249 INFO L125 PetriNetUnfolderBase]: For 265388/265424 co-relation queries the response was YES. [2024-06-27 23:12:48,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114217 conditions, 20951 events. 14558/20951 cut-off events. For 265388/265424 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 127607 event pairs, 4891 based on Foata normal form. 14/20869 useless extension candidates. Maximal degree in co-relation 114159. Up to 18401 conditions per place. [2024-06-27 23:12:48,503 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 175 selfloop transitions, 140 changer transitions 0/330 dead transitions. [2024-06-27 23:12:48,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 330 transitions, 5143 flow [2024-06-27 23:12:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:12:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:12:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 23:12:48,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947589098532495 [2024-06-27 23:12:48,511 INFO L175 Difference]: Start difference. First operand has 134 places, 263 transitions, 3949 flow. Second operand 9 states and 236 transitions. [2024-06-27 23:12:48,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 330 transitions, 5143 flow [2024-06-27 23:12:48,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 330 transitions, 4869 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-27 23:12:48,868 INFO L231 Difference]: Finished difference. Result has 140 places, 278 transitions, 4340 flow [2024-06-27 23:12:48,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4340, PETRI_PLACES=140, PETRI_TRANSITIONS=278} [2024-06-27 23:12:48,868 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-27 23:12:48,868 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 278 transitions, 4340 flow [2024-06-27 23:12:48,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:12:48,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:48,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:48,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:12:48,869 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:12:48,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:48,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2027682054, now seen corresponding path program 3 times [2024-06-27 23:12:48,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:48,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360058951] [2024-06-27 23:12:48,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:48,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:50,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:50,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360058951] [2024-06-27 23:12:50,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360058951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:50,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:50,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:12:50,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439275816] [2024-06-27 23:12:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:50,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:12:50,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:50,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:12:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:12:50,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:12:50,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 278 transitions, 4340 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) [2024-06-27 23:12:50,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:50,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:12:50,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:53,529 INFO L124 PetriNetUnfolderBase]: 13573/19721 cut-off events. [2024-06-27 23:12:53,530 INFO L125 PetriNetUnfolderBase]: For 271401/272007 co-relation queries the response was YES. [2024-06-27 23:12:53,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107290 conditions, 19721 events. 13573/19721 cut-off events. For 271401/272007 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 122065 event pairs, 5657 based on Foata normal form. 136/19595 useless extension candidates. Maximal degree in co-relation 107230. Up to 18278 conditions per place. [2024-06-27 23:12:53,685 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 183 selfloop transitions, 77 changer transitions 0/297 dead transitions. [2024-06-27 23:12:53,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 297 transitions, 4946 flow [2024-06-27 23:12:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:12:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:12:53,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 23:12:53,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:12:53,688 INFO L175 Difference]: Start difference. First operand has 140 places, 278 transitions, 4340 flow. Second operand 6 states and 159 transitions. [2024-06-27 23:12:53,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 297 transitions, 4946 flow [2024-06-27 23:12:54,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 297 transitions, 4575 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-27 23:12:54,080 INFO L231 Difference]: Finished difference. Result has 140 places, 280 transitions, 4164 flow [2024-06-27 23:12:54,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3973, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4164, PETRI_PLACES=140, PETRI_TRANSITIONS=280} [2024-06-27 23:12:54,080 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-27 23:12:54,081 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 280 transitions, 4164 flow [2024-06-27 23:12:54,081 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) [2024-06-27 23:12:54,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:54,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:54,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:12:54,081 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)] === [2024-06-27 23:12:54,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash 141277494, now seen corresponding path program 1 times [2024-06-27 23:12:54,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:54,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177843888] [2024-06-27 23:12:54,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:55,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:55,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177843888] [2024-06-27 23:12:55,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177843888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:55,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:55,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:12:55,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344641343] [2024-06-27 23:12:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:12:55,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:12:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:12:55,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:12:55,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 280 transitions, 4164 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 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) [2024-06-27 23:12:55,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:55,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:12:55,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:59,932 INFO L124 PetriNetUnfolderBase]: 15037/21670 cut-off events. [2024-06-27 23:12:59,932 INFO L125 PetriNetUnfolderBase]: For 318512/318566 co-relation queries the response was YES. [2024-06-27 23:13:00,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121325 conditions, 21670 events. 15037/21670 cut-off events. For 318512/318566 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 133465 event pairs, 5462 based on Foata normal form. 50/21602 useless extension candidates. Maximal degree in co-relation 121263. Up to 19078 conditions per place. [2024-06-27 23:13:00,160 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 222 selfloop transitions, 126 changer transitions 0/363 dead transitions. [2024-06-27 23:13:00,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 363 transitions, 5532 flow [2024-06-27 23:13:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:13:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:13:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-27 23:13:00,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220125786163522 [2024-06-27 23:13:00,162 INFO L175 Difference]: Start difference. First operand has 140 places, 280 transitions, 4164 flow. Second operand 9 states and 249 transitions. [2024-06-27 23:13:00,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 363 transitions, 5532 flow [2024-06-27 23:13:00,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 363 transitions, 5449 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 23:13:00,681 INFO L231 Difference]: Finished difference. Result has 148 places, 303 transitions, 4796 flow [2024-06-27 23:13:00,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4081, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4796, PETRI_PLACES=148, PETRI_TRANSITIONS=303} [2024-06-27 23:13:00,681 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 92 predicate places. [2024-06-27 23:13:00,681 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 303 transitions, 4796 flow [2024-06-27 23:13:00,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 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) [2024-06-27 23:13:00,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:00,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:13:00,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:13:00,682 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:13:00,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:00,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1548099604, now seen corresponding path program 1 times [2024-06-27 23:13:00,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:00,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024249928] [2024-06-27 23:13:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:00,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:02,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:02,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024249928] [2024-06-27 23:13:02,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024249928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:02,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:02,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:13:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678071290] [2024-06-27 23:13:02,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:13:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:13:02,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:13:02,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:13:02,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 303 transitions, 4796 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-27 23:13:02,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:02,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:13:02,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:06,183 INFO L124 PetriNetUnfolderBase]: 14163/20703 cut-off events. [2024-06-27 23:13:06,183 INFO L125 PetriNetUnfolderBase]: For 326135/326620 co-relation queries the response was YES. [2024-06-27 23:13:06,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115203 conditions, 20703 events. 14163/20703 cut-off events. For 326135/326620 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 130513 event pairs, 5560 based on Foata normal form. 178/20669 useless extension candidates. Maximal degree in co-relation 115138. Up to 18898 conditions per place. [2024-06-27 23:13:06,381 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 230 selfloop transitions, 98 changer transitions 0/367 dead transitions. [2024-06-27 23:13:06,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 367 transitions, 5940 flow [2024-06-27 23:13:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:13:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:13:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-06-27 23:13:06,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056603773584906 [2024-06-27 23:13:06,385 INFO L175 Difference]: Start difference. First operand has 148 places, 303 transitions, 4796 flow. Second operand 10 states and 268 transitions. [2024-06-27 23:13:06,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 367 transitions, 5940 flow [2024-06-27 23:13:07,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 367 transitions, 5728 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 23:13:07,083 INFO L231 Difference]: Finished difference. Result has 157 places, 326 transitions, 5097 flow [2024-06-27 23:13:07,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4584, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5097, PETRI_PLACES=157, PETRI_TRANSITIONS=326} [2024-06-27 23:13:07,083 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 101 predicate places. [2024-06-27 23:13:07,083 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 326 transitions, 5097 flow [2024-06-27 23:13:07,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-27 23:13:07,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:07,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:13:07,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:13:07,084 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:13:07,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash 350915722, now seen corresponding path program 2 times [2024-06-27 23:13:07,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:07,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103238114] [2024-06-27 23:13:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:07,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:09,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:09,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103238114] [2024-06-27 23:13:09,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103238114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:09,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:09,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:13:09,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370692936] [2024-06-27 23:13:09,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:09,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:13:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:13:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56