./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-bad-commit-2.wvr-bad.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/weaver/popl20-bad-commit-2.wvr-bad.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-bad-commit-2.wvr-bad.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:15:36,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:15:36,889 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:15:36,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:15:36,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:15:36,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:15:36,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:15:36,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:15:36,922 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:15:36,924 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:15:36,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:15:36,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:15:36,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:15:36,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:15:36,927 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:15:36,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:15:36,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:15:36,927 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:15:36,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:15:36,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:15:36,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:15:36,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:15:36,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:15:36,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:15:36,930 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:15:36,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:15:36,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:15:36,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:15:36,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:15:36,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:15:36,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:15:36,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:15:36,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:15:36,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:15:36,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:15:36,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:15:36,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:15:36,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:15:36,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:15:36,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:15:36,933 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:15:36,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:15:36,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:15:36,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:15:37,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:15:37,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:15:37,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:15:37,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:15:37,164 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:15:37,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2024-02-07 19:15:38,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:15:38,368 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:15:38,372 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2024-02-07 19:15:38,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c98ea22/7c2e94a06c7342baab30e7bbc0e39668/FLAG445e30b11 [2024-02-07 19:15:38,396 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c98ea22/7c2e94a06c7342baab30e7bbc0e39668 [2024-02-07 19:15:38,398 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:15:38,399 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:15:38,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-bad-commit-2.wvr-bad.yml/witness.yml [2024-02-07 19:15:38,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:15:38,512 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:15:38,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:15:38,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:15:38,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:15:38,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:15:38" (1/2) ... [2024-02-07 19:15:38,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671cdd7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:15:38, skipping insertion in model container [2024-02-07 19:15:38,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:15:38" (1/2) ... [2024-02-07 19:15:38,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68466165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:15:38, skipping insertion in model container [2024-02-07 19:15:38,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:15:38" (2/2) ... [2024-02-07 19:15:38,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671cdd7d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38, skipping insertion in model container [2024-02-07 19:15:38,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:15:38" (2/2) ... [2024-02-07 19:15:38,521 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:15:38,574 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:15:38,576 INFO L76 edCorrectnessWitness]: Location invariant before [L86-L86] -2147483647 <= manager_front [2024-02-07 19:15:38,576 INFO L76 edCorrectnessWitness]: Location invariant before [L55-L55] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 19:15:38,576 INFO L76 edCorrectnessWitness]: Location invariant before [L88-L88] (((0 <= manager_state) && (manager_state <= 5)) && (manager_state <= 127)) && (((((manager_state == 0 || manager_state == 1) || manager_state == 2) || manager_state == 3) || manager_state == 4) || manager_state == 5) [2024-02-07 19:15:38,576 INFO L76 edCorrectnessWitness]: Location invariant before [L67-L67] (((0 <= manager_state) && (manager_state <= 5)) && (manager_state <= 127)) && (((((manager_state == 0 || manager_state == 1) || manager_state == 2) || manager_state == 3) || manager_state == 4) || manager_state == 5) [2024-02-07 19:15:38,576 INFO L76 edCorrectnessWitness]: Location invariant before [L66-L66] manager_state == 2 [2024-02-07 19:15:38,577 INFO L76 edCorrectnessWitness]: Location invariant before [L83-L83] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 19:15:38,577 INFO L76 edCorrectnessWitness]: Location invariant before [L130-L130] -2147483647 <= node2_front [2024-02-07 19:15:38,577 INFO L76 edCorrectnessWitness]: Location invariant before [L160-L160] client_state == 0 [2024-02-07 19:15:38,577 INFO L76 edCorrectnessWitness]: Location invariant before [L90-L90] 0 <= client_back [2024-02-07 19:15:38,577 INFO L76 edCorrectnessWitness]: Location invariant before [L205-L205] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:15:38,577 INFO L76 edCorrectnessWitness]: Location invariant before [L129-L129] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:15:38,578 INFO L76 edCorrectnessWitness]: Location invariant before [L60-L60] (((0 <= manager_state) && (manager_state <= 5)) && (manager_state <= 127)) && (((((manager_state == 0 || manager_state == 1) || manager_state == 2) || manager_state == 3) || manager_state == 4) || manager_state == 5) [2024-02-07 19:15:38,578 INFO L76 edCorrectnessWitness]: Location invariant before [L79-L79] -2147483647 <= manager_front [2024-02-07 19:15:38,578 INFO L76 edCorrectnessWitness]: Location invariant before [L156-L156] (-2147483647 <= client_back) && (client_front <= 2147483646) [2024-02-07 19:15:38,578 INFO L76 edCorrectnessWitness]: Location invariant before [L152-L152] -2147483647 <= manager_back [2024-02-07 19:15:38,578 INFO L76 edCorrectnessWitness]: Location invariant before [L158-L158] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:15:38,578 INFO L76 edCorrectnessWitness]: Location invariant before [L81-L81] (((0 <= manager_state) && (manager_state <= 5)) && (manager_state <= 127)) && (((((manager_state == 0 || manager_state == 1) || manager_state == 2) || manager_state == 3) || manager_state == 4) || manager_state == 5) [2024-02-07 19:15:38,578 INFO L76 edCorrectnessWitness]: Location invariant before [L62-L62] 0 <= node1_back [2024-02-07 19:15:38,578 INFO L76 edCorrectnessWitness]: Location invariant before [L85-L85] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:15:38,578 INFO L76 edCorrectnessWitness]: Location invariant before [L134-L134] 0 <= manager_back [2024-02-07 19:15:38,579 INFO L76 edCorrectnessWitness]: Location invariant before [L138-L138] node2_state == 0 [2024-02-07 19:15:38,579 INFO L76 edCorrectnessWitness]: Location invariant before [L116-L116] node1_state == 0 [2024-02-07 19:15:38,579 INFO L76 edCorrectnessWitness]: Location invariant before [L115-L115] -2147483647 <= manager_back [2024-02-07 19:15:38,579 INFO L76 edCorrectnessWitness]: Location invariant before [L132-L132] ((0 <= node2_state) && (node2_state <= 1)) && (node2_state == 0 || node2_state == 1) [2024-02-07 19:15:38,579 INFO L76 edCorrectnessWitness]: Location invariant before [L147-L147] ((0 <= client_state) && (client_state <= 1)) && (client_state == 0 || client_state == 1) [2024-02-07 19:15:38,580 INFO L76 edCorrectnessWitness]: Location invariant before [L125-L125] ((0 <= node2_state) && (node2_state <= 1)) && (node2_state == 0 || node2_state == 1) [2024-02-07 19:15:38,580 INFO L76 edCorrectnessWitness]: Location invariant before [L72-L72] -2147483647 <= node2_back [2024-02-07 19:15:38,580 INFO L76 edCorrectnessWitness]: Location invariant before [L137-L137] -2147483647 <= manager_back [2024-02-07 19:15:38,580 INFO L76 edCorrectnessWitness]: Location invariant before [L78-L78] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:15:38,580 INFO L76 edCorrectnessWitness]: Location invariant before [L159-L159] -2147483647 <= client_front [2024-02-07 19:15:38,580 INFO L76 edCorrectnessWitness]: Location invariant before [L74-L74] (((0 <= manager_state) && (manager_state <= 5)) && (manager_state <= 127)) && (((((manager_state == 0 || manager_state == 1) || manager_state == 2) || manager_state == 3) || manager_state == 4) || manager_state == 5) [2024-02-07 19:15:38,580 INFO L76 edCorrectnessWitness]: Location invariant before [L93-L93] -2147483647 <= client_back [2024-02-07 19:15:38,580 INFO L76 edCorrectnessWitness]: Location invariant before [L109-L109] node1_state == 1 [2024-02-07 19:15:38,580 INFO L76 edCorrectnessWitness]: Location invariant before [L87-L87] manager_state == 5 [2024-02-07 19:15:38,581 INFO L76 edCorrectnessWitness]: Location invariant before [L127-L127] (-2147483647 <= node2_back) && (node2_front <= 2147483646) [2024-02-07 19:15:38,581 INFO L76 edCorrectnessWitness]: Location invariant before [L149-L149] 0 <= manager_back [2024-02-07 19:15:38,581 INFO L76 edCorrectnessWitness]: Location invariant before [L217-L217] ((((((((8 <= i && i <= 2147483646) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:15:38,581 INFO L76 edCorrectnessWitness]: Location invariant before [L80-L80] manager_state == 4 [2024-02-07 19:15:38,581 INFO L76 edCorrectnessWitness]: Location invariant before [L153-L153] client_state == 1 [2024-02-07 19:15:38,581 INFO L76 edCorrectnessWitness]: Location invariant before [L112-L112] 0 <= manager_back [2024-02-07 19:15:38,581 INFO L76 edCorrectnessWitness]: Location invariant before [L65-L65] -2147483647 <= node1_back [2024-02-07 19:15:38,582 INFO L76 edCorrectnessWitness]: Location invariant before [L76-L76] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 19:15:38,582 INFO L76 edCorrectnessWitness]: Location invariant before [L57-L57] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:15:38,582 INFO L76 edCorrectnessWitness]: Location invariant before [L105-L105] (-2147483647 <= node1_back) && (node1_front <= 2147483646) [2024-02-07 19:15:38,582 INFO L76 edCorrectnessWitness]: Location invariant before [L110-L110] ((0 <= node1_state) && (node1_state <= 1)) && (node1_state == 0 || node1_state == 1) [2024-02-07 19:15:38,582 INFO L76 edCorrectnessWitness]: Location invariant before [L94-L94] manager_state == 0 [2024-02-07 19:15:38,582 INFO L76 edCorrectnessWitness]: Location invariant before [L108-L108] -2147483647 <= node1_front [2024-02-07 19:15:38,583 INFO L76 edCorrectnessWitness]: Location invariant before [L58-L58] -2147483647 <= manager_front [2024-02-07 19:15:38,583 INFO L76 edCorrectnessWitness]: Location invariant before [L69-L69] 0 <= node2_back [2024-02-07 19:15:38,583 INFO L76 edCorrectnessWitness]: Location invariant before [L53-L53] (((0 <= manager_state) && (manager_state <= 5)) && (manager_state <= 127)) && (((((manager_state == 0 || manager_state == 1) || manager_state == 2) || manager_state == 3) || manager_state == 4) || manager_state == 5) [2024-02-07 19:15:38,583 INFO L76 edCorrectnessWitness]: Location invariant before [L131-L131] node2_state == 1 [2024-02-07 19:15:38,583 INFO L76 edCorrectnessWitness]: Location invariant before [L107-L107] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 19:15:38,583 INFO L76 edCorrectnessWitness]: Location invariant before [L172-L172] safe == (_Bool)1 [2024-02-07 19:15:38,584 INFO L76 edCorrectnessWitness]: Location invariant before [L103-L103] ((0 <= node1_state) && (node1_state <= 1)) && (node1_state == 0 || node1_state == 1) [2024-02-07 19:15:38,584 INFO L76 edCorrectnessWitness]: Location invariant before [L59-L59] manager_state == 1 [2024-02-07 19:15:38,584 INFO L76 edCorrectnessWitness]: Location invariant before [L73-L73] manager_state == 3 [2024-02-07 19:15:38,584 INFO L76 edCorrectnessWitness]: Location invariant before [L154-L154] ((0 <= client_state) && (client_state <= 1)) && (client_state == 0 || client_state == 1) [2024-02-07 19:15:38,610 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:15:38,807 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-02-07 19:15:38,820 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:15:38,826 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:15:38,897 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] Start Parsing Local [2024-02-07 19:15:38,906 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:15:38,918 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:15:38,918 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38 WrapperNode [2024-02-07 19:15:38,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:15:38,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:15:38,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:15:38,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:15:38,924 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 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:38,933 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 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:38,963 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 541 [2024-02-07 19:15:38,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:15:38,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:15:38,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:15:38,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:15:38,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:38,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:38,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:38,996 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 16]. 62 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 4]. [2024-02-07 19:15:38,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:38,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:39,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:39,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:39,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:39,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:39,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:15:39,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:15:39,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:15:39,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:15:39,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (1/1) ... [2024-02-07 19:15:39,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:15:39,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:15:39,051 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) [2024-02-07 19:15:39,076 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 [2024-02-07 19:15:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:15:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:15:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:15:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:15:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:15:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:15:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:15:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 19:15:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:15:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:15:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:15:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:15:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:15:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 19:15:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 19:15:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 19:15:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 19:15:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 19:15:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 19:15:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 19:15:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-07 19:15:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-07 19:15:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:15:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:15:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:15:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:15:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:15:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 19:15:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:15:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:15:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 19:15:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:15:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:15:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:15:39,100 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:15:39,230 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:15:39,231 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:15:39,851 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:15:39,851 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:15:40,225 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:15:40,234 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-07 19:15:40,235 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:15:40 BoogieIcfgContainer [2024-02-07 19:15:40,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:15:40,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:15:40,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:15:40,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:15:40,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:15:38" (1/4) ... [2024-02-07 19:15:40,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c17459a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:15:40, skipping insertion in model container [2024-02-07 19:15:40,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:15:38" (2/4) ... [2024-02-07 19:15:40,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c17459a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:15:40, skipping insertion in model container [2024-02-07 19:15:40,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:15:38" (3/4) ... [2024-02-07 19:15:40,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c17459a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:15:40, skipping insertion in model container [2024-02-07 19:15:40,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:15:40" (4/4) ... [2024-02-07 19:15:40,244 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-02-07 19:15:40,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:15:40,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2024-02-07 19:15:40,260 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:15:40,344 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 19:15:40,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 165 transitions, 358 flow [2024-02-07 19:15:40,448 INFO L124 PetriNetUnfolderBase]: 24/161 cut-off events. [2024-02-07 19:15:40,449 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 19:15:40,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 161 events. 24/161 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 627 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 135. Up to 8 conditions per place. [2024-02-07 19:15:40,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 165 transitions, 358 flow [2024-02-07 19:15:40,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 160 transitions, 344 flow [2024-02-07 19:15:40,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:15:40,482 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;@59b6d9c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:15:40,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 119 error locations. [2024-02-07 19:15:40,485 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:15:40,485 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 19:15:40,485 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:15:40,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:15:40,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 19:15:40,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 116 more)] === [2024-02-07 19:15:40,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:15:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash 51973, now seen corresponding path program 1 times [2024-02-07 19:15:40,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:15:40,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170558927] [2024-02-07 19:15:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:15:40,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:15:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:15:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:15:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:15:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170558927] [2024-02-07 19:15:40,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170558927] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:15:40,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:15:40,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:15:40,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167421918] [2024-02-07 19:15:40,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:15:40,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:15:40,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:15:40,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:15:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:15:40,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2024-02-07 19:15:40,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 160 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-02-07 19:15:40,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:15:40,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2024-02-07 19:15:40,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:15:46,447 INFO L124 PetriNetUnfolderBase]: 49371/76112 cut-off events. [2024-02-07 19:15:46,447 INFO L125 PetriNetUnfolderBase]: For 1156/1156 co-relation queries the response was YES. [2024-02-07 19:15:46,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138253 conditions, 76112 events. 49371/76112 cut-off events. For 1156/1156 co-relation queries the response was YES. Maximal size of possible extension queue 4148. Compared 672878 event pairs, 15813 based on Foata normal form. 6361/49751 useless extension candidates. Maximal degree in co-relation 128846. Up to 34160 conditions per place. [2024-02-07 19:15:47,163 INFO L140 encePairwiseOnDemand]: 121/165 looper letters, 105 selfloop transitions, 7 changer transitions 1/175 dead transitions. [2024-02-07 19:15:47,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 175 transitions, 621 flow [2024-02-07 19:15:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:15:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:15:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2024-02-07 19:15:47,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7717171717171717 [2024-02-07 19:15:47,177 INFO L175 Difference]: Start difference. First operand has 149 places, 160 transitions, 344 flow. Second operand 3 states and 382 transitions. [2024-02-07 19:15:47,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 175 transitions, 621 flow [2024-02-07 19:15:47,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 175 transitions, 591 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-07 19:15:47,332 INFO L231 Difference]: Finished difference. Result has 113 places, 131 transitions, 307 flow [2024-02-07 19:15:47,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=113, PETRI_TRANSITIONS=131} [2024-02-07 19:15:47,336 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -36 predicate places. [2024-02-07 19:15:47,336 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 131 transitions, 307 flow [2024-02-07 19:15:47,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-02-07 19:15:47,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:15:47,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 19:15:47,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:15:47,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 116 more)] === [2024-02-07 19:15:47,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:15:47,338 INFO L85 PathProgramCache]: Analyzing trace with hash 49998936, now seen corresponding path program 1 times [2024-02-07 19:15:47,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:15:47,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865024829] [2024-02-07 19:15:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:15:47,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:15:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:15:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:15:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:15:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865024829] [2024-02-07 19:15:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865024829] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:15:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:15:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:15:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852261931] [2024-02-07 19:15:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:15:47,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:15:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:15:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:15:47,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:15:47,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 165 [2024-02-07 19:15:47,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 131 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-02-07 19:15:47,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:15:47,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 165 [2024-02-07 19:15:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:15:51,309 INFO L124 PetriNetUnfolderBase]: 49217/66430 cut-off events. [2024-02-07 19:15:51,309 INFO L125 PetriNetUnfolderBase]: For 8565/8565 co-relation queries the response was YES. [2024-02-07 19:15:51,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139852 conditions, 66430 events. 49217/66430 cut-off events. For 8565/8565 co-relation queries the response was YES. Maximal size of possible extension queue 4710. Compared 499498 event pairs, 32143 based on Foata normal form. 0/43646 useless extension candidates. Maximal degree in co-relation 67791. Up to 59900 conditions per place. [2024-02-07 19:15:51,790 INFO L140 encePairwiseOnDemand]: 152/165 looper letters, 71 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2024-02-07 19:15:51,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 139 transitions, 483 flow [2024-02-07 19:15:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:15:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:15:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-02-07 19:15:51,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-02-07 19:15:51,794 INFO L175 Difference]: Start difference. First operand has 113 places, 131 transitions, 307 flow. Second operand 3 states and 270 transitions. [2024-02-07 19:15:51,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 139 transitions, 483 flow [2024-02-07 19:15:51,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 139 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:15:51,803 INFO L231 Difference]: Finished difference. Result has 116 places, 139 transitions, 376 flow [2024-02-07 19:15:51,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=116, PETRI_TRANSITIONS=139} [2024-02-07 19:15:51,804 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -33 predicate places. [2024-02-07 19:15:51,804 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 139 transitions, 376 flow [2024-02-07 19:15:51,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-02-07 19:15:51,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:15:51,804 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-07 19:15:51,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:15:51,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 116 more)] === [2024-02-07 19:15:51,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:15:51,805 INFO L85 PathProgramCache]: Analyzing trace with hash 804390123, now seen corresponding path program 1 times [2024-02-07 19:15:51,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:15:51,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713574225] [2024-02-07 19:15:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:15:51,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:15:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:15:51,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:15:51,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:15:51,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713574225] [2024-02-07 19:15:51,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713574225] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:15:51,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188212142] [2024-02-07 19:15:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:15:51,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:15:51,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:15:51,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:15:51,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:15:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:15:51,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 19:15:51,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:15:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:15:52,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:15:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:15:52,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188212142] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:15:52,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:15:52,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 19:15:52,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773047450] [2024-02-07 19:15:52,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:15:52,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:15:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:15:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:15:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:15:52,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 165 [2024-02-07 19:15:52,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 139 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2024-02-07 19:15:52,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:15:52,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 165 [2024-02-07 19:15:52,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:15:56,426 INFO L124 PetriNetUnfolderBase]: 49221/66442 cut-off events. [2024-02-07 19:15:56,427 INFO L125 PetriNetUnfolderBase]: For 8586/8586 co-relation queries the response was YES. [2024-02-07 19:15:56,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135698 conditions, 66442 events. 49221/66442 cut-off events. For 8586/8586 co-relation queries the response was YES. Maximal size of possible extension queue 4710. Compared 499335 event pairs, 32143 based on Foata normal form. 0/43658 useless extension candidates. Maximal degree in co-relation 135579. Up to 59901 conditions per place. [2024-02-07 19:15:57,065 INFO L140 encePairwiseOnDemand]: 152/165 looper letters, 71 selfloop transitions, 17 changer transitions 0/147 dead transitions. [2024-02-07 19:15:57,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 147 transitions, 590 flow [2024-02-07 19:15:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:15:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:15:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2024-02-07 19:15:57,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-02-07 19:15:57,067 INFO L175 Difference]: Start difference. First operand has 116 places, 139 transitions, 376 flow. Second operand 4 states and 342 transitions. [2024-02-07 19:15:57,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 147 transitions, 590 flow [2024-02-07 19:15:57,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 147 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:15:57,074 INFO L231 Difference]: Finished difference. Result has 118 places, 147 transitions, 454 flow [2024-02-07 19:15:57,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=454, PETRI_PLACES=118, PETRI_TRANSITIONS=147} [2024-02-07 19:15:57,074 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -31 predicate places. [2024-02-07 19:15:57,075 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 147 transitions, 454 flow [2024-02-07 19:15:57,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2024-02-07 19:15:57,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:15:57,075 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1] [2024-02-07 19:15:57,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 19:15:57,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:15:57,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 116 more)] === [2024-02-07 19:15:57,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:15:57,287 INFO L85 PathProgramCache]: Analyzing trace with hash -75152194, now seen corresponding path program 2 times [2024-02-07 19:15:57,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:15:57,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269085322] [2024-02-07 19:15:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:15:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:15:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:15:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:15:57,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:15:57,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269085322] [2024-02-07 19:15:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269085322] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:15:57,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384671200] [2024-02-07 19:15:57,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:15:57,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:15:57,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:15:57,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:15:57,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 19:15:57,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 19:15:57,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:15:57,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 19:15:57,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:15:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:15:57,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:15:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:15:57,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384671200] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:15:57,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:15:57,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-02-07 19:15:57,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140414475] [2024-02-07 19:15:57,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:15:57,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:15:57,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:15:57,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:15:57,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:15:57,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 165 [2024-02-07 19:15:57,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 147 transitions, 454 flow. Second operand has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2024-02-07 19:15:57,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:15:57,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 165 [2024-02-07 19:15:57,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:16:01,738 INFO L124 PetriNetUnfolderBase]: 49225/66454 cut-off events. [2024-02-07 19:16:01,739 INFO L125 PetriNetUnfolderBase]: For 8626/8626 co-relation queries the response was YES. [2024-02-07 19:16:01,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135757 conditions, 66454 events. 49225/66454 cut-off events. For 8626/8626 co-relation queries the response was YES. Maximal size of possible extension queue 4710. Compared 499801 event pairs, 32143 based on Foata normal form. 0/43670 useless extension candidates. Maximal degree in co-relation 135603. Up to 59902 conditions per place. [2024-02-07 19:16:02,214 INFO L140 encePairwiseOnDemand]: 152/165 looper letters, 71 selfloop transitions, 25 changer transitions 0/155 dead transitions. [2024-02-07 19:16:02,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 155 transitions, 694 flow [2024-02-07 19:16:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:16:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:16:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2024-02-07 19:16:02,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018181818181818 [2024-02-07 19:16:02,215 INFO L175 Difference]: Start difference. First operand has 118 places, 147 transitions, 454 flow. Second operand 5 states and 414 transitions. [2024-02-07 19:16:02,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 155 transitions, 694 flow [2024-02-07 19:16:02,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 155 transitions, 669 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-02-07 19:16:02,222 INFO L231 Difference]: Finished difference. Result has 122 places, 155 transitions, 557 flow [2024-02-07 19:16:02,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=557, PETRI_PLACES=122, PETRI_TRANSITIONS=155} [2024-02-07 19:16:02,223 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -27 predicate places. [2024-02-07 19:16:02,223 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 155 transitions, 557 flow [2024-02-07 19:16:02,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2024-02-07 19:16:02,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:16:02,223 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1] [2024-02-07 19:16:02,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 19:16:02,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-07 19:16:02,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 116 more)] === [2024-02-07 19:16:02,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:16:02,437 INFO L85 PathProgramCache]: Analyzing trace with hash 793238481, now seen corresponding path program 3 times [2024-02-07 19:16:02,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:16:02,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538569119] [2024-02-07 19:16:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:16:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:16:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:16:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:16:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538569119] [2024-02-07 19:16:02,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538569119] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:16:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474865106] [2024-02-07 19:16:02,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 19:16:02,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:16:02,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:16:02,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:16:02,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 19:16:02,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-07 19:16:02,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:16:02,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-07 19:16:02,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:16:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-07 19:16:02,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:16:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-07 19:16:02,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474865106] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:16:02,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:16:02,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-02-07 19:16:02,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668664627] [2024-02-07 19:16:02,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:16:02,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-07 19:16:02,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:16:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-07 19:16:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-07 19:16:02,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 165 [2024-02-07 19:16:02,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 155 transitions, 557 flow. Second operand has 10 states, 10 states have (on average 61.8) internal successors, (618), 10 states have internal predecessors, (618), 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) [2024-02-07 19:16:02,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:16:02,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 165 [2024-02-07 19:16:02,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:16:07,658 INFO L124 PetriNetUnfolderBase]: 49233/66470 cut-off events. [2024-02-07 19:16:07,658 INFO L125 PetriNetUnfolderBase]: For 8634/8634 co-relation queries the response was YES. [2024-02-07 19:16:07,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135852 conditions, 66470 events. 49233/66470 cut-off events. For 8634/8634 co-relation queries the response was YES. Maximal size of possible extension queue 4710. Compared 499751 event pairs, 32143 based on Foata normal form. 0/43690 useless extension candidates. Maximal degree in co-relation 135656. Up to 59892 conditions per place. [2024-02-07 19:16:08,176 INFO L140 encePairwiseOnDemand]: 148/165 looper letters, 82 selfloop transitions, 46 changer transitions 0/183 dead transitions. [2024-02-07 19:16:08,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 183 transitions, 911 flow [2024-02-07 19:16:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 19:16:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 19:16:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 610 transitions. [2024-02-07 19:16:08,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-02-07 19:16:08,178 INFO L175 Difference]: Start difference. First operand has 122 places, 155 transitions, 557 flow. Second operand 8 states and 610 transitions. [2024-02-07 19:16:08,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 183 transitions, 911 flow [2024-02-07 19:16:08,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 183 transitions, 839 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-02-07 19:16:08,183 INFO L231 Difference]: Finished difference. Result has 123 places, 167 transitions, 663 flow [2024-02-07 19:16:08,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=663, PETRI_PLACES=123, PETRI_TRANSITIONS=167} [2024-02-07 19:16:08,184 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -26 predicate places. [2024-02-07 19:16:08,184 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 167 transitions, 663 flow [2024-02-07 19:16:08,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.8) internal successors, (618), 10 states have internal predecessors, (618), 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) [2024-02-07 19:16:08,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:16:08,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:16:08,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 19:16:08,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:16:08,395 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 116 more)] === [2024-02-07 19:16:08,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:16:08,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1721325242, now seen corresponding path program 1 times [2024-02-07 19:16:08,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:16:08,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890775915] [2024-02-07 19:16:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:16:08,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:16:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:16:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:16:08,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:16:08,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890775915] [2024-02-07 19:16:08,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890775915] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:16:08,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:16:08,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:16:08,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921867909] [2024-02-07 19:16:08,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:16:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:16:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:16:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:16:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:16:08,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 165 [2024-02-07 19:16:08,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 167 transitions, 663 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2024-02-07 19:16:08,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:16:08,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 165 [2024-02-07 19:16:08,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand