./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 958ec4d9 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-dev-958ec4d-m [2024-02-07 14:37:28,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:37:28,428 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:37:28,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:37:28,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:37:28,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:37:28,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:37:28,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:37:28,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:37:28,467 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:37:28,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:37:28,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:37:28,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:37:28,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:37:28,469 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:37:28,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:37:28,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:37:28,470 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:37:28,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:37:28,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:37:28,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:37:28,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:37:28,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:37:28,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:37:28,472 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:37:28,472 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:37:28,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:37:28,473 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:37:28,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:37:28,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:37:28,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:37:28,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:37:28,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:37:28,475 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:37:28,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:37:28,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:37:28,476 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:37:28,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:37:28,476 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:37:28,477 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:37:28,477 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:37:28,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:37:28,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:37:28,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:37:28,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:37:28,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:37:28,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:37:28,755 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:37:28,756 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:37:28,757 INFO L431 ainManager$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 14:37:28,946 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:37:28,947 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:37:28,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2024-02-07 14:37:30,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:37:30,252 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:37:30,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2024-02-07 14:37:30,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910209ffe/38fd9a2b9f884097b0bcfa80c38ef9a6/FLAGdb21aa9cc [2024-02-07 14:37:30,273 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910209ffe/38fd9a2b9f884097b0bcfa80c38ef9a6 [2024-02-07 14:37:30,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:37:30,275 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:37:30,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:37:30,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:37:30,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:37:30,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:37:28" (1/2) ... [2024-02-07 14:37:30,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecc74ab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:37:30, skipping insertion in model container [2024-02-07 14:37:30,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:37:28" (1/2) ... [2024-02-07 14:37:30,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@cb1b714 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:37:30, skipping insertion in model container [2024-02-07 14:37:30,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:37:30" (2/2) ... [2024-02-07 14:37:30,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecc74ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30, skipping insertion in model container [2024-02-07 14:37:30,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:37:30" (2/2) ... [2024-02-07 14:37:30,285 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:37:30,342 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:37:30,343 INFO L76 edCorrectnessWitness]: Location invariant before [L149-L149] 0 <= manager_back [2024-02-07 14:37:30,344 INFO L76 edCorrectnessWitness]: Location invariant before [L159-L159] -2147483647 <= client_front [2024-02-07 14:37:30,344 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 14:37:30,344 INFO L76 edCorrectnessWitness]: Location invariant before [L153-L153] client_state == 1 [2024-02-07 14:37:30,344 INFO L76 edCorrectnessWitness]: Location invariant before [L66-L66] manager_state == 2 [2024-02-07 14:37:30,344 INFO L76 edCorrectnessWitness]: Location invariant before [L72-L72] -2147483647 <= node2_back [2024-02-07 14:37:30,345 INFO L76 edCorrectnessWitness]: Location invariant before [L58-L58] -2147483647 <= manager_front [2024-02-07 14:37:30,345 INFO L76 edCorrectnessWitness]: Location invariant before [L87-L87] manager_state == 5 [2024-02-07 14:37:30,345 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 14:37:30,345 INFO L76 edCorrectnessWitness]: Location invariant before [L205-L205] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:37:30,345 INFO L76 edCorrectnessWitness]: Location invariant before [L76-L76] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 14:37:30,345 INFO L76 edCorrectnessWitness]: Location invariant before [L154-L154] ((0 <= client_state) && (client_state <= 1)) && (client_state == 0 || client_state == 1) [2024-02-07 14:37:30,346 INFO L76 edCorrectnessWitness]: Location invariant before [L94-L94] manager_state == 0 [2024-02-07 14:37:30,346 INFO L76 edCorrectnessWitness]: Location invariant before [L110-L110] ((0 <= node1_state) && (node1_state <= 1)) && (node1_state == 0 || node1_state == 1) [2024-02-07 14:37:30,346 INFO L76 edCorrectnessWitness]: Location invariant before [L83-L83] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 14:37:30,346 INFO L76 edCorrectnessWitness]: Location invariant before [L156-L156] (-2147483647 <= client_back) && (client_front <= 2147483646) [2024-02-07 14:37:30,346 INFO L76 edCorrectnessWitness]: Location invariant before [L137-L137] -2147483647 <= manager_back [2024-02-07 14:37:30,346 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 14:37:30,347 INFO L76 edCorrectnessWitness]: Location invariant before [L69-L69] 0 <= node2_back [2024-02-07 14:37:30,347 INFO L76 edCorrectnessWitness]: Location invariant before [L131-L131] node2_state == 1 [2024-02-07 14:37:30,347 INFO L76 edCorrectnessWitness]: Location invariant before [L152-L152] -2147483647 <= manager_back [2024-02-07 14:37:30,347 INFO L76 edCorrectnessWitness]: Location invariant before [L127-L127] (-2147483647 <= node2_back) && (node2_front <= 2147483646) [2024-02-07 14:37:30,347 INFO L76 edCorrectnessWitness]: Location invariant before [L129-L129] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:37:30,348 INFO L76 edCorrectnessWitness]: Location invariant before [L107-L107] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:37:30,348 INFO L76 edCorrectnessWitness]: Location invariant before [L115-L115] -2147483647 <= manager_back [2024-02-07 14:37:30,348 INFO L76 edCorrectnessWitness]: Location invariant before [L158-L158] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:37:30,348 INFO L76 edCorrectnessWitness]: Location invariant before [L116-L116] node1_state == 0 [2024-02-07 14:37:30,348 INFO L76 edCorrectnessWitness]: Location invariant before [L125-L125] ((0 <= node2_state) && (node2_state <= 1)) && (node2_state == 0 || node2_state == 1) [2024-02-07 14:37:30,348 INFO L76 edCorrectnessWitness]: Location invariant before [L90-L90] 0 <= client_back [2024-02-07 14:37:30,349 INFO L76 edCorrectnessWitness]: Location invariant before [L86-L86] -2147483647 <= manager_front [2024-02-07 14:37:30,349 INFO L76 edCorrectnessWitness]: Location invariant before [L55-L55] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 14:37:30,349 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 14:37:30,349 INFO L76 edCorrectnessWitness]: Location invariant before [L130-L130] -2147483647 <= node2_front [2024-02-07 14:37:30,349 INFO L76 edCorrectnessWitness]: Location invariant before [L93-L93] -2147483647 <= client_back [2024-02-07 14:37:30,349 INFO L76 edCorrectnessWitness]: Location invariant before [L109-L109] node1_state == 1 [2024-02-07 14:37:30,350 INFO L76 edCorrectnessWitness]: Location invariant before [L132-L132] ((0 <= node2_state) && (node2_state <= 1)) && (node2_state == 0 || node2_state == 1) [2024-02-07 14:37:30,350 INFO L76 edCorrectnessWitness]: Location invariant before [L65-L65] -2147483647 <= node1_back [2024-02-07 14:37:30,350 INFO L76 edCorrectnessWitness]: Location invariant before [L172-L172] safe == (_Bool)1 [2024-02-07 14:37:30,350 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 14:37:30,350 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 14:37:30,350 INFO L76 edCorrectnessWitness]: Location invariant before [L105-L105] (-2147483647 <= node1_back) && (node1_front <= 2147483646) [2024-02-07 14:37:30,351 INFO L76 edCorrectnessWitness]: Location invariant before [L78-L78] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:37:30,351 INFO L76 edCorrectnessWitness]: Location invariant before [L79-L79] -2147483647 <= manager_front [2024-02-07 14:37:30,351 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 14:37:30,351 INFO L76 edCorrectnessWitness]: Location invariant before [L138-L138] node2_state == 0 [2024-02-07 14:37:30,351 INFO L76 edCorrectnessWitness]: Location invariant before [L134-L134] 0 <= manager_back [2024-02-07 14:37:30,352 INFO L76 edCorrectnessWitness]: Location invariant before [L108-L108] -2147483647 <= node1_front [2024-02-07 14:37:30,352 INFO L76 edCorrectnessWitness]: Location invariant before [L112-L112] 0 <= manager_back [2024-02-07 14:37:30,352 INFO L76 edCorrectnessWitness]: Location invariant before [L85-L85] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:37:30,352 INFO L76 edCorrectnessWitness]: Location invariant before [L57-L57] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:37:30,352 INFO L76 edCorrectnessWitness]: Location invariant before [L160-L160] client_state == 0 [2024-02-07 14:37:30,352 INFO L76 edCorrectnessWitness]: Location invariant before [L59-L59] manager_state == 1 [2024-02-07 14:37:30,353 INFO L76 edCorrectnessWitness]: Location invariant before [L103-L103] ((0 <= node1_state) && (node1_state <= 1)) && (node1_state == 0 || node1_state == 1) [2024-02-07 14:37:30,353 INFO L76 edCorrectnessWitness]: Location invariant before [L62-L62] 0 <= node1_back [2024-02-07 14:37:30,353 INFO L76 edCorrectnessWitness]: Location invariant before [L80-L80] manager_state == 4 [2024-02-07 14:37:30,353 INFO L76 edCorrectnessWitness]: Location invariant before [L147-L147] ((0 <= client_state) && (client_state <= 1)) && (client_state == 0 || client_state == 1) [2024-02-07 14:37:30,353 INFO L76 edCorrectnessWitness]: Location invariant before [L73-L73] manager_state == 3 [2024-02-07 14:37:30,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:37:30,611 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 14:37:30,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:37:30,636 INFO L203 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 14:37:30,717 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 14:37:30,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:37:30,752 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:37:30,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30 WrapperNode [2024-02-07 14:37:30,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:37:30,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:37:30,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:37:30,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:37:30,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,838 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 541 [2024-02-07 14:37:30,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:37:30,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:37:30,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:37:30,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:37:30,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,909 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 2, 16, 2, 2, 2]. 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, 4, 1, 1, 1]. [2024-02-07 14:37:30,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:37:30,939 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:37:30,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:37:30,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:37:30,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (1/1) ... [2024-02-07 14:37:30,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:37:30,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:37:30,973 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 14:37:30,998 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 14:37:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:37:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:37:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:37:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:37:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:37:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:37:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:37:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:37:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:37:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:37:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:37:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:37:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:37:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:37:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:37:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:37:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:37:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:37:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 14:37:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 14:37:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-07 14:37:31,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-07 14:37:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:37:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:37:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:37:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:37:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:37:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:37:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:37:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:37:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 14:37:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:37:31,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:37:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:37:31,022 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 14:37:31,175 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:37:31,177 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:37:31,961 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:37:31,961 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:37:32,362 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:37:32,363 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-07 14:37:32,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:37:32 BoogieIcfgContainer [2024-02-07 14:37:32,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:37:32,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:37:32,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:37:32,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:37:32,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:37:28" (1/4) ... [2024-02-07 14:37:32,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418ca3d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:37:32, skipping insertion in model container [2024-02-07 14:37:32,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:37:30" (2/4) ... [2024-02-07 14:37:32,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418ca3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:37:32, skipping insertion in model container [2024-02-07 14:37:32,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:37:30" (3/4) ... [2024-02-07 14:37:32,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418ca3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:37:32, skipping insertion in model container [2024-02-07 14:37:32,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:37:32" (4/4) ... [2024-02-07 14:37:32,371 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-02-07 14:37:32,387 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:37:32,387 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2024-02-07 14:37:32,388 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:37:32,528 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 14:37:32,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 165 transitions, 358 flow [2024-02-07 14:37:32,615 INFO L124 PetriNetUnfolderBase]: 24/161 cut-off events. [2024-02-07 14:37:32,615 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 14:37:32,625 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 14:37:32,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 165 transitions, 358 flow [2024-02-07 14:37:32,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 160 transitions, 344 flow [2024-02-07 14:37:32,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:37:32,645 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;@640a776d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:37:32,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 119 error locations. [2024-02-07 14:37:32,648 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:37:32,648 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:37:32,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:37:32,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:37:32,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:37:32,650 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 14:37:32,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:37:32,654 INFO L85 PathProgramCache]: Analyzing trace with hash 51973, now seen corresponding path program 1 times [2024-02-07 14:37:32,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:37:32,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903555371] [2024-02-07 14:37:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:37:32,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:37:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:37:32,948 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 14:37:32,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:37:32,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903555371] [2024-02-07 14:37:32,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903555371] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:37:32,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:37:32,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:37:32,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267304834] [2024-02-07 14:37:32,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:37:32,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:37:32,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:37:32,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:37:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:37:32,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 165 [2024-02-07 14:37:32,997 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 14:37:32,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:37:32,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 165 [2024-02-07 14:37:32,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:37:40,262 INFO L124 PetriNetUnfolderBase]: 49371/76112 cut-off events. [2024-02-07 14:37:40,263 INFO L125 PetriNetUnfolderBase]: For 1156/1156 co-relation queries the response was YES. [2024-02-07 14:37:40,506 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 14:37:40,966 INFO L140 encePairwiseOnDemand]: 121/165 looper letters, 105 selfloop transitions, 7 changer transitions 1/175 dead transitions. [2024-02-07 14:37:40,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 175 transitions, 621 flow [2024-02-07 14:37:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:37:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:37:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2024-02-07 14:37:40,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7717171717171717 [2024-02-07 14:37:40,987 INFO L175 Difference]: Start difference. First operand has 149 places, 160 transitions, 344 flow. Second operand 3 states and 382 transitions. [2024-02-07 14:37:40,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 175 transitions, 621 flow [2024-02-07 14:37:41,203 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 14:37:41,207 INFO L231 Difference]: Finished difference. Result has 113 places, 131 transitions, 307 flow [2024-02-07 14:37:41,209 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 14:37:41,212 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -36 predicate places. [2024-02-07 14:37:41,212 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 131 transitions, 307 flow [2024-02-07 14:37:41,213 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 14:37:41,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:37:41,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:37:41,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:37:41,214 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 14:37:41,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:37:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash 49998936, now seen corresponding path program 1 times [2024-02-07 14:37:41,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:37:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214016240] [2024-02-07 14:37:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:37:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:37:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:37:41,293 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 14:37:41,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:37:41,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214016240] [2024-02-07 14:37:41,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214016240] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:37:41,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:37:41,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:37:41,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188353364] [2024-02-07 14:37:41,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:37:41,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:37:41,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:37:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:37:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:37:41,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 165 [2024-02-07 14:37:41,315 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 14:37:41,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:37:41,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 165 [2024-02-07 14:37:41,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:37:46,037 INFO L124 PetriNetUnfolderBase]: 49217/66430 cut-off events. [2024-02-07 14:37:46,037 INFO L125 PetriNetUnfolderBase]: For 8565/8565 co-relation queries the response was YES. [2024-02-07 14:37:46,196 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 14:37:46,753 INFO L140 encePairwiseOnDemand]: 152/165 looper letters, 71 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2024-02-07 14:37:46,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 139 transitions, 483 flow [2024-02-07 14:37:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:37:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:37:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-02-07 14:37:46,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-02-07 14:37:46,755 INFO L175 Difference]: Start difference. First operand has 113 places, 131 transitions, 307 flow. Second operand 3 states and 270 transitions. [2024-02-07 14:37:46,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 139 transitions, 483 flow [2024-02-07 14:37:46,762 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 14:37:46,768 INFO L231 Difference]: Finished difference. Result has 116 places, 139 transitions, 376 flow [2024-02-07 14:37:46,768 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 14:37:46,769 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -33 predicate places. [2024-02-07 14:37:46,769 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 139 transitions, 376 flow [2024-02-07 14:37:46,770 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 14:37:46,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:37:46,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-07 14:37:46,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:37:46,770 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 14:37:46,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:37:46,777 INFO L85 PathProgramCache]: Analyzing trace with hash 804390123, now seen corresponding path program 1 times [2024-02-07 14:37:46,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:37:46,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129237045] [2024-02-07 14:37:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:37:46,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:37:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:37:46,893 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 14:37:46,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:37:46,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129237045] [2024-02-07 14:37:46,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129237045] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:37:46,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993504169] [2024-02-07 14:37:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:37:46,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:37:46,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:37:46,896 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 14:37:46,897 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 14:37:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:37:47,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 14:37:47,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:37:47,054 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 14:37:47,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:37:47,064 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 14:37:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993504169] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:37:47,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:37:47,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:37:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570294331] [2024-02-07 14:37:47,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:37:47,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:37:47,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:37:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:37:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:37:47,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 165 [2024-02-07 14:37:47,078 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 14:37:47,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:37:47,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 165 [2024-02-07 14:37:47,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:37:51,558 INFO L124 PetriNetUnfolderBase]: 49221/66442 cut-off events. [2024-02-07 14:37:51,559 INFO L125 PetriNetUnfolderBase]: For 8586/8586 co-relation queries the response was YES. [2024-02-07 14:37:51,734 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 14:37:52,011 INFO L140 encePairwiseOnDemand]: 152/165 looper letters, 71 selfloop transitions, 17 changer transitions 0/147 dead transitions. [2024-02-07 14:37:52,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 147 transitions, 590 flow [2024-02-07 14:37:52,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:37:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:37:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2024-02-07 14:37:52,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-02-07 14:37:52,013 INFO L175 Difference]: Start difference. First operand has 116 places, 139 transitions, 376 flow. Second operand 4 states and 342 transitions. [2024-02-07 14:37:52,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 147 transitions, 590 flow [2024-02-07 14:37:52,019 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 14:37:52,020 INFO L231 Difference]: Finished difference. Result has 118 places, 147 transitions, 454 flow [2024-02-07 14:37:52,021 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 14:37:52,021 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -31 predicate places. [2024-02-07 14:37:52,022 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 147 transitions, 454 flow [2024-02-07 14:37:52,022 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 14:37:52,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:37:52,022 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1] [2024-02-07 14:37:52,035 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 14:37:52,225 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 14:37:52,226 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 14:37:52,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:37:52,227 INFO L85 PathProgramCache]: Analyzing trace with hash -75152194, now seen corresponding path program 2 times [2024-02-07 14:37:52,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:37:52,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711628076] [2024-02-07 14:37:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:37:52,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:37:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:37:52,343 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 14:37:52,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:37:52,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711628076] [2024-02-07 14:37:52,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711628076] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:37:52,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619973651] [2024-02-07 14:37:52,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:37:52,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:37:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:37:52,346 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 14:37:52,348 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 14:37:52,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:37:52,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:37:52,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 14:37:52,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:37:52,475 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 14:37:52,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:37:52,489 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 14:37:52,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619973651] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:37:52,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:37:52,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-02-07 14:37:52,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439553000] [2024-02-07 14:37:52,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:37:52,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:37:52,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:37:52,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:37:52,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:37:52,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 165 [2024-02-07 14:37:52,517 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 14:37:52,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:37:52,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 165 [2024-02-07 14:37:52,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:37:57,382 INFO L124 PetriNetUnfolderBase]: 49225/66454 cut-off events. [2024-02-07 14:37:57,382 INFO L125 PetriNetUnfolderBase]: For 8626/8626 co-relation queries the response was YES. [2024-02-07 14:37:57,544 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 14:37:57,812 INFO L140 encePairwiseOnDemand]: 152/165 looper letters, 71 selfloop transitions, 25 changer transitions 0/155 dead transitions. [2024-02-07 14:37:57,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 155 transitions, 694 flow [2024-02-07 14:37:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:37:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:37:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2024-02-07 14:37:57,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018181818181818 [2024-02-07 14:37:57,818 INFO L175 Difference]: Start difference. First operand has 118 places, 147 transitions, 454 flow. Second operand 5 states and 414 transitions. [2024-02-07 14:37:57,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 155 transitions, 694 flow [2024-02-07 14:37:57,824 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 14:37:57,826 INFO L231 Difference]: Finished difference. Result has 122 places, 155 transitions, 557 flow [2024-02-07 14:37:57,827 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 14:37:57,827 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -27 predicate places. [2024-02-07 14:37:57,827 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 155 transitions, 557 flow [2024-02-07 14:37:57,828 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 14:37:57,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:37:57,828 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1] [2024-02-07 14:37:57,845 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 14:37:58,045 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 14:37:58,045 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 14:37:58,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:37:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash 793238481, now seen corresponding path program 3 times [2024-02-07 14:37:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:37:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472584781] [2024-02-07 14:37:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:37:58,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:37:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:37:58,164 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 14:37:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:37:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472584781] [2024-02-07 14:37:58,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472584781] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:37:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576000706] [2024-02-07 14:37:58,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 14:37:58,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:37:58,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:37:58,166 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 14:37:58,171 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 14:37:58,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-07 14:37:58,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:37:58,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-07 14:37:58,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:37:58,426 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 14:37:58,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:37:58,592 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 14:37:58,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576000706] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:37:58,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:37:58,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-02-07 14:37:58,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547261850] [2024-02-07 14:37:58,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:37:58,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-07 14:37:58,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:37:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-07 14:37:58,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-07 14:37:58,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 165 [2024-02-07 14:37:58,616 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 14:37:58,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:37:58,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 165 [2024-02-07 14:37:58,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:38:03,894 INFO L124 PetriNetUnfolderBase]: 49233/66470 cut-off events. [2024-02-07 14:38:03,895 INFO L125 PetriNetUnfolderBase]: For 8634/8634 co-relation queries the response was YES. [2024-02-07 14:38:04,100 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 14:38:04,368 INFO L140 encePairwiseOnDemand]: 148/165 looper letters, 82 selfloop transitions, 46 changer transitions 0/183 dead transitions. [2024-02-07 14:38:04,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 183 transitions, 911 flow [2024-02-07 14:38:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:38:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:38:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 610 transitions. [2024-02-07 14:38:04,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-02-07 14:38:04,370 INFO L175 Difference]: Start difference. First operand has 122 places, 155 transitions, 557 flow. Second operand 8 states and 610 transitions. [2024-02-07 14:38:04,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 183 transitions, 911 flow [2024-02-07 14:38:04,374 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 14:38:04,376 INFO L231 Difference]: Finished difference. Result has 123 places, 167 transitions, 663 flow [2024-02-07 14:38:04,377 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 14:38:04,377 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -26 predicate places. [2024-02-07 14:38:04,377 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 167 transitions, 663 flow [2024-02-07 14:38:04,378 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 14:38:04,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:38:04,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:38:04,389 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 14:38:04,578 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 14:38:04,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 116 more)] === [2024-02-07 14:38:04,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:38:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1721325242, now seen corresponding path program 1 times [2024-02-07 14:38:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:38:04,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113442855] [2024-02-07 14:38:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:38:04,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:38:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:38:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:38:04,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:38:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113442855] [2024-02-07 14:38:04,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113442855] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:38:04,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:38:04,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:38:04,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167477715] [2024-02-07 14:38:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:38:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:38:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:38:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:38:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:38:04,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 165 [2024-02-07 14:38:04,697 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 14:38:04,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:38:04,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 165 [2024-02-07 14:38:04,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand