./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-buffer-mult-alt.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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-buffer-mult-alt.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-buffer-mult-alt.wvr.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-3d25acf-m [2024-01-30 14:40:59,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:40:59,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:40:59,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:40:59,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:40:59,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:40:59,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:40:59,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:40:59,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:40:59,730 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:40:59,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:40:59,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:40:59,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:40:59,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:40:59,732 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:40:59,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:40:59,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:40:59,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:40:59,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:40:59,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:40:59,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:40:59,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:40:59,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:40:59,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:40:59,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:40:59,734 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:40:59,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:40:59,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:40:59,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:40:59,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:40:59,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:40:59,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:40:59,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:40:59,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:40:59,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:40:59,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:40:59,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:40:59,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:40:59,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:40:59,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:40:59,738 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:40:59,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:40:59,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:40:59,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:40:59,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:40:59,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:40:59,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:40:59,975 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:40:59,975 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:40:59,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-buffer-mult-alt.wvr.yml/witness.yml [2024-01-30 14:41:00,173 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:41:00,174 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:41:00,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2024-01-30 14:41:01,291 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:41:01,504 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:41:01,505 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2024-01-30 14:41:01,515 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b5169c8/283d90c697f24f8f8b471b930ce28bd6/FLAG12a38528a [2024-01-30 14:41:01,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b5169c8/283d90c697f24f8f8b471b930ce28bd6 [2024-01-30 14:41:01,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:41:01,535 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:41:01,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:41:01,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:41:01,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:41:01,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:41:00" (1/2) ... [2024-01-30 14:41:01,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7832a6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:41:01, skipping insertion in model container [2024-01-30 14:41:01,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:41:00" (1/2) ... [2024-01-30 14:41:01,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45d21ddb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:41:01, skipping insertion in model container [2024-01-30 14:41:01,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:41:01" (2/2) ... [2024-01-30 14:41:01,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7832a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:01, skipping insertion in model container [2024-01-30 14:41:01,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:41:01" (2/2) ... [2024-01-30 14:41:01,548 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:41:01,647 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:41:01,648 INFO L98 nessWitnessExtractor]: Location invariant before [L138-L138] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,649 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,649 INFO L98 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,649 INFO L98 nessWitnessExtractor]: Location invariant before [L114-L114] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,649 INFO L98 nessWitnessExtractor]: Location invariant before [L113-L113] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,649 INFO L98 nessWitnessExtractor]: Location invariant before [L99-L99] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,649 INFO L98 nessWitnessExtractor]: Location invariant before [L128-L128] (((((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (N == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:41:01,650 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,650 INFO L98 nessWitnessExtractor]: Location invariant before [L84-L84] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,650 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,650 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= i) && (0 <= j)) && (0 <= q1_back)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,650 INFO L98 nessWitnessExtractor]: Location invariant before [L96-L96] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,650 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] ((0 <= i) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,651 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,651 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,651 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,651 INFO L98 nessWitnessExtractor]: Location invariant before [L117-L117] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,651 INFO L98 nessWitnessExtractor]: Location invariant before [L106-L106] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,651 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,652 INFO L98 nessWitnessExtractor]: Location invariant before [L115-L115] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,652 INFO L98 nessWitnessExtractor]: Location invariant before [L126-L126] (((((((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (C == 0)) && (N == 0)) && (M == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:41:01,652 INFO L98 nessWitnessExtractor]: Location invariant before [L171-L171] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-01-30 14:41:01,653 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,653 INFO L98 nessWitnessExtractor]: Location invariant before [L133-L133] (((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:41:01,653 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,653 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,653 INFO L98 nessWitnessExtractor]: Loop invariant at [L91-L100] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,653 INFO L98 nessWitnessExtractor]: Location invariant before [L88-L88] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,653 INFO L98 nessWitnessExtractor]: Location invariant before [L173-L173] (0 <= i) && (0 <= j) [2024-01-30 14:41:01,654 INFO L98 nessWitnessExtractor]: Location invariant before [L97-L97] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,654 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,654 INFO L98 nessWitnessExtractor]: Loop invariant at [L71-L82] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,654 INFO L98 nessWitnessExtractor]: Location invariant before [L165-L165] (((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && (size != 0)) && ((((((((((8 <= i && 9 <= size) && i <= 2147483646) || (8 <= size && i == 7)) || (7 <= size && i == 6)) || (6 <= size && i == 5)) || (5 <= size && i == 4)) || (4 <= size && i == 3)) || (3 <= size && i == 2)) || (2 <= size && i == 1)) || ((1 <= size && 0 == i) && i == 0)) [2024-01-30 14:41:01,654 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,654 INFO L98 nessWitnessExtractor]: Location invariant before [L140-L140] ((i == 0) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,654 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,655 INFO L98 nessWitnessExtractor]: Location invariant before [L136-L136] (((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (n2 == 0) [2024-01-30 14:41:01,655 INFO L98 nessWitnessExtractor]: Location invariant before [L144-L144] ((i == 0) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,657 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,657 INFO L98 nessWitnessExtractor]: Location invariant before [L107-L107] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,657 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,657 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,657 INFO L98 nessWitnessExtractor]: Location invariant before [L80-L80] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,658 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,658 INFO L98 nessWitnessExtractor]: Location invariant before [L130-L130] ((((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:41:01,658 INFO L98 nessWitnessExtractor]: Location invariant before [L108-L108] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,658 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,658 INFO L98 nessWitnessExtractor]: Location invariant before [L167-L167] ((((0 <= i) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,658 INFO L98 nessWitnessExtractor]: Location invariant before [L160-L160] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,659 INFO L98 nessWitnessExtractor]: Location invariant before [L110-L110] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,659 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] (((0 <= i) && (0 <= j)) && (0 <= q1_front)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,659 INFO L98 nessWitnessExtractor]: Location invariant before [L111-L111] (((0 <= i) && (0 <= j)) && (0 <= q2_front)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,659 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,660 INFO L98 nessWitnessExtractor]: Location invariant before [L127-L127] ((((((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (N == 0)) && (M == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:41:01,660 INFO L98 nessWitnessExtractor]: Location invariant before [L135-L135] ((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:41:01,660 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,661 INFO L98 nessWitnessExtractor]: Location invariant before [L81-L81] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,661 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,661 INFO L98 nessWitnessExtractor]: Location invariant before [L131-L131] (((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:41:01,661 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (((0 <= i) && (0 <= j)) && (0 <= q2_back)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,662 INFO L98 nessWitnessExtractor]: Location invariant before [L163-L163] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,662 INFO L98 nessWitnessExtractor]: Loop invariant at [L109-L118] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,662 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,662 INFO L98 nessWitnessExtractor]: Location invariant before [L161-L161] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,662 INFO L98 nessWitnessExtractor]: Location invariant before [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,662 INFO L98 nessWitnessExtractor]: Location invariant before [L172-L172] (((0 <= i) && (0 <= j)) && (1 <= b)) && (b != 0) [2024-01-30 14:41:01,662 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,663 INFO L98 nessWitnessExtractor]: Location invariant before [L116-L116] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,663 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,663 INFO L98 nessWitnessExtractor]: Location invariant before [L120-L120] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,663 INFO L98 nessWitnessExtractor]: Location invariant before [L137-L137] ((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,663 INFO L98 nessWitnessExtractor]: Location invariant before [L141-L141] ((((-2147483647 <= N) && (M <= 2147483646)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:01,663 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] ((0 <= j) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,663 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,664 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,664 INFO L98 nessWitnessExtractor]: Loop invariant at [L164-L166] ((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && ((size != 0 && ((((((((8 <= size && 8 <= i) || (7 <= size && i == 7)) || (6 <= size && i == 6)) || (5 <= size && i == 5)) || (4 <= size && i == 4)) || (3 <= size && i == 3)) || (2 <= size && i == 2)) || (1 <= size && i == 1))) || (0 == i && i == 0)) [2024-01-30 14:41:01,664 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,664 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:01,664 INFO L98 nessWitnessExtractor]: Location invariant before [L132-L132] ((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:41:01,664 INFO L98 nessWitnessExtractor]: Loop invariant at [L51-L62] (unsigned long )_argptr == 0UL [2024-01-30 14:41:01,694 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:41:01,927 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-buffer-mult-alt.wvr.c[4345,4358] [2024-01-30 14:41:01,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:41:01,941 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:41:01,951 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry 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 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 [2024-01-30 14:41:02,042 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-buffer-mult-alt.wvr.c[4345,4358] 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 [2024-01-30 14:41:02,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:41:02,086 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:41:02,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02 WrapperNode [2024-01-30 14:41:02,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:41:02,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:41:02,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:41:02,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:41:02,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,146 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 429 [2024-01-30 14:41:02,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:41:02,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:41:02,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:41:02,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:41:02,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,164 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,186 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 2, 2, 6, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 2, 1, 1]. [2024-01-30 14:41:02,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,212 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:41:02,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:41:02,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:41:02,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:41:02,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (1/1) ... [2024-01-30 14:41:02,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:41:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:41:02,263 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) [2024-01-30 14:41:02,281 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 [2024-01-30 14:41:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:41:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:41:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:41:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:41:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:41:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:41:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:41:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-30 14:41:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:41:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:41:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:41:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:41:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:41:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-30 14:41:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:41:02,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:41:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:41:02,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:41:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-30 14:41:02,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-30 14:41:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-30 14:41:02,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-30 14:41:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:41:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:41:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:41:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:41:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:41:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-30 14:41:02,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:41:02,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:41:02,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-30 14:41:02,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:41:02,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:41:02,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:41:02,309 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:41:02,419 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:41:02,421 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:41:03,204 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:41:03,204 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:41:03,615 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:41:03,615 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-30 14:41:03,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:41:03 BoogieIcfgContainer [2024-01-30 14:41:03,616 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:41:03,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:41:03,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:41:03,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:41:03,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:41:00" (1/4) ... [2024-01-30 14:41:03,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10720870 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:41:03, skipping insertion in model container [2024-01-30 14:41:03,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:41:01" (2/4) ... [2024-01-30 14:41:03,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10720870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:41:03, skipping insertion in model container [2024-01-30 14:41:03,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:02" (3/4) ... [2024-01-30 14:41:03,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10720870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:41:03, skipping insertion in model container [2024-01-30 14:41:03,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:41:03" (4/4) ... [2024-01-30 14:41:03,624 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2024-01-30 14:41:03,640 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:41:03,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 95 error locations. [2024-01-30 14:41:03,641 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:41:03,755 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-30 14:41:03,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 201 transitions, 430 flow [2024-01-30 14:41:03,854 INFO L124 PetriNetUnfolderBase]: 6/197 cut-off events. [2024-01-30 14:41:03,855 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:41:03,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 197 events. 6/197 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 725 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 162. Up to 2 conditions per place. [2024-01-30 14:41:03,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 201 transitions, 430 flow [2024-01-30 14:41:03,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 196 transitions, 416 flow [2024-01-30 14:41:03,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:41:03,887 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;@71499ed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:41:03,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 165 error locations. [2024-01-30 14:41:03,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:41:03,904 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:41:03,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:41:03,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:03,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:41:03,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 162 more)] === [2024-01-30 14:41:03,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:03,910 INFO L85 PathProgramCache]: Analyzing trace with hash 42273, now seen corresponding path program 1 times [2024-01-30 14:41:03,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:03,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421746194] [2024-01-30 14:41:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:03,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:04,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:04,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421746194] [2024-01-30 14:41:04,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421746194] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:04,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:04,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:04,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679827320] [2024-01-30 14:41:04,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:04,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:04,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:04,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:04,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:04,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 201 [2024-01-30 14:41:04,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 196 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2024-01-30 14:41:04,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:04,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 201 [2024-01-30 14:41:04,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:11,754 INFO L124 PetriNetUnfolderBase]: 57190/84475 cut-off events. [2024-01-30 14:41:11,754 INFO L125 PetriNetUnfolderBase]: For 1495/1495 co-relation queries the response was YES. [2024-01-30 14:41:11,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163927 conditions, 84475 events. 57190/84475 cut-off events. For 1495/1495 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 755791 event pairs, 57177 based on Foata normal form. 0/50972 useless extension candidates. Maximal degree in co-relation 151959. Up to 76467 conditions per place. [2024-01-30 14:41:12,562 INFO L140 encePairwiseOnDemand]: 176/201 looper letters, 96 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2024-01-30 14:41:12,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 159 transitions, 538 flow [2024-01-30 14:41:12,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:12,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2024-01-30 14:41:12,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638474295190713 [2024-01-30 14:41:12,593 INFO L175 Difference]: Start difference. First operand has 203 places, 196 transitions, 416 flow. Second operand 3 states and 340 transitions. [2024-01-30 14:41:12,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 159 transitions, 538 flow [2024-01-30 14:41:12,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 159 transitions, 522 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:41:12,783 INFO L231 Difference]: Finished difference. Result has 162 places, 159 transitions, 330 flow [2024-01-30 14:41:12,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=162, PETRI_TRANSITIONS=159} [2024-01-30 14:41:12,787 INFO L281 CegarLoopForPetriNet]: 203 programPoint places, -41 predicate places. [2024-01-30 14:41:12,787 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 159 transitions, 330 flow [2024-01-30 14:41:12,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2024-01-30 14:41:12,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:12,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:41:12,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:41:12,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 162 more)] === [2024-01-30 14:41:12,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1311849, now seen corresponding path program 1 times [2024-01-30 14:41:12,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:12,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604177631] [2024-01-30 14:41:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:12,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:12,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:12,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:12,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604177631] [2024-01-30 14:41:12,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604177631] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:12,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:12,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:12,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663300441] [2024-01-30 14:41:12,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:12,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:12,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:12,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:12,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 201 [2024-01-30 14:41:12,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 159 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2024-01-30 14:41:12,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:12,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 201 [2024-01-30 14:41:12,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:19,207 INFO L124 PetriNetUnfolderBase]: 57190/84474 cut-off events. [2024-01-30 14:41:19,208 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-01-30 14:41:19,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162046 conditions, 84474 events. 57190/84474 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 754836 event pairs, 57177 based on Foata normal form. 0/50972 useless extension candidates. Maximal degree in co-relation 162037. Up to 76465 conditions per place. [2024-01-30 14:41:19,738 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 95 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2024-01-30 14:41:19,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 522 flow [2024-01-30 14:41:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:19,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2024-01-30 14:41:19,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306799336650083 [2024-01-30 14:41:19,744 INFO L175 Difference]: Start difference. First operand has 162 places, 159 transitions, 330 flow. Second operand 3 states and 320 transitions. [2024-01-30 14:41:19,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 522 flow [2024-01-30 14:41:19,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 158 transitions, 518 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:19,748 INFO L231 Difference]: Finished difference. Result has 161 places, 158 transitions, 328 flow [2024-01-30 14:41:19,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=161, PETRI_TRANSITIONS=158} [2024-01-30 14:41:19,749 INFO L281 CegarLoopForPetriNet]: 203 programPoint places, -42 predicate places. [2024-01-30 14:41:19,749 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 158 transitions, 328 flow [2024-01-30 14:41:19,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2024-01-30 14:41:19,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:19,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:41:19,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:41:19,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 162 more)] === [2024-01-30 14:41:19,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash 40668659, now seen corresponding path program 1 times [2024-01-30 14:41:19,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:19,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218619595] [2024-01-30 14:41:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:19,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:19,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218619595] [2024-01-30 14:41:19,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218619595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:19,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:19,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662406120] [2024-01-30 14:41:19,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:19,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:19,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 201 [2024-01-30 14:41:19,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 158 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-01-30 14:41:19,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:19,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 201 [2024-01-30 14:41:19,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:26,164 INFO L124 PetriNetUnfolderBase]: 57190/84473 cut-off events. [2024-01-30 14:41:26,164 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-01-30 14:41:26,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162043 conditions, 84473 events. 57190/84473 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 755203 event pairs, 57177 based on Foata normal form. 0/50973 useless extension candidates. Maximal degree in co-relation 162032. Up to 76462 conditions per place. [2024-01-30 14:41:26,688 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 93 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2024-01-30 14:41:26,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 157 transitions, 516 flow [2024-01-30 14:41:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2024-01-30 14:41:26,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373134328358209 [2024-01-30 14:41:26,689 INFO L175 Difference]: Start difference. First operand has 161 places, 158 transitions, 328 flow. Second operand 3 states and 324 transitions. [2024-01-30 14:41:26,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 157 transitions, 516 flow [2024-01-30 14:41:26,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 157 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:26,692 INFO L231 Difference]: Finished difference. Result has 160 places, 157 transitions, 326 flow [2024-01-30 14:41:26,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=160, PETRI_TRANSITIONS=157} [2024-01-30 14:41:26,693 INFO L281 CegarLoopForPetriNet]: 203 programPoint places, -43 predicate places. [2024-01-30 14:41:26,693 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 157 transitions, 326 flow [2024-01-30 14:41:26,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-01-30 14:41:26,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:26,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:41:26,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:41:26,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 162 more)] === [2024-01-30 14:41:26,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:26,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1260729660, now seen corresponding path program 1 times [2024-01-30 14:41:26,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:26,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433162827] [2024-01-30 14:41:26,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:26,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:26,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433162827] [2024-01-30 14:41:26,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433162827] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:26,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:26,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:26,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336377532] [2024-01-30 14:41:26,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:26,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:26,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:26,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 201 [2024-01-30 14:41:26,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 157 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2024-01-30 14:41:26,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:26,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 201 [2024-01-30 14:41:26,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand