./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.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-alt2.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-alt2.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-buffer-mult-alt2.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 14:24:28,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:24:28,866 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:24:28,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:24:28,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:24:28,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:24:28,913 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:24:28,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:24:28,914 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:24:28,917 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:24:28,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:24:28,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:24:28,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:24:28,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:24:28,920 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:24:28,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:24:28,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:24:28,921 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:24:28,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:24:28,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:24:28,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:24:28,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:24:28,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:24:28,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:24:28,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:24:28,923 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:24:28,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:24:28,924 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:24:28,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:24:28,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:24:28,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:24:28,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:24:28,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:24:28,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:24:28,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:24:28,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:24:28,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:24:28,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:24:28,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:24:28,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:24:28,927 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:24:28,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:24:28,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:24:28,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:24:29,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:24:29,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:24:29,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:24:29,163 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:24:29,164 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:24:29,165 INFO L431 ainManager$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-alt2.wvr.yml/witness.yml [2024-01-30 14:24:29,313 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:24:29,313 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:24:29,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2024-01-30 14:24:30,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:24:30,506 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:24:30,507 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2024-01-30 14:24:30,515 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea9ee0f7e/96756d75da0e4cb3a0de63f3ec0ec69f/FLAGe7e17a51e [2024-01-30 14:24:30,527 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea9ee0f7e/96756d75da0e4cb3a0de63f3ec0ec69f [2024-01-30 14:24:30,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:24:30,530 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:24:30,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:24:30,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:24:30,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:24:30,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:24:29" (1/2) ... [2024-01-30 14:24:30,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e32dac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:24:30, skipping insertion in model container [2024-01-30 14:24:30,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:24:29" (1/2) ... [2024-01-30 14:24:30,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e9bc15a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:24:30, skipping insertion in model container [2024-01-30 14:24:30,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:24:30" (2/2) ... [2024-01-30 14:24:30,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e32dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30, skipping insertion in model container [2024-01-30 14:24:30,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:24:30" (2/2) ... [2024-01-30 14:24:30,542 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:24:30,603 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:24:30,604 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,604 INFO L98 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,605 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,605 INFO L98 nessWitnessExtractor]: Location invariant before [L156-L156] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,605 INFO L98 nessWitnessExtractor]: Location invariant before [L136-L136] ((i == 0) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,605 INFO L98 nessWitnessExtractor]: Location invariant before [L110-L110] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,606 INFO L98 nessWitnessExtractor]: Location invariant before [L159-L159] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,606 INFO L98 nessWitnessExtractor]: Location invariant before [L137-L137] ((((-2147483647 <= N) && (M <= 2147483646)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,606 INFO L98 nessWitnessExtractor]: Location invariant before [L103-L103] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,606 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,606 INFO L98 nessWitnessExtractor]: Loop invariant at [L160-L162] ((((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 14:24:30,606 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= i) && (0 <= j)) && (0 <= q1_back)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,606 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,606 INFO L98 nessWitnessExtractor]: Location invariant before [L133-L133] ((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,607 INFO L98 nessWitnessExtractor]: Location invariant before [L126-L126] ((((((((((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 14:24:30,607 INFO L98 nessWitnessExtractor]: Location invariant before [L128-L128] ((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:24:30,607 INFO L98 nessWitnessExtractor]: Loop invariant at [L51-L60] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,607 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,607 INFO L98 nessWitnessExtractor]: Location invariant before [L140-L140] ((i == 0) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,607 INFO L98 nessWitnessExtractor]: Location invariant before [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,607 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,608 INFO L98 nessWitnessExtractor]: Location invariant before [L106-L106] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,608 INFO L98 nessWitnessExtractor]: Location invariant before [L84-L84] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,608 INFO L98 nessWitnessExtractor]: Location invariant before [L108-L108] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,608 INFO L98 nessWitnessExtractor]: Location invariant before [L124-L124] (((((((((((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 14:24:30,608 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,609 INFO L98 nessWitnessExtractor]: Loop invariant at [L87-L96] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,609 INFO L98 nessWitnessExtractor]: Location invariant before [L113-L113] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,609 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,609 INFO L98 nessWitnessExtractor]: Location invariant before [L163-L163] ((((0 <= i) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,609 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (((-2147483647 <= q2_back) && (0 <= i)) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,609 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,609 INFO L98 nessWitnessExtractor]: Location invariant before [L123-L123] ((((((((((((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 14:24:30,609 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,610 INFO L98 nessWitnessExtractor]: Loop invariant at [L69-L78] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,610 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,610 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,611 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,612 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,612 INFO L98 nessWitnessExtractor]: Location invariant before [L116-L116] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,612 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,612 INFO L98 nessWitnessExtractor]: Location invariant before [L132-L132] (((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (n2 == 0) [2024-01-30 14:24:30,612 INFO L98 nessWitnessExtractor]: Location invariant before [L168-L168] (0 <= i) && (0 <= j) [2024-01-30 14:24:30,612 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,612 INFO L98 nessWitnessExtractor]: Location invariant before [L134-L134] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,613 INFO L98 nessWitnessExtractor]: Loop invariant at [L105-L114] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,613 INFO L98 nessWitnessExtractor]: Location invariant before [L129-L129] (((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:24:30,613 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,613 INFO L98 nessWitnessExtractor]: Location invariant before [L161-L161] (((((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 14:24:30,613 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (((0 <= i) && (0 <= j)) && (0 <= q1_front)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,613 INFO L98 nessWitnessExtractor]: Location invariant before [L169-L169] (0 <= i) && (0 <= j) [2024-01-30 14:24:30,614 INFO L98 nessWitnessExtractor]: Location invariant before [L122-L122] (((((((((((((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 14:24:30,614 INFO L98 nessWitnessExtractor]: Location invariant before [L88-L88] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,614 INFO L98 nessWitnessExtractor]: Location invariant before [L109-L109] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,614 INFO L98 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,615 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,615 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,615 INFO L98 nessWitnessExtractor]: Location invariant before [L107-L107] (((0 <= i) && (0 <= j)) && (0 <= q2_front)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,616 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,616 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,616 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,616 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (((-2147483647 <= q1_back) && (0 <= j)) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,616 INFO L98 nessWitnessExtractor]: Location invariant before [L80-L80] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,616 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,616 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,617 INFO L98 nessWitnessExtractor]: Location invariant before [L104-L104] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,617 INFO L98 nessWitnessExtractor]: Location invariant before [L157-L157] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:24:30,617 INFO L98 nessWitnessExtractor]: Location invariant before [L127-L127] (((((((((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 14:24:30,617 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,617 INFO L98 nessWitnessExtractor]: Location invariant before [L131-L131] ((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:24:30,617 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] (((0 <= i) && (0 <= j)) && (0 <= q2_back)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,617 INFO L98 nessWitnessExtractor]: Location invariant before [L167-L167] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-01-30 14:24:30,617 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,618 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-30 14:24:30,618 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,618 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:24:30,645 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:24:30,789 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-alt2.wvr.c[4226,4239] [2024-01-30 14:24:30,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:24:30,815 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:24:30,824 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 [2024-01-30 14:24:30,902 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-alt2.wvr.c[4226,4239] 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 14:24:30,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:24:30,931 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:24:30,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30 WrapperNode [2024-01-30 14:24:30,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:24:30,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:24:30,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:24:30,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:24:30,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:30,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:30,994 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 421 [2024-01-30 14:24:30,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:24:30,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:24:30,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:24:30,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:24:31,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,040 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 2, 6, 2, 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, 2, 1, 1, 1]. [2024-01-30 14:24:31,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:24:31,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:24:31,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:24:31,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:24:31,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (1/1) ... [2024-01-30 14:24:31,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:24:31,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:24:31,127 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 14:24:31,146 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 14:24:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:24:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:24:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:24:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:24:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:24:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:24:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:24:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-30 14:24:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:24:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:24:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:24:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:24:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:24:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-30 14:24:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:24:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:24:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:24:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:24:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-30 14:24:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-30 14:24:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-30 14:24:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-30 14:24:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:24:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:24:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:24:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:24:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:24:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-30 14:24:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:24:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:24:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-30 14:24:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:24:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:24:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:24:31,181 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 14:24:31,283 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:24:31,285 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:24:31,952 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:24:31,953 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:24:32,306 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:24:32,306 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-30 14:24:32,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:24:32 BoogieIcfgContainer [2024-01-30 14:24:32,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:24:32,308 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:24:32,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:24:32,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:24:32,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:24:29" (1/4) ... [2024-01-30 14:24:32,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7b03fc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:24:32, skipping insertion in model container [2024-01-30 14:24:32,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:24:30" (2/4) ... [2024-01-30 14:24:32,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7b03fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:24:32, skipping insertion in model container [2024-01-30 14:24:32,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:24:30" (3/4) ... [2024-01-30 14:24:32,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7b03fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:24:32, skipping insertion in model container [2024-01-30 14:24:32,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:24:32" (4/4) ... [2024-01-30 14:24:32,313 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2024-01-30 14:24:32,328 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:24:32,328 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 91 error locations. [2024-01-30 14:24:32,328 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:24:32,457 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-30 14:24:32,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 193 transitions, 414 flow [2024-01-30 14:24:32,527 INFO L124 PetriNetUnfolderBase]: 6/189 cut-off events. [2024-01-30 14:24:32,527 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:24:32,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 189 events. 6/189 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 647 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2024-01-30 14:24:32,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 193 transitions, 414 flow [2024-01-30 14:24:32,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 188 transitions, 400 flow [2024-01-30 14:24:32,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:24:32,547 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;@58540860, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:24:32,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 157 error locations. [2024-01-30 14:24:32,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:24:32,549 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:24:32,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:24:32,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:24:32,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:24:32,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 154 more)] === [2024-01-30 14:24:32,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:24:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash 38370, now seen corresponding path program 1 times [2024-01-30 14:24:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:24:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885877764] [2024-01-30 14:24:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:24:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:24:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:24:32,978 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 14:24:32,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:24:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885877764] [2024-01-30 14:24:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885877764] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:24:32,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:24:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:24:32,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560764409] [2024-01-30 14:24:32,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:24:32,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:24:32,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:24:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:24:33,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:24:33,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 193 [2024-01-30 14:24:33,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 188 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 14:24:33,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:24:33,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 193 [2024-01-30 14:24:33,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:24:41,804 INFO L124 PetriNetUnfolderBase]: 60444/89177 cut-off events. [2024-01-30 14:24:41,804 INFO L125 PetriNetUnfolderBase]: For 1767/1767 co-relation queries the response was YES. [2024-01-30 14:24:42,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171787 conditions, 89177 events. 60444/89177 cut-off events. For 1767/1767 co-relation queries the response was YES. Maximal size of possible extension queue 5297. Compared 806951 event pairs, 59721 based on Foata normal form. 0/53426 useless extension candidates. Maximal degree in co-relation 156177. Up to 79791 conditions per place. [2024-01-30 14:24:42,650 INFO L140 encePairwiseOnDemand]: 166/193 looper letters, 96 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2024-01-30 14:24:42,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 163 transitions, 546 flow [2024-01-30 14:24:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:24:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:24:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2024-01-30 14:24:42,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5699481865284974 [2024-01-30 14:24:42,668 INFO L175 Difference]: Start difference. First operand has 195 places, 188 transitions, 400 flow. Second operand 3 states and 330 transitions. [2024-01-30 14:24:42,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 163 transitions, 546 flow [2024-01-30 14:24:43,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 163 transitions, 530 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:24:43,646 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 338 flow [2024-01-30 14:24:43,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2024-01-30 14:24:43,650 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -31 predicate places. [2024-01-30 14:24:43,650 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 338 flow [2024-01-30 14:24:43,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 14:24:43,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:24:43,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:24:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:24:43,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 154 more)] === [2024-01-30 14:24:43,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:24:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1190662, now seen corresponding path program 1 times [2024-01-30 14:24:43,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:24:43,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941502144] [2024-01-30 14:24:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:24:43,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:24:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:24:43,784 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 14:24:43,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:24:43,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941502144] [2024-01-30 14:24:43,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941502144] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:24:43,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:24:43,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:24:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574331375] [2024-01-30 14:24:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:24:43,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:24:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:24:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:24:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:24:43,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 193 [2024-01-30 14:24:43,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 14:24:43,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:24:43,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 193 [2024-01-30 14:24:43,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:24:50,890 INFO L124 PetriNetUnfolderBase]: 60444/89176 cut-off events. [2024-01-30 14:24:50,890 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-01-30 14:24:51,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169872 conditions, 89176 events. 60444/89176 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 5297. Compared 806672 event pairs, 59721 based on Foata normal form. 0/53426 useless extension candidates. Maximal degree in co-relation 169863. Up to 79789 conditions per place. [2024-01-30 14:24:51,578 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 95 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2024-01-30 14:24:51,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 530 flow [2024-01-30 14:24:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:24:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:24:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2024-01-30 14:24:51,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531951640759931 [2024-01-30 14:24:51,581 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 338 flow. Second operand 3 states and 308 transitions. [2024-01-30 14:24:51,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 530 flow [2024-01-30 14:24:51,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 162 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:24:51,586 INFO L231 Difference]: Finished difference. Result has 163 places, 162 transitions, 336 flow [2024-01-30 14:24:51,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=163, PETRI_TRANSITIONS=162} [2024-01-30 14:24:51,587 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -32 predicate places. [2024-01-30 14:24:51,587 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 162 transitions, 336 flow [2024-01-30 14:24:51,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 14:24:51,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:24:51,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:24:51,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:24:51,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 154 more)] === [2024-01-30 14:24:51,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:24:51,589 INFO L85 PathProgramCache]: Analyzing trace with hash 36911798, now seen corresponding path program 1 times [2024-01-30 14:24:51,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:24:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270535155] [2024-01-30 14:24:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:24:51,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:24:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:24:51,875 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 14:24:51,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:24:51,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270535155] [2024-01-30 14:24:51,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270535155] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:24:51,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:24:51,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:24:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096290496] [2024-01-30 14:24:51,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:24:51,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:24:51,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:24:51,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:24:51,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:24:51,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 193 [2024-01-30 14:24:51,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 162 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 14:24:51,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:24:51,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 193 [2024-01-30 14:24:51,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:24:59,111 INFO L124 PetriNetUnfolderBase]: 60444/89175 cut-off events. [2024-01-30 14:24:59,112 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-01-30 14:24:59,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169869 conditions, 89175 events. 60444/89175 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 5297. Compared 807582 event pairs, 59721 based on Foata normal form. 0/53427 useless extension candidates. Maximal degree in co-relation 169858. Up to 79786 conditions per place. [2024-01-30 14:24:59,742 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 93 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2024-01-30 14:24:59,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 161 transitions, 524 flow [2024-01-30 14:24:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:24:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:24:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2024-01-30 14:24:59,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538860103626943 [2024-01-30 14:24:59,744 INFO L175 Difference]: Start difference. First operand has 163 places, 162 transitions, 336 flow. Second operand 3 states and 312 transitions. [2024-01-30 14:24:59,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 161 transitions, 524 flow [2024-01-30 14:24:59,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 161 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:24:59,750 INFO L231 Difference]: Finished difference. Result has 162 places, 161 transitions, 334 flow [2024-01-30 14:24:59,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=162, PETRI_TRANSITIONS=161} [2024-01-30 14:24:59,751 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -33 predicate places. [2024-01-30 14:24:59,751 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 161 transitions, 334 flow [2024-01-30 14:24:59,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 14:24:59,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:24:59,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:24:59,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:24:59,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 154 more)] === [2024-01-30 14:24:59,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:24:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1144266994, now seen corresponding path program 1 times [2024-01-30 14:24:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:24:59,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267515661] [2024-01-30 14:24:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:24:59,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:24:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:24:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:24:59,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:24:59,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267515661] [2024-01-30 14:24:59,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267515661] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:24:59,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:24:59,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:24:59,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579941262] [2024-01-30 14:24:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:24:59,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:24:59,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:24:59,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:24:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:24:59,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 193 [2024-01-30 14:24:59,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 161 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 14:24:59,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:24:59,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 193 [2024-01-30 14:24:59,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand