./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.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/popl20-bad-buffer-mult-alt2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b 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.2024-01-24_13-31-21.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-d8006e4-m [2024-02-05 10:34:25,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:34:25,353 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:34:25,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:34:25,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:34:25,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:34:25,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:34:25,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:34:25,387 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:34:25,392 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:34:25,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:34:25,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:34:25,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:34:25,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:34:25,395 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:34:25,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:34:25,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:34:25,396 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:34:25,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:34:25,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:34:25,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:34:25,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:34:25,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:34:25,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:34:25,398 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:34:25,398 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:34:25,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:34:25,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:34:25,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:34:25,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:34:25,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:34:25,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:34:25,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:34:25,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:34:25,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:34:25,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:34:25,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:34:25,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:34:25,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:34:25,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:34:25,403 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:34:25,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:34:25,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:34:25,403 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:34:25,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:34:25,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:34:25,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:34:25,681 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:34:25,682 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:34:25,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2024-02-05 10:34:26,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:34:27,075 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:34:27,083 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2024-02-05 10:34:27,109 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631c0f9e4/204e8614348e4649861da392d562aa66/FLAGf359f54c4 [2024-02-05 10:34:27,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631c0f9e4/204e8614348e4649861da392d562aa66 [2024-02-05 10:34:27,128 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:34:27,129 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:34:27,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/popl20-bad-buffer-mult-alt2.wvr.yml/witness.yml [2024-02-05 10:34:27,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:34:27,265 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:34:27,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:34:27,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:34:27,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:34:27,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:34:27" (1/2) ... [2024-02-05 10:34:27,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b98e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:27, skipping insertion in model container [2024-02-05 10:34:27,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:34:27" (1/2) ... [2024-02-05 10:34:27,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@380c489a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:34:27, skipping insertion in model container [2024-02-05 10:34:27,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:34:27" (2/2) ... [2024-02-05 10:34:27,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b98e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27, skipping insertion in model container [2024-02-05 10:34:27,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:34:27" (2/2) ... [2024-02-05 10:34:27,273 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:34:27,339 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:34:27,340 INFO L101 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,340 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,341 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,341 INFO L101 nessWitnessExtractor]: Location invariant before [L159-L159] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:34:27,341 INFO L101 nessWitnessExtractor]: Location invariant before [L85-L85] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,342 INFO L101 nessWitnessExtractor]: Location invariant before [L77-L77] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,342 INFO L101 nessWitnessExtractor]: Loop invariant at [L160-L160] ((((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)) [2024-02-05 10:34:27,342 INFO L101 nessWitnessExtractor]: Location invariant before [L167-L167] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-02-05 10:34:27,342 INFO L101 nessWitnessExtractor]: Location invariant after [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,342 INFO L101 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,342 INFO L101 nessWitnessExtractor]: Location invariant before [L80-L80] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,342 INFO L101 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,343 INFO L101 nessWitnessExtractor]: Location invariant before [L137-L137] ((((-2147483647 <= N) && (M <= 2147483646)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:34:27,343 INFO L101 nessWitnessExtractor]: Location invariant before [L116-L116] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,343 INFO L101 nessWitnessExtractor]: Location invariant before [L95-L95] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,343 INFO L101 nessWitnessExtractor]: Location invariant after [L103-L103] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,343 INFO L101 nessWitnessExtractor]: Location invariant before [L133-L133] ((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:34:27,343 INFO L101 nessWitnessExtractor]: Location invariant before [L90-L90] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,343 INFO L101 nessWitnessExtractor]: Location invariant before [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,344 INFO L101 nessWitnessExtractor]: Location invariant before [L73-L73] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,344 INFO L101 nessWitnessExtractor]: Location invariant before [L67-L67] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,344 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] (((-2147483647 <= q2_back) && (0 <= i)) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,344 INFO L101 nessWitnessExtractor]: Location invariant before [L156-L156] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:34:27,345 INFO L101 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) [2024-02-05 10:34:27,345 INFO L101 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,345 INFO L101 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) [2024-02-05 10:34:27,345 INFO L101 nessWitnessExtractor]: Location invariant before [L56-L56] (((-2147483647 <= q1_back) && (0 <= j)) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,345 INFO L101 nessWitnessExtractor]: Location invariant before [L131-L131] ((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (n1 == 0)) && (n2 == 0) [2024-02-05 10:34:27,345 INFO L101 nessWitnessExtractor]: Location invariant before [L55-L55] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,345 INFO L101 nessWitnessExtractor]: Location invariant before [L91-L91] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,346 INFO L101 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)) [2024-02-05 10:34:27,346 INFO L101 nessWitnessExtractor]: Location invariant before [L88-L88] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,346 INFO L101 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,346 INFO L101 nessWitnessExtractor]: Location invariant before [L68-L68] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,346 INFO L101 nessWitnessExtractor]: Location invariant before [L103-L103] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,346 INFO L101 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,346 INFO L101 nessWitnessExtractor]: Location invariant before [L129-L129] (((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-02-05 10:34:27,346 INFO L101 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,348 INFO L101 nessWitnessExtractor]: Location invariant before [L108-L108] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,348 INFO L101 nessWitnessExtractor]: Location invariant before [L113-L113] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,348 INFO L101 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) [2024-02-05 10:34:27,348 INFO L101 nessWitnessExtractor]: Location invariant before [L168-L168] (0 <= i) && (0 <= j) [2024-02-05 10:34:27,348 INFO L101 nessWitnessExtractor]: Location invariant before [L132-L132] (((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (n2 == 0) [2024-02-05 10:34:27,348 INFO L101 nessWitnessExtractor]: Loop invariant at [L69-L69] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,348 INFO L101 nessWitnessExtractor]: Location invariant before [L169-L169] (0 <= i) && (0 <= j) [2024-02-05 10:34:27,349 INFO L101 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) [2024-02-05 10:34:27,349 INFO L101 nessWitnessExtractor]: Location invariant before [L84-L84] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,349 INFO L101 nessWitnessExtractor]: Location invariant before [L140-L140] ((i == 0) && (j == 0)) && (total == 0) [2024-02-05 10:34:27,349 INFO L101 nessWitnessExtractor]: Loop invariant at [L51-L51] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,349 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,349 INFO L101 nessWitnessExtractor]: Location invariant before [L110-L110] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,350 INFO L101 nessWitnessExtractor]: Location invariant before [L98-L98] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,350 INFO L101 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) [2024-02-05 10:34:27,350 INFO L101 nessWitnessExtractor]: Loop invariant at [L87-L87] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,350 INFO L101 nessWitnessExtractor]: Location invariant before [L163-L163] ((((0 <= i) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:34:27,351 INFO L101 nessWitnessExtractor]: Location invariant before [L71-L71] (((0 <= i) && (0 <= j)) && (0 <= q2_back)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,351 INFO L101 nessWitnessExtractor]: Location invariant before [L109-L109] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,352 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,352 INFO L101 nessWitnessExtractor]: Location invariant before [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,352 INFO L101 nessWitnessExtractor]: Location invariant before [L136-L136] ((i == 0) && (j == 0)) && (total == 0) [2024-02-05 10:34:27,352 INFO L101 nessWitnessExtractor]: Location invariant before [L72-L72] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,352 INFO L101 nessWitnessExtractor]: Location invariant before [L89-L89] (((0 <= i) && (0 <= j)) && (0 <= q1_front)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,352 INFO L101 nessWitnessExtractor]: Loop invariant at [L105-L105] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,353 INFO L101 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,353 INFO L101 nessWitnessExtractor]: Location invariant before [L157-L157] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:34:27,353 INFO L101 nessWitnessExtractor]: Location invariant before [L107-L107] (((0 <= i) && (0 <= j)) && (0 <= q2_front)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,353 INFO L101 nessWitnessExtractor]: Location invariant before [L134-L134] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:34:27,353 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,353 INFO L101 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) [2024-02-05 10:34:27,353 INFO L101 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,353 INFO L101 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,354 INFO L101 nessWitnessExtractor]: Location invariant after [L85-L85] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,354 INFO L101 nessWitnessExtractor]: Location invariant after [L67-L67] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,354 INFO L101 nessWitnessExtractor]: Location invariant before [L106-L106] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,354 INFO L101 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-02-05 10:34:27,354 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,354 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= i) && (0 <= j)) && (0 <= q1_back)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,354 INFO L101 nessWitnessExtractor]: Location invariant before [L104-L104] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,354 INFO L101 nessWitnessExtractor]: Location invariant before [L92-L92] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:34:27,381 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:34:27,537 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] [2024-02-05 10:34:27,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:34:27,553 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-05 10:34:27,628 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:34:27,628 WARN L424 MainDispatcher]: Unable to annotate cond = i < N 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 [2024-02-05 10:34:27,637 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:34:27,638 WARN L424 MainDispatcher]: Unable to annotate cond = j < M 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 [2024-02-05 10:34:27,645 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:34:27,645 WARN L424 MainDispatcher]: Unable to annotate cond = i < N || q1_front < q1_back 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 [2024-02-05 10:34:27,652 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:34:27,652 WARN L424 MainDispatcher]: Unable to annotate cond = j < M || q2_front < q2_back 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 [2024-02-05 10:34:27,683 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 [2024-02-05 10:34:27,685 WARN L424 MainDispatcher]: Unable to annotate * arr = (int*)malloc(sizeof(int) * (size_t)size) with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-05 10:34:27,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:34:27,706 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:34:27,707 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27 WrapperNode [2024-02-05 10:34:27,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:34:27,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:34:27,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:34:27,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:34:27,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,763 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 409 [2024-02-05 10:34:27,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:34:27,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:34:27,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:34:27,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:34:27,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,779 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,801 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]. [2024-02-05 10:34:27,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:34:27,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:34:27,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:34:27,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:34:27,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (1/1) ... [2024-02-05 10:34:27,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:34:27,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:34:27,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-05 10:34:27,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-05 10:34:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:34:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:34:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:34:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:34:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:34:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-05 10:34:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-05 10:34:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-05 10:34:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:34:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:34:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:34:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-05 10:34:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-05 10:34:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-05 10:34:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-05 10:34:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-05 10:34:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-05 10:34:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-05 10:34:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-05 10:34:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-05 10:34:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-05 10:34:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-05 10:34:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:34:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:34:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:34:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-05 10:34:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-05 10:34:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-05 10:34:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:34:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:34:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-05 10:34:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:34:27,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:34:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:34:27,916 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:34:28,033 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:34:28,035 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:34:28,761 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:34:28,762 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:34:29,148 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:34:29,149 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-05 10:34:29,149 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:34:29 BoogieIcfgContainer [2024-02-05 10:34:29,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:34:29,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:34:29,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:34:29,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:34:29,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:34:27" (1/4) ... [2024-02-05 10:34:29,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9b4041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:34:29, skipping insertion in model container [2024-02-05 10:34:29,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:34:27" (2/4) ... [2024-02-05 10:34:29,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9b4041 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:34:29, skipping insertion in model container [2024-02-05 10:34:29,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:34:27" (3/4) ... [2024-02-05 10:34:29,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9b4041 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:34:29, skipping insertion in model container [2024-02-05 10:34:29,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:34:29" (4/4) ... [2024-02-05 10:34:29,156 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2024-02-05 10:34:29,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:34:29,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2024-02-05 10:34:29,171 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:34:29,279 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-05 10:34:29,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 177 transitions, 382 flow [2024-02-05 10:34:29,354 INFO L124 PetriNetUnfolderBase]: 10/173 cut-off events. [2024-02-05 10:34:29,354 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:34:29,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 173 events. 10/173 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 547 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2024-02-05 10:34:29,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 177 transitions, 382 flow [2024-02-05 10:34:29,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 172 transitions, 368 flow [2024-02-05 10:34:29,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:34:29,377 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;@42388841, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:34:29,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 137 error locations. [2024-02-05 10:34:29,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:34:29,379 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:34:29,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:34:29,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:34:29,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:34:29,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-02-05 10:34:29,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:34:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash 36834, now seen corresponding path program 1 times [2024-02-05 10:34:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:34:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128844861] [2024-02-05 10:34:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:34:29,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:34:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:34:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:34:29,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:34:29,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128844861] [2024-02-05 10:34:29,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128844861] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:34:29,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:34:29,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:34:29,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127527556] [2024-02-05 10:34:29,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:34:29,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:34:29,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:34:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:34:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:34:29,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 177 [2024-02-05 10:34:29,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:29,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:34:29,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 177 [2024-02-05 10:34:29,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:34:34,932 INFO L124 PetriNetUnfolderBase]: 27477/41126 cut-off events. [2024-02-05 10:34:34,932 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2024-02-05 10:34:35,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78282 conditions, 41126 events. 27477/41126 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343440 event pairs, 23377 based on Foata normal form. 4098/26599 useless extension candidates. Maximal degree in co-relation 69648. Up to 35731 conditions per place. [2024-02-05 10:34:35,306 INFO L140 encePairwiseOnDemand]: 150/177 looper letters, 90 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-02-05 10:34:35,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 147 transitions, 502 flow [2024-02-05 10:34:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:34:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:34:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2024-02-05 10:34:35,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536723163841808 [2024-02-05 10:34:35,324 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 368 flow. Second operand 3 states and 294 transitions. [2024-02-05 10:34:35,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 147 transitions, 502 flow [2024-02-05 10:34:35,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 147 transitions, 486 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:34:35,390 INFO L231 Difference]: Finished difference. Result has 148 places, 147 transitions, 306 flow [2024-02-05 10:34:35,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=148, PETRI_TRANSITIONS=147} [2024-02-05 10:34:35,395 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -27 predicate places. [2024-02-05 10:34:35,395 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 147 transitions, 306 flow [2024-02-05 10:34:35,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:35,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:34:35,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-05 10:34:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:34:35,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-02-05 10:34:35,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:34:35,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1142994, now seen corresponding path program 1 times [2024-02-05 10:34:35,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:34:35,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027857708] [2024-02-05 10:34:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:34:35,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:34:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:34:35,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:34:35,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:34:35,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027857708] [2024-02-05 10:34:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027857708] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:34:35,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:34:35,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:34:35,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572558533] [2024-02-05 10:34:35,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:34:35,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:34:35,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:34:35,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:34:35,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:34:35,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 177 [2024-02-05 10:34:35,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 147 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:35,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:34:35,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 177 [2024-02-05 10:34:35,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:34:39,855 INFO L124 PetriNetUnfolderBase]: 27477/41125 cut-off events. [2024-02-05 10:34:39,856 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:34:39,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77309 conditions, 41125 events. 27477/41125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343048 event pairs, 23377 based on Foata normal form. 0/22501 useless extension candidates. Maximal degree in co-relation 77300. Up to 35729 conditions per place. [2024-02-05 10:34:40,379 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 89 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2024-02-05 10:34:40,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 146 transitions, 486 flow [2024-02-05 10:34:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:34:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:34:40,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2024-02-05 10:34:40,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512241054613936 [2024-02-05 10:34:40,382 INFO L175 Difference]: Start difference. First operand has 148 places, 147 transitions, 306 flow. Second operand 3 states and 272 transitions. [2024-02-05 10:34:40,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 146 transitions, 486 flow [2024-02-05 10:34:40,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 146 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:34:40,384 INFO L231 Difference]: Finished difference. Result has 147 places, 146 transitions, 304 flow [2024-02-05 10:34:40,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=147, PETRI_TRANSITIONS=146} [2024-02-05 10:34:40,385 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -28 predicate places. [2024-02-05 10:34:40,385 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 146 transitions, 304 flow [2024-02-05 10:34:40,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:40,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:34:40,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-05 10:34:40,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:34:40,386 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-02-05 10:34:40,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:34:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash 35434026, now seen corresponding path program 1 times [2024-02-05 10:34:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:34:40,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291962675] [2024-02-05 10:34:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:34:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:34:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:34:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:34:40,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:34:40,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291962675] [2024-02-05 10:34:40,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291962675] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:34:40,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:34:40,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:34:40,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115826939] [2024-02-05 10:34:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:34:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:34:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:34:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:34:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:34:40,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 177 [2024-02-05 10:34:40,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 146 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:40,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:34:40,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 177 [2024-02-05 10:34:40,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:34:44,099 INFO L124 PetriNetUnfolderBase]: 27477/41124 cut-off events. [2024-02-05 10:34:44,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:34:44,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77306 conditions, 41124 events. 27477/41124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 342884 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77295. Up to 35726 conditions per place. [2024-02-05 10:34:44,437 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 87 selfloop transitions, 2 changer transitions 0/145 dead transitions. [2024-02-05 10:34:44,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 145 transitions, 480 flow [2024-02-05 10:34:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:34:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:34:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2024-02-05 10:34:44,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519774011299435 [2024-02-05 10:34:44,439 INFO L175 Difference]: Start difference. First operand has 147 places, 146 transitions, 304 flow. Second operand 3 states and 276 transitions. [2024-02-05 10:34:44,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 145 transitions, 480 flow [2024-02-05 10:34:44,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:34:44,442 INFO L231 Difference]: Finished difference. Result has 146 places, 145 transitions, 302 flow [2024-02-05 10:34:44,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=146, PETRI_TRANSITIONS=145} [2024-02-05 10:34:44,443 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -29 predicate places. [2024-02-05 10:34:44,443 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 145 transitions, 302 flow [2024-02-05 10:34:44,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:44,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:34:44,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:34:44,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:34:44,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-02-05 10:34:44,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:34:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1098456002, now seen corresponding path program 1 times [2024-02-05 10:34:44,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:34:44,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983300715] [2024-02-05 10:34:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:34:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:34:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:34:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:34:44,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:34:44,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983300715] [2024-02-05 10:34:44,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983300715] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:34:44,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:34:44,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:34:44,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188154441] [2024-02-05 10:34:44,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:34:44,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:34:44,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:34:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:34:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:34:44,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 177 [2024-02-05 10:34:44,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 145 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:44,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:34:44,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 177 [2024-02-05 10:34:44,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:34:48,195 INFO L124 PetriNetUnfolderBase]: 27477/41123 cut-off events. [2024-02-05 10:34:48,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:34:48,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77304 conditions, 41123 events. 27477/41123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343181 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77291. Up to 35724 conditions per place. [2024-02-05 10:34:48,548 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 86 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2024-02-05 10:34:48,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 144 transitions, 476 flow [2024-02-05 10:34:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:34:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:34:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-02-05 10:34:48,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235404896421846 [2024-02-05 10:34:48,551 INFO L175 Difference]: Start difference. First operand has 146 places, 145 transitions, 302 flow. Second operand 3 states and 278 transitions. [2024-02-05 10:34:48,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 144 transitions, 476 flow [2024-02-05 10:34:48,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 144 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:34:48,554 INFO L231 Difference]: Finished difference. Result has 145 places, 144 transitions, 300 flow [2024-02-05 10:34:48,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=145, PETRI_TRANSITIONS=144} [2024-02-05 10:34:48,555 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -30 predicate places. [2024-02-05 10:34:48,555 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 144 transitions, 300 flow [2024-02-05 10:34:48,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:48,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:34:48,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:34:48,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:34:48,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-02-05 10:34:48,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:34:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash -307601031, now seen corresponding path program 1 times [2024-02-05 10:34:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:34:48,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634734769] [2024-02-05 10:34:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:34:48,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:34:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:34:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:34:48,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:34:48,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634734769] [2024-02-05 10:34:48,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634734769] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:34:48,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:34:48,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:34:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163276463] [2024-02-05 10:34:48,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:34:48,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:34:48,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:34:48,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:34:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:34:48,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 177 [2024-02-05 10:34:48,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 144 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:48,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:34:48,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 177 [2024-02-05 10:34:48,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:34:52,810 INFO L124 PetriNetUnfolderBase]: 27477/41122 cut-off events. [2024-02-05 10:34:52,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:34:52,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77302 conditions, 41122 events. 27477/41122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343209 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77287. Up to 35722 conditions per place. [2024-02-05 10:34:53,145 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 85 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2024-02-05 10:34:53,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 143 transitions, 472 flow [2024-02-05 10:34:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:34:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:34:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2024-02-05 10:34:53,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527306967984934 [2024-02-05 10:34:53,147 INFO L175 Difference]: Start difference. First operand has 145 places, 144 transitions, 300 flow. Second operand 3 states and 280 transitions. [2024-02-05 10:34:53,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 143 transitions, 472 flow [2024-02-05 10:34:53,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 143 transitions, 468 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:34:53,150 INFO L231 Difference]: Finished difference. Result has 144 places, 143 transitions, 298 flow [2024-02-05 10:34:53,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=144, PETRI_TRANSITIONS=143} [2024-02-05 10:34:53,151 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -31 predicate places. [2024-02-05 10:34:53,151 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 143 transitions, 298 flow [2024-02-05 10:34:53,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:53,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:34:53,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:34:53,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:34:53,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-02-05 10:34:53,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:34:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash -945696190, now seen corresponding path program 1 times [2024-02-05 10:34:53,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:34:53,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851963738] [2024-02-05 10:34:53,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:34:53,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:34:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:34:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:34:53,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:34:53,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851963738] [2024-02-05 10:34:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851963738] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:34:53,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:34:53,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:34:53,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063547372] [2024-02-05 10:34:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:34:53,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:34:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:34:53,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:34:53,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:34:53,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 177 [2024-02-05 10:34:53,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 143 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:53,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:34:53,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 177 [2024-02-05 10:34:53,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:34:57,466 INFO L124 PetriNetUnfolderBase]: 27477/41121 cut-off events. [2024-02-05 10:34:57,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:34:57,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77300 conditions, 41121 events. 27477/41121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343506 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77283. Up to 35720 conditions per place. [2024-02-05 10:34:57,777 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 84 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-02-05 10:34:57,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 142 transitions, 468 flow [2024-02-05 10:34:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:34:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:34:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2024-02-05 10:34:57,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310734463276836 [2024-02-05 10:34:57,779 INFO L175 Difference]: Start difference. First operand has 144 places, 143 transitions, 298 flow. Second operand 3 states and 282 transitions. [2024-02-05 10:34:57,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 142 transitions, 468 flow [2024-02-05 10:34:57,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:34:57,782 INFO L231 Difference]: Finished difference. Result has 143 places, 142 transitions, 296 flow [2024-02-05 10:34:57,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=143, PETRI_TRANSITIONS=142} [2024-02-05 10:34:57,783 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -32 predicate places. [2024-02-05 10:34:57,783 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 142 transitions, 296 flow [2024-02-05 10:34:57,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:57,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:34:57,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:34:57,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:34:57,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-02-05 10:34:57,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:34:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash 748190442, now seen corresponding path program 1 times [2024-02-05 10:34:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:34:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434978543] [2024-02-05 10:34:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:34:57,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:34:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:34:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:34:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:34:57,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434978543] [2024-02-05 10:34:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434978543] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:34:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:34:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:34:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908636127] [2024-02-05 10:34:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:34:57,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:34:57,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:34:57,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:34:57,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:34:57,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 177 [2024-02-05 10:34:57,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 142 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:34:57,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:34:57,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 177 [2024-02-05 10:34:57,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:35:02,072 INFO L124 PetriNetUnfolderBase]: 27477/41120 cut-off events. [2024-02-05 10:35:02,073 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:35:02,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77298 conditions, 41120 events. 27477/41120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343487 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77279. Up to 35718 conditions per place. [2024-02-05 10:35:02,389 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 83 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-02-05 10:35:02,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 141 transitions, 464 flow [2024-02-05 10:35:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:35:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:35:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-02-05 10:35:02,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348399246704332 [2024-02-05 10:35:02,391 INFO L175 Difference]: Start difference. First operand has 143 places, 142 transitions, 296 flow. Second operand 3 states and 284 transitions. [2024-02-05 10:35:02,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 141 transitions, 464 flow [2024-02-05 10:35:02,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 141 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:35:02,393 INFO L231 Difference]: Finished difference. Result has 142 places, 141 transitions, 294 flow [2024-02-05 10:35:02,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=142, PETRI_TRANSITIONS=141} [2024-02-05 10:35:02,394 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -33 predicate places. [2024-02-05 10:35:02,394 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 141 transitions, 294 flow [2024-02-05 10:35:02,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:35:02,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:35:02,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:35:02,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:35:02,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-02-05 10:35:02,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:35:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1719068384, now seen corresponding path program 1 times [2024-02-05 10:35:02,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:35:02,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758270810] [2024-02-05 10:35:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:35:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:35:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:35:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:35:02,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:35:02,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758270810] [2024-02-05 10:35:02,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758270810] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:35:02,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:35:02,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:35:02,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81907937] [2024-02-05 10:35:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:35:02,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:35:02,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:35:02,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:35:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:35:02,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 177 [2024-02-05 10:35:02,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 141 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:35:02,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:35:02,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 177 [2024-02-05 10:35:02,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand