./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-mult.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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-more-buffer-mult.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-mult.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-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:28:02,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:28:02,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:28:02,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:28:02,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:28:02,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:28:02,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:28:02,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:28:02,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:28:02,830 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:28:02,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:28:02,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:28:02,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:28:02,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:28:02,832 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:28:02,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:28:02,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:28:02,832 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:28:02,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:28:02,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:28:02,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:28:02,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:28:02,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:28:02,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:28:02,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:28:02,834 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:28:02,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:28:02,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:28:02,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:28:02,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:28:02,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:28:02,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:28:02,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:28:02,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:28:02,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:28:02,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:28:02,837 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:28:02,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:28:02,837 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:28:02,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:28:02,838 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:28:02,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:28:02,848 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:28:02,848 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:28:03,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:28:03,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:28:03,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:28:03,148 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:28:03,149 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:28:03,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-mult.wvr.yml/witness.yml [2024-01-31 16:28:03,309 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:28:03,310 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:28:03,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-01-31 16:28:04,481 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:28:04,634 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:28:04,635 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-01-31 16:28:04,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7165d32b9/0b29057990f14dd6b18b6216a3a51cca/FLAG3285ca018 [2024-01-31 16:28:04,651 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7165d32b9/0b29057990f14dd6b18b6216a3a51cca [2024-01-31 16:28:04,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:28:04,652 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:28:04,653 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:28:04,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:28:04,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:28:04,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:28:03" (1/2) ... [2024-01-31 16:28:04,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d420ed5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:28:04, skipping insertion in model container [2024-01-31 16:28:04,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:28:03" (1/2) ... [2024-01-31 16:28:04,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@564b217d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:28:04, skipping insertion in model container [2024-01-31 16:28:04,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:28:04" (2/2) ... [2024-01-31 16:28:04,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d420ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:04, skipping insertion in model container [2024-01-31 16:28:04,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:28:04" (2/2) ... [2024-01-31 16:28:04,660 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:28:04,722 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:28:04,724 INFO L98 nessWitnessExtractor]: Location invariant after [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,724 INFO L98 nessWitnessExtractor]: Location invariant before [L101-L101] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,724 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,724 INFO L98 nessWitnessExtractor]: Location invariant before [L163-L163] (((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && (size != 0)) && ((((((((((8 <= i && 9 <= size) && i <= 2147483646) || (8 <= size && i == 7)) || (7 <= size && i == 6)) || (6 <= size && i == 5)) || (5 <= size && i == 4)) || (4 <= size && i == 3)) || (3 <= size && i == 2)) || (2 <= size && i == 1)) || ((1 <= size && 0 == i) && i == 0)) [2024-01-31 16:28:04,724 INFO L98 nessWitnessExtractor]: Location invariant before [L113-L113] ((((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && (q2_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,725 INFO L98 nessWitnessExtractor]: Location invariant before [L128-L128] ((((((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (N == 0)) && (C == 0)) && (total == 0) [2024-01-31 16:28:04,725 INFO L98 nessWitnessExtractor]: Location invariant before [L108-L108] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,725 INFO L98 nessWitnessExtractor]: Location invariant before [L99-L99] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,725 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,726 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,726 INFO L98 nessWitnessExtractor]: Location invariant before [L122-L122] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,726 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (((0 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,726 INFO L98 nessWitnessExtractor]: Location invariant before [L114-L114] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,726 INFO L98 nessWitnessExtractor]: Location invariant before [L133-L133] (((((((q1 == 0) && (q2 == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,726 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= j) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,726 INFO L98 nessWitnessExtractor]: Location invariant before [L161-L161] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,726 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,727 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,727 INFO L98 nessWitnessExtractor]: Location invariant before [L83-L83] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,727 INFO L98 nessWitnessExtractor]: Location invariant before [L130-L130] ((((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (total == 0) [2024-01-31 16:28:04,727 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,728 INFO L98 nessWitnessExtractor]: Location invariant before [L96-L96] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,728 INFO L98 nessWitnessExtractor]: Location invariant after [L109-L109] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,728 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,728 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,728 INFO L98 nessWitnessExtractor]: Location invariant before [L129-L129] (((((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (N == 0)) && (total == 0) [2024-01-31 16:28:04,728 INFO L98 nessWitnessExtractor]: Location invariant before [L137-L137] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,728 INFO L98 nessWitnessExtractor]: Location invariant before [L142-L142] ((i == 0) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,729 INFO L98 nessWitnessExtractor]: Location invariant before [L139-L139] (((-2147483647 <= C) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,729 INFO L98 nessWitnessExtractor]: Location invariant before [L169-L169] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-01-31 16:28:04,729 INFO L98 nessWitnessExtractor]: Location invariant before [L109-L109] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,729 INFO L98 nessWitnessExtractor]: Location invariant before [L65-L65] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,729 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,729 INFO L98 nessWitnessExtractor]: Location invariant before [L80-L80] ((0 <= i) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,729 INFO L98 nessWitnessExtractor]: Location invariant before [L134-L134] ((((((q1 == 0) && (q2 == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,729 INFO L98 nessWitnessExtractor]: Location invariant before [L97-L97] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,730 INFO L98 nessWitnessExtractor]: Loop invariant at [L51-L51] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,730 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,731 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,731 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,732 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,732 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,732 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,732 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,732 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,732 INFO L98 nessWitnessExtractor]: Location invariant before [L131-L131] (((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n2 == 0)) && (total == 0) [2024-01-31 16:28:04,733 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,733 INFO L98 nessWitnessExtractor]: Location invariant before [L104-L104] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,733 INFO L98 nessWitnessExtractor]: Location invariant before [L100-L100] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,733 INFO L98 nessWitnessExtractor]: Location invariant before [L117-L117] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,733 INFO L98 nessWitnessExtractor]: Loop invariant at [L72-L72] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,733 INFO L98 nessWitnessExtractor]: Location invariant before [L136-L136] ((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,733 INFO L98 nessWitnessExtractor]: Location invariant after [L91-L91] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,734 INFO L98 nessWitnessExtractor]: Location invariant before [L158-L158] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,734 INFO L98 nessWitnessExtractor]: Location invariant before [L135-L135] (((((q1 == 0) && (q2 == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,734 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,734 INFO L98 nessWitnessExtractor]: Location invariant before [L112-L112] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,734 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,734 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,734 INFO L98 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,735 INFO L98 nessWitnessExtractor]: Location invariant before [L116-L116] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,735 INFO L98 nessWitnessExtractor]: Location invariant before [L159-L159] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,735 INFO L98 nessWitnessExtractor]: Location invariant before [L110-L110] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,735 INFO L98 nessWitnessExtractor]: Location invariant before [L165-L165] ((((0 <= i) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,735 INFO L98 nessWitnessExtractor]: Location invariant before [L118-L118] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,735 INFO L98 nessWitnessExtractor]: Location invariant before [L115-L115] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,735 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,735 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,735 INFO L98 nessWitnessExtractor]: Location invariant before [L171-L171] (0 <= i) && (0 <= j) [2024-01-31 16:28:04,736 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,736 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,736 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,736 INFO L98 nessWitnessExtractor]: Location invariant before [L119-L119] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,736 INFO L98 nessWitnessExtractor]: Loop invariant at [L111-L111] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,736 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,736 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,737 INFO L98 nessWitnessExtractor]: Loop invariant at [L93-L93] (unsigned long )_argptr == 0UL [2024-01-31 16:28:04,737 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,737 INFO L98 nessWitnessExtractor]: Loop invariant at [L162-L162] ((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && ((size != 0 && ((((((((8 <= size && 8 <= i) || (7 <= size && i == 7)) || (6 <= size && i == 6)) || (5 <= size && i == 5)) || (4 <= size && i == 4)) || (3 <= size && i == 3)) || (2 <= size && i == 2)) || (1 <= size && i == 1))) || (0 == i && i == 0)) [2024-01-31 16:28:04,737 INFO L98 nessWitnessExtractor]: Location invariant before [L132-L132] ((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:04,737 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] ((((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && (q1_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,737 INFO L98 nessWitnessExtractor]: Location invariant after [L70-L70] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:04,737 INFO L98 nessWitnessExtractor]: Location invariant before [L170-L170] (((0 <= i) && (0 <= j)) && (1 <= b)) && (b != 0) [2024-01-31 16:28:04,755 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:28:04,918 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-more-buffer-mult.wvr.c[4270,4283] [2024-01-31 16:28:04,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:28:04,948 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:28:04,986 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:28:04,990 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 Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:28:05,013 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:28:05,013 WARN L424 MainDispatcher]: Unable to annotate cond = j < 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 Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:28:05,022 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:28:05,022 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 [2024-01-31 16:28:05,047 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:28:05,047 WARN L424 MainDispatcher]: Unable to annotate cond = j < N || 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 [2024-01-31 16:28:05,068 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-more-buffer-mult.wvr.c[4270,4283] Start Parsing Local Start Parsing Local [2024-01-31 16:28:05,071 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 [2024-01-31 16:28:05,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:28:05,089 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:28:05,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05 WrapperNode [2024-01-31 16:28:05,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:28:05,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:28:05,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:28:05,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:28:05,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,166 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 402 [2024-01-31 16:28:05,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:28:05,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:28:05,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:28:05,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:28:05,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,185 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,206 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 6, 2, 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, 2, 1, 1, 1, 1]. [2024-01-31 16:28:05,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:28:05,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:28:05,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:28:05,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:28:05,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:28:05,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:28:05,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:28:05,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:28:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:28:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:28:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:28:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:28:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:28:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:28:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:28:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:28:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:28:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:28:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:28:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:28:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:28:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:28:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:28:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:28:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:28:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:28:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:28:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:28:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:28:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:28:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:28:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:28:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:28:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:28:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:28:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:28:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:28:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:28:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:28:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:28:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:28:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:28:05,365 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:28:05,475 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:28:05,477 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:28:06,022 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:28:06,022 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:28:06,322 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:28:06,322 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:28:06,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:28:06 BoogieIcfgContainer [2024-01-31 16:28:06,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:28:06,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:28:06,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:28:06,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:28:06,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:28:03" (1/4) ... [2024-01-31 16:28:06,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f3fdd8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:28:06, skipping insertion in model container [2024-01-31 16:28:06,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:28:04" (2/4) ... [2024-01-31 16:28:06,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f3fdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:28:06, skipping insertion in model container [2024-01-31 16:28:06,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (3/4) ... [2024-01-31 16:28:06,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f3fdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:28:06, skipping insertion in model container [2024-01-31 16:28:06,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:28:06" (4/4) ... [2024-01-31 16:28:06,329 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-01-31 16:28:06,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:28:06,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2024-01-31 16:28:06,376 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:28:06,475 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 16:28:06,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 183 transitions, 394 flow [2024-01-31 16:28:06,574 INFO L124 PetriNetUnfolderBase]: 10/179 cut-off events. [2024-01-31 16:28:06,574 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:28:06,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 179 events. 10/179 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 637 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2024-01-31 16:28:06,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 183 transitions, 394 flow [2024-01-31 16:28:06,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 178 transitions, 380 flow [2024-01-31 16:28:06,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:28:06,607 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;@4a66978e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:28:06,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2024-01-31 16:28:06,609 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:28:06,610 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:28:06,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:06,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:06,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:28:06,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-01-31 16:28:06,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash 36738, now seen corresponding path program 1 times [2024-01-31 16:28:06,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:06,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906594117] [2024-01-31 16:28:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:06,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:06,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:06,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906594117] [2024-01-31 16:28:06,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906594117] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:06,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:06,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:06,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906048220] [2024-01-31 16:28:06,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:06,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:06,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:06,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:06,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:06,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 183 [2024-01-31 16:28:07,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 178 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:28:07,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:07,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 183 [2024-01-31 16:28:07,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:11,614 INFO L124 PetriNetUnfolderBase]: 31674/48589 cut-off events. [2024-01-31 16:28:11,614 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-01-31 16:28:11,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92371 conditions, 48589 events. 31674/48589 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 2779. Compared 430251 event pairs, 29520 based on Foata normal form. 4864/31521 useless extension candidates. Maximal degree in co-relation 84632. Up to 41962 conditions per place. [2024-01-31 16:28:11,993 INFO L140 encePairwiseOnDemand]: 156/183 looper letters, 86 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2024-01-31 16:28:11,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 143 transitions, 486 flow [2024-01-31 16:28:11,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:11,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2024-01-31 16:28:12,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5500910746812386 [2024-01-31 16:28:12,004 INFO L175 Difference]: Start difference. First operand has 181 places, 178 transitions, 380 flow. Second operand 3 states and 302 transitions. [2024-01-31 16:28:12,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 143 transitions, 486 flow [2024-01-31 16:28:12,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 143 transitions, 470 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:28:12,224 INFO L231 Difference]: Finished difference. Result has 146 places, 143 transitions, 298 flow [2024-01-31 16:28:12,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=144, 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=146, PETRI_TRANSITIONS=143} [2024-01-31 16:28:12,229 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -35 predicate places. [2024-01-31 16:28:12,229 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 143 transitions, 298 flow [2024-01-31 16:28:12,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:28:12,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:12,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:28:12,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:28:12,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-01-31 16:28:12,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1140130, now seen corresponding path program 1 times [2024-01-31 16:28:12,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:12,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191553695] [2024-01-31 16:28:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:12,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:12,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:12,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191553695] [2024-01-31 16:28:12,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191553695] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:12,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:12,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:12,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599640075] [2024-01-31 16:28:12,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:12,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:12,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:12,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:12,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 183 [2024-01-31 16:28:12,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 143 transitions, 298 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) [2024-01-31 16:28:12,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:12,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 183 [2024-01-31 16:28:12,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:16,195 INFO L124 PetriNetUnfolderBase]: 31674/48588 cut-off events. [2024-01-31 16:28:16,196 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:16,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91211 conditions, 48588 events. 31674/48588 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2779. Compared 430351 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91202. Up to 41959 conditions per place. [2024-01-31 16:28:16,489 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 84 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-01-31 16:28:16,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 142 transitions, 468 flow [2024-01-31 16:28:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2024-01-31 16:28:16,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136612021857924 [2024-01-31 16:28:16,492 INFO L175 Difference]: Start difference. First operand has 146 places, 143 transitions, 298 flow. Second operand 3 states and 282 transitions. [2024-01-31 16:28:16,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 142 transitions, 468 flow [2024-01-31 16:28:16,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 142 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:16,495 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 296 flow [2024-01-31 16:28:16,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=143, 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=145, PETRI_TRANSITIONS=142} [2024-01-31 16:28:16,496 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -36 predicate places. [2024-01-31 16:28:16,496 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 296 flow [2024-01-31 16:28:16,496 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) [2024-01-31 16:28:16,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:16,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:28:16,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:28:16,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-01-31 16:28:16,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:16,497 INFO L85 PathProgramCache]: Analyzing trace with hash 35345210, now seen corresponding path program 1 times [2024-01-31 16:28:16,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:16,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800922247] [2024-01-31 16:28:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:16,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:16,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:16,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800922247] [2024-01-31 16:28:16,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800922247] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:16,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:16,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:16,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727934695] [2024-01-31 16:28:16,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:16,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:16,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:16,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:16,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:16,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 183 [2024-01-31 16:28:16,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 296 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) [2024-01-31 16:28:16,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:16,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 183 [2024-01-31 16:28:16,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:20,227 INFO L124 PetriNetUnfolderBase]: 31674/48587 cut-off events. [2024-01-31 16:28:20,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:20,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91209 conditions, 48587 events. 31674/48587 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2779. Compared 430516 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91198. Up to 41957 conditions per place. [2024-01-31 16:28:20,506 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 83 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-01-31 16:28:20,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 141 transitions, 464 flow [2024-01-31 16:28:20,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-01-31 16:28:20,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517304189435337 [2024-01-31 16:28:20,516 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 296 flow. Second operand 3 states and 284 transitions. [2024-01-31 16:28:20,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 141 transitions, 464 flow [2024-01-31 16:28:20,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 141 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:20,522 INFO L231 Difference]: Finished difference. Result has 144 places, 141 transitions, 294 flow [2024-01-31 16:28:20,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=142, 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=144, PETRI_TRANSITIONS=141} [2024-01-31 16:28:20,523 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -37 predicate places. [2024-01-31 16:28:20,523 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 141 transitions, 294 flow [2024-01-31 16:28:20,524 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) [2024-01-31 16:28:20,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:20,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:28:20,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:28:20,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-01-31 16:28:20,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:20,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1095702675, now seen corresponding path program 1 times [2024-01-31 16:28:20,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:20,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918355003] [2024-01-31 16:28:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:20,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:20,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918355003] [2024-01-31 16:28:20,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918355003] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:20,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:20,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332953860] [2024-01-31 16:28:20,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:20,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:20,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 183 [2024-01-31 16:28:20,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 141 transitions, 294 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) [2024-01-31 16:28:20,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:20,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 183 [2024-01-31 16:28:20,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:24,070 INFO L124 PetriNetUnfolderBase]: 31674/48586 cut-off events. [2024-01-31 16:28:24,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:24,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91207 conditions, 48586 events. 31674/48586 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2789. Compared 430534 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91194. Up to 41955 conditions per place. [2024-01-31 16:28:24,482 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 82 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-01-31 16:28:24,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 140 transitions, 460 flow [2024-01-31 16:28:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2024-01-31 16:28:24,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209471766848816 [2024-01-31 16:28:24,484 INFO L175 Difference]: Start difference. First operand has 144 places, 141 transitions, 294 flow. Second operand 3 states and 286 transitions. [2024-01-31 16:28:24,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 140 transitions, 460 flow [2024-01-31 16:28:24,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 140 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:24,486 INFO L231 Difference]: Finished difference. Result has 143 places, 140 transitions, 292 flow [2024-01-31 16:28:24,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=143, PETRI_TRANSITIONS=140} [2024-01-31 16:28:24,487 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -38 predicate places. [2024-01-31 16:28:24,487 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 140 transitions, 292 flow [2024-01-31 16:28:24,487 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) [2024-01-31 16:28:24,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:24,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:28:24,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:28:24,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-01-31 16:28:24,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash -392954158, now seen corresponding path program 1 times [2024-01-31 16:28:24,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:24,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048322779] [2024-01-31 16:28:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:24,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:24,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048322779] [2024-01-31 16:28:24,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048322779] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:24,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:24,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:24,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772501214] [2024-01-31 16:28:24,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:24,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:24,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:24,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:24,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 183 [2024-01-31 16:28:24,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 140 transitions, 292 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) [2024-01-31 16:28:24,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:24,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 183 [2024-01-31 16:28:24,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:28,104 INFO L124 PetriNetUnfolderBase]: 31674/48585 cut-off events. [2024-01-31 16:28:28,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:28,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91205 conditions, 48585 events. 31674/48585 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2789. Compared 430400 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91190. Up to 41953 conditions per place. [2024-01-31 16:28:28,349 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 81 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-01-31 16:28:28,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 139 transitions, 456 flow [2024-01-31 16:28:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2024-01-31 16:28:28,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2024-01-31 16:28:28,351 INFO L175 Difference]: Start difference. First operand has 143 places, 140 transitions, 292 flow. Second operand 3 states and 288 transitions. [2024-01-31 16:28:28,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 139 transitions, 456 flow [2024-01-31 16:28:28,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:28,353 INFO L231 Difference]: Finished difference. Result has 142 places, 139 transitions, 290 flow [2024-01-31 16:28:28,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=142, PETRI_TRANSITIONS=139} [2024-01-31 16:28:28,354 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -39 predicate places. [2024-01-31 16:28:28,354 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 139 transitions, 290 flow [2024-01-31 16:28:28,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-01-31 16:28:28,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:28,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:28:28,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:28:28,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-01-31 16:28:28,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash 703324240, now seen corresponding path program 1 times [2024-01-31 16:28:28,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:28,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036496161] [2024-01-31 16:28:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:28,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036496161] [2024-01-31 16:28:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036496161] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:28,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:28,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:28,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143347898] [2024-01-31 16:28:28,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:28,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:28,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:28,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:28,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:28,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 183 [2024-01-31 16:28:28,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 139 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:28:28,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:28,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 183 [2024-01-31 16:28:28,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:31,800 INFO L124 PetriNetUnfolderBase]: 31674/48584 cut-off events. [2024-01-31 16:28:31,801 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:31,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91203 conditions, 48584 events. 31674/48584 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2789. Compared 430629 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91186. Up to 41951 conditions per place. [2024-01-31 16:28:32,187 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 80 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-01-31 16:28:32,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 452 flow [2024-01-31 16:28:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-01-31 16:28:32,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282331511839709 [2024-01-31 16:28:32,189 INFO L175 Difference]: Start difference. First operand has 142 places, 139 transitions, 290 flow. Second operand 3 states and 290 transitions. [2024-01-31 16:28:32,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 452 flow [2024-01-31 16:28:32,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:32,191 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 288 flow [2024-01-31 16:28:32,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-01-31 16:28:32,192 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -40 predicate places. [2024-01-31 16:28:32,192 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 288 flow [2024-01-31 16:28:32,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:28:32,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:32,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:28:32,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:28:32,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-01-31 16:28:32,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash 328216227, now seen corresponding path program 1 times [2024-01-31 16:28:32,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:32,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651576120] [2024-01-31 16:28:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:32,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:32,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651576120] [2024-01-31 16:28:32,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651576120] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:32,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:32,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950313554] [2024-01-31 16:28:32,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:32,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:32,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:32,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:32,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:32,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 183 [2024-01-31 16:28:32,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:28:32,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:32,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 183 [2024-01-31 16:28:32,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:35,084 INFO L124 PetriNetUnfolderBase]: 31674/48583 cut-off events. [2024-01-31 16:28:35,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:35,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91201 conditions, 48583 events. 31674/48583 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2788. Compared 430785 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91182. Up to 41949 conditions per place. [2024-01-31 16:28:35,383 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 79 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2024-01-31 16:28:35,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 137 transitions, 448 flow [2024-01-31 16:28:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2024-01-31 16:28:35,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318761384335154 [2024-01-31 16:28:35,385 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 288 flow. Second operand 3 states and 292 transitions. [2024-01-31 16:28:35,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 137 transitions, 448 flow [2024-01-31 16:28:35,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:35,387 INFO L231 Difference]: Finished difference. Result has 140 places, 137 transitions, 286 flow [2024-01-31 16:28:35,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=140, PETRI_TRANSITIONS=137} [2024-01-31 16:28:35,388 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -41 predicate places. [2024-01-31 16:28:35,388 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 137 transitions, 286 flow [2024-01-31 16:28:35,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:28:35,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:35,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:28:35,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:28:35,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-01-31 16:28:35,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1584769690, now seen corresponding path program 1 times [2024-01-31 16:28:35,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:35,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059825177] [2024-01-31 16:28:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:35,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:35,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:35,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059825177] [2024-01-31 16:28:35,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059825177] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:35,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:35,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:35,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104939706] [2024-01-31 16:28:35,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:35,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:35,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:35,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 183 [2024-01-31 16:28:35,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 137 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:28:35,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:35,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 183 [2024-01-31 16:28:35,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand