./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/mult-dist.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/mult-dist.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-dist.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-3d25acf-m [2024-01-30 14:23:48,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:23:48,287 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:23:48,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:23:48,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:23:48,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:23:48,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:23:48,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:23:48,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:23:48,326 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:23:48,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:23:48,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:23:48,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:23:48,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:23:48,328 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:23:48,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:23:48,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:23:48,329 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:23:48,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:23:48,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:23:48,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:23:48,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:23:48,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:23:48,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:23:48,331 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:23:48,331 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:23:48,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:23:48,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:23:48,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:23:48,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:23:48,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:23:48,333 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:23:48,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:23:48,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:23:48,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:23:48,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:23:48,334 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:23:48,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:23:48,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:23:48,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:23:48,335 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:23:48,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:23:48,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:23:48,335 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:23:48,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:23:48,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:23:48,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:23:48,550 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:23:48,551 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:23:48,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2024-01-30 14:23:49,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:23:49,817 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:23:49,818 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2024-01-30 14:23:49,827 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/193788888/5eb4294a00f74f6787ec9a14b12a9501/FLAGe6c7c68af [2024-01-30 14:23:49,842 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/193788888/5eb4294a00f74f6787ec9a14b12a9501 [2024-01-30 14:23:49,844 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:23:49,845 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:23:49,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-dist.wvr.yml/witness.yml [2024-01-30 14:23:49,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:23:49,913 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:23:49,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:23:49,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:23:49,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:23:49,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:23:49" (1/2) ... [2024-01-30 14:23:49,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c509c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:49, skipping insertion in model container [2024-01-30 14:23:49,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:23:49" (1/2) ... [2024-01-30 14:23:49,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ffe4d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:49, skipping insertion in model container [2024-01-30 14:23:49,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:23:49" (2/2) ... [2024-01-30 14:23:49,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c509c45 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:49, skipping insertion in model container [2024-01-30 14:23:49,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:23:49" (2/2) ... [2024-01-30 14:23:49,921 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:23:49,947 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:23:49,948 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-01-30 14:23:49,948 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((unsigned long )_argptr == 0UL) && (((((((((((((0U == i && i == 0U) || (12U <= i && i <= 4294967294U)) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) [2024-01-30 14:23:49,948 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] ((((((((((0LL - (long long )a) + (long long )b >= 0LL) && ((long long )a + (long long )b >= 0LL)) && ((0LL - (long long )a) - (long long )b >= 0LL)) && ((long long )a - (long long )b >= 0LL)) && (x_1 == 0U)) && (x_2 == 0U)) && (x_3 == 0U)) && (a == 0U)) && (b == 0U)) && (c == 0U) [2024-01-30 14:23:49,949 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] ((unsigned long )_argptr == 0UL) && ((((((((((((i == 2U || i == 1U) || (0U == i && i == 0U)) || (12U <= i && i <= 4294967294U)) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) [2024-01-30 14:23:49,949 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] (((x_1 == 0U) && (x_2 == 0U)) && (x_3 == 0U)) && (c == 0U) [2024-01-30 14:23:49,949 INFO L98 nessWitnessExtractor]: Loop invariant at [L49-L51] ((unsigned long )_argptr == 0UL) && (((((((((((((0U == i && i == 0U) || 12U <= i) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) [2024-01-30 14:23:49,949 INFO L98 nessWitnessExtractor]: Location invariant after [L41-L43] (((x_1 == 0U) && (x_2 == 0U)) && (x_3 == 0U)) && (c == 0U) [2024-01-30 14:23:49,949 INFO L98 nessWitnessExtractor]: Loop invariant at [L41-L43] ((unsigned long )_argptr == 0UL) && ((((((((((((12U <= i || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-01-30 14:23:49,949 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] ((x_1 == 0U) && (x_2 == 0U)) && (x_3 == 0U) [2024-01-30 14:23:49,950 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-30 14:23:49,950 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-01-30 14:23:49,950 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-01-30 14:23:49,950 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] ((((x_1 == 0U) && (x_2 == 0U)) && (x_3 == 0U)) && (b == 0U)) && (c == 0U) [2024-01-30 14:23:49,950 INFO L98 nessWitnessExtractor]: Loop invariant at [L57-L59] ((unsigned long )_argptr == 0UL) && ((((((((((((i == 3U || i == 2U) || i == 1U) || (0U == i && i == 0U)) || 12U <= i) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) [2024-01-30 14:23:49,965 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:23:50,101 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/mult-dist.wvr.c[2155,2168] [2024-01-30 14:23:50,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:23:50,111 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:23:50,210 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/mult-dist.wvr.c[2155,2168] [2024-01-30 14:23:50,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:23:50,221 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:23:50,222 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50 WrapperNode [2024-01-30 14:23:50,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:23:50,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:23:50,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:23:50,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:23:50,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,252 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2024-01-30 14:23:50,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:23:50,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:23:50,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:23:50,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:23:50,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,270 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,283 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-30 14:23:50,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:23:50,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:23:50,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:23:50,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:23:50,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (1/1) ... [2024-01-30 14:23:50,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:23:50,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:23:50,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-30 14:23:50,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-30 14:23:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:23:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:23:50,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:23:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:23:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:23:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-30 14:23:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-30 14:23:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:23:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:23:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:23:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:23:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:23:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:23:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:23:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:23:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:23:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:23:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:23:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:23:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:23:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:23:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:23:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:23:50,422 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:23:50,502 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:23:50,504 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:23:50,832 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:23:50,833 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:23:50,962 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:23:50,963 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-30 14:23:50,963 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:23:50 BoogieIcfgContainer [2024-01-30 14:23:50,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:23:50,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:23:50,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:23:50,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:23:50,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:23:49" (1/4) ... [2024-01-30 14:23:50,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7436fbda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:23:50, skipping insertion in model container [2024-01-30 14:23:50,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:23:49" (2/4) ... [2024-01-30 14:23:50,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7436fbda and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:23:50, skipping insertion in model container [2024-01-30 14:23:50,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:50" (3/4) ... [2024-01-30 14:23:50,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7436fbda and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:23:50, skipping insertion in model container [2024-01-30 14:23:50,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:23:50" (4/4) ... [2024-01-30 14:23:50,970 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2024-01-30 14:23:50,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:23:50,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-01-30 14:23:50,985 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:23:51,098 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-30 14:23:51,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 61 transitions, 143 flow [2024-01-30 14:23:51,180 INFO L124 PetriNetUnfolderBase]: 3/58 cut-off events. [2024-01-30 14:23:51,182 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-30 14:23:51,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 3/58 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 144 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-01-30 14:23:51,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 61 transitions, 143 flow [2024-01-30 14:23:51,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 57 transitions, 132 flow [2024-01-30 14:23:51,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:23:51,202 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;@41838a11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:23:51,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-01-30 14:23:51,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:23:51,205 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:23:51,205 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:23:51,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:51,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:23:51,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-30 14:23:51,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash 10028, now seen corresponding path program 1 times [2024-01-30 14:23:51,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:51,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205164412] [2024-01-30 14:23:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:51,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:51,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:51,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205164412] [2024-01-30 14:23:51,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205164412] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:51,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:51,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:23:51,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879963675] [2024-01-30 14:23:51,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:51,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:51,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:51,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-01-30 14:23:51,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:51,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:51,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-01-30 14:23:51,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:52,247 INFO L124 PetriNetUnfolderBase]: 1814/3038 cut-off events. [2024-01-30 14:23:52,247 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-01-30 14:23:52,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5633 conditions, 3038 events. 1814/3038 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 18398 event pairs, 1305 based on Foata normal form. 0/2244 useless extension candidates. Maximal degree in co-relation 5060. Up to 2447 conditions per place. [2024-01-30 14:23:52,270 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 34 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-01-30 14:23:52,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 202 flow [2024-01-30 14:23:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-01-30 14:23:52,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5792349726775956 [2024-01-30 14:23:52,283 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 132 flow. Second operand 3 states and 106 transitions. [2024-01-30 14:23:52,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 202 flow [2024-01-30 14:23:52,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 190 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:23:52,294 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 122 flow [2024-01-30 14:23:52,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-01-30 14:23:52,299 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -5 predicate places. [2024-01-30 14:23:52,299 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 122 flow [2024-01-30 14:23:52,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:52,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:52,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:23:52,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:23:52,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-30 14:23:52,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash 311172, now seen corresponding path program 1 times [2024-01-30 14:23:52,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:52,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867314362] [2024-01-30 14:23:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:52,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:52,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:52,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:52,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867314362] [2024-01-30 14:23:52,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867314362] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:52,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:52,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:23:52,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318056774] [2024-01-30 14:23:52,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:52,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:52,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-01-30 14:23:52,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:52,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:52,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-01-30 14:23:52,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:52,652 INFO L124 PetriNetUnfolderBase]: 1154/2115 cut-off events. [2024-01-30 14:23:52,652 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-01-30 14:23:52,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3785 conditions, 2115 events. 1154/2115 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13705 event pairs, 945 based on Foata normal form. 0/1725 useless extension candidates. Maximal degree in co-relation 3776. Up to 1621 conditions per place. [2024-01-30 14:23:52,669 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 31 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-01-30 14:23:52,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 186 flow [2024-01-30 14:23:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-01-30 14:23:52,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2024-01-30 14:23:52,672 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 122 flow. Second operand 3 states and 112 transitions. [2024-01-30 14:23:52,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 186 flow [2024-01-30 14:23:52,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:52,675 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 120 flow [2024-01-30 14:23:52,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-01-30 14:23:52,676 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2024-01-30 14:23:52,676 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 120 flow [2024-01-30 14:23:52,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:52,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:52,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:23:52,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:23:52,677 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-30 14:23:52,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:52,679 INFO L85 PathProgramCache]: Analyzing trace with hash 9646679, now seen corresponding path program 1 times [2024-01-30 14:23:52,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:52,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919997144] [2024-01-30 14:23:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:52,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:52,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:52,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919997144] [2024-01-30 14:23:52,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919997144] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:52,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:52,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:23:52,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285104380] [2024-01-30 14:23:52,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:52,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:52,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:52,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:52,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:52,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 61 [2024-01-30 14:23:52,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:52,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:52,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 61 [2024-01-30 14:23:52,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:52,965 INFO L124 PetriNetUnfolderBase]: 948/1785 cut-off events. [2024-01-30 14:23:52,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:23:52,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 1785 events. 948/1785 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11823 event pairs, 564 based on Foata normal form. 1/1582 useless extension candidates. Maximal degree in co-relation 3225. Up to 878 conditions per place. [2024-01-30 14:23:52,975 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 40 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2024-01-30 14:23:52,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 230 flow [2024-01-30 14:23:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-01-30 14:23:52,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6939890710382514 [2024-01-30 14:23:52,977 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 120 flow. Second operand 3 states and 127 transitions. [2024-01-30 14:23:52,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 230 flow [2024-01-30 14:23:52,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:52,979 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 113 flow [2024-01-30 14:23:52,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-01-30 14:23:52,980 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -9 predicate places. [2024-01-30 14:23:52,980 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 113 flow [2024-01-30 14:23:52,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:52,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:52,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:23:52,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:23:52,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-30 14:23:52,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash 299047394, now seen corresponding path program 1 times [2024-01-30 14:23:52,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:52,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136481996] [2024-01-30 14:23:52,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:52,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:53,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:53,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136481996] [2024-01-30 14:23:53,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136481996] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:53,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:53,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:23:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028429371] [2024-01-30 14:23:53,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:53,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:53,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 61 [2024-01-30 14:23:53,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:53,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:53,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 61 [2024-01-30 14:23:53,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:53,314 INFO L124 PetriNetUnfolderBase]: 1769/3465 cut-off events. [2024-01-30 14:23:53,314 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-01-30 14:23:53,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6078 conditions, 3465 events. 1769/3465 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 24609 event pairs, 473 based on Foata normal form. 0/3188 useless extension candidates. Maximal degree in co-relation 3279. Up to 1559 conditions per place. [2024-01-30 14:23:53,329 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 45 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-01-30 14:23:53,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 261 flow [2024-01-30 14:23:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-01-30 14:23:53,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7540983606557377 [2024-01-30 14:23:53,331 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 113 flow. Second operand 3 states and 138 transitions. [2024-01-30 14:23:53,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 261 flow [2024-01-30 14:23:53,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:53,334 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 141 flow [2024-01-30 14:23:53,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2024-01-30 14:23:53,334 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -9 predicate places. [2024-01-30 14:23:53,334 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 141 flow [2024-01-30 14:23:53,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:53,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:53,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:23:53,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:23:53,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-30 14:23:53,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:53,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1159127749, now seen corresponding path program 1 times [2024-01-30 14:23:53,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:53,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742510274] [2024-01-30 14:23:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:53,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:53,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:53,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742510274] [2024-01-30 14:23:53,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742510274] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:53,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:53,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:23:53,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363642217] [2024-01-30 14:23:53,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:53,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:23:53,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:53,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:23:53,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:23:53,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 61 [2024-01-30 14:23:53,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:53,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:53,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 61 [2024-01-30 14:23:53,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:53,690 INFO L124 PetriNetUnfolderBase]: 1608/2877 cut-off events. [2024-01-30 14:23:53,691 INFO L125 PetriNetUnfolderBase]: For 1009/1019 co-relation queries the response was YES. [2024-01-30 14:23:53,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6034 conditions, 2877 events. 1608/2877 cut-off events. For 1009/1019 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18313 event pairs, 496 based on Foata normal form. 152/2889 useless extension candidates. Maximal degree in co-relation 1480. Up to 1990 conditions per place. [2024-01-30 14:23:53,705 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 43 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-01-30 14:23:53,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 269 flow [2024-01-30 14:23:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:23:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:23:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-01-30 14:23:53,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352459016393442 [2024-01-30 14:23:53,707 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 141 flow. Second operand 4 states and 155 transitions. [2024-01-30 14:23:53,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 269 flow [2024-01-30 14:23:53,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:53,709 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 129 flow [2024-01-30 14:23:53,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-01-30 14:23:53,710 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2024-01-30 14:23:53,710 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 129 flow [2024-01-30 14:23:53,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:53,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:53,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:23:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:23:53,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-30 14:23:53,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1523732253, now seen corresponding path program 1 times [2024-01-30 14:23:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:53,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717299507] [2024-01-30 14:23:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:53,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:53,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717299507] [2024-01-30 14:23:53,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717299507] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:53,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:53,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:23:53,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731621561] [2024-01-30 14:23:53,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:53,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:23:53,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:53,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:23:53,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:23:53,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 61 [2024-01-30 14:23:53,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:53,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:53,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 61 [2024-01-30 14:23:53,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:54,113 INFO L124 PetriNetUnfolderBase]: 1470/2757 cut-off events. [2024-01-30 14:23:54,114 INFO L125 PetriNetUnfolderBase]: For 581/583 co-relation queries the response was YES. [2024-01-30 14:23:54,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5508 conditions, 2757 events. 1470/2757 cut-off events. For 581/583 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18338 event pairs, 222 based on Foata normal form. 210/2861 useless extension candidates. Maximal degree in co-relation 4569. Up to 1798 conditions per place. [2024-01-30 14:23:54,132 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 48 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-01-30 14:23:54,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 281 flow [2024-01-30 14:23:54,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:23:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:23:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-01-30 14:23:54,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6516393442622951 [2024-01-30 14:23:54,133 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 129 flow. Second operand 4 states and 159 transitions. [2024-01-30 14:23:54,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 281 flow [2024-01-30 14:23:54,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:54,135 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 124 flow [2024-01-30 14:23:54,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-01-30 14:23:54,137 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -13 predicate places. [2024-01-30 14:23:54,137 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 124 flow [2024-01-30 14:23:54,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:54,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:54,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:23:54,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:23:54,138 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-30 14:23:54,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1525248392, now seen corresponding path program 1 times [2024-01-30 14:23:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:54,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934173288] [2024-01-30 14:23:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:54,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:54,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:54,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934173288] [2024-01-30 14:23:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934173288] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:54,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:54,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:23:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905812756] [2024-01-30 14:23:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:54,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:23:54,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:54,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:23:54,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:23:54,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2024-01-30 14:23:54,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:54,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:54,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2024-01-30 14:23:54,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:54,602 INFO L124 PetriNetUnfolderBase]: 2066/3447 cut-off events. [2024-01-30 14:23:54,602 INFO L125 PetriNetUnfolderBase]: For 664/668 co-relation queries the response was YES. [2024-01-30 14:23:54,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7355 conditions, 3447 events. 2066/3447 cut-off events. For 664/668 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 21317 event pairs, 373 based on Foata normal form. 106/3322 useless extension candidates. Maximal degree in co-relation 6438. Up to 1956 conditions per place. [2024-01-30 14:23:54,617 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 59 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-01-30 14:23:54,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 336 flow [2024-01-30 14:23:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:23:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:23:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-01-30 14:23:54,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6270491803278688 [2024-01-30 14:23:54,619 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 124 flow. Second operand 4 states and 153 transitions. [2024-01-30 14:23:54,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 336 flow [2024-01-30 14:23:54,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:54,620 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 127 flow [2024-01-30 14:23:54,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-01-30 14:23:54,621 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -13 predicate places. [2024-01-30 14:23:54,621 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 127 flow [2024-01-30 14:23:54,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:54,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:54,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:23:54,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:23:54,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-30 14:23:54,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1525248425, now seen corresponding path program 1 times [2024-01-30 14:23:54,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:54,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848255817] [2024-01-30 14:23:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:54,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:23:54,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-30 14:23:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:23:54,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-30 14:23:54,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-30 14:23:54,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 34 remaining) [2024-01-30 14:23:54,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 34 remaining) [2024-01-30 14:23:54,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 34 remaining) [2024-01-30 14:23:54,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 34 remaining) [2024-01-30 14:23:54,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 34 remaining) [2024-01-30 14:23:54,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 34 remaining) [2024-01-30 14:23:54,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 34 remaining) [2024-01-30 14:23:54,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 34 remaining) [2024-01-30 14:23:54,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 34 remaining) [2024-01-30 14:23:54,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 34 remaining) [2024-01-30 14:23:54,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 34 remaining) [2024-01-30 14:23:54,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 34 remaining) [2024-01-30 14:23:54,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 34 remaining) [2024-01-30 14:23:54,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 34 remaining) [2024-01-30 14:23:54,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 34 remaining) [2024-01-30 14:23:54,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 34 remaining) [2024-01-30 14:23:54,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 34 remaining) [2024-01-30 14:23:54,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 34 remaining) [2024-01-30 14:23:54,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (15 of 34 remaining) [2024-01-30 14:23:54,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 34 remaining) [2024-01-30 14:23:54,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 34 remaining) [2024-01-30 14:23:54,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 34 remaining) [2024-01-30 14:23:54,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 34 remaining) [2024-01-30 14:23:54,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 34 remaining) [2024-01-30 14:23:54,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 34 remaining) [2024-01-30 14:23:54,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 34 remaining) [2024-01-30 14:23:54,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 34 remaining) [2024-01-30 14:23:54,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 34 remaining) [2024-01-30 14:23:54,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 34 remaining) [2024-01-30 14:23:54,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 34 remaining) [2024-01-30 14:23:54,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 34 remaining) [2024-01-30 14:23:54,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 34 remaining) [2024-01-30 14:23:54,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 34 remaining) [2024-01-30 14:23:54,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 34 remaining) [2024-01-30 14:23:54,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:23:54,661 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:23:54,666 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:23:54,666 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:23:54,677 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-01-30 14:23:54,682 INFO L503 ceAbstractionStarter]: Automizer considered 17 witness invariants [2024-01-30 14:23:54,683 INFO L504 ceAbstractionStarter]: WitnessConsidered=17 [2024-01-30 14:23:54,683 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:23:54 BasicIcfg [2024-01-30 14:23:54,683 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:23:54,684 INFO L158 Benchmark]: Toolchain (without parser) took 4770.97ms. Allocated memory was 159.4MB in the beginning and 402.7MB in the end (delta: 243.3MB). Free memory was 81.3MB in the beginning and 201.1MB in the end (delta: -119.7MB). Peak memory consumption was 124.9MB. Max. memory is 16.1GB. [2024-01-30 14:23:54,684 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:23:54,684 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:23:54,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.71ms. Allocated memory was 159.4MB in the beginning and 224.4MB in the end (delta: 65.0MB). Free memory was 81.0MB in the beginning and 193.7MB in the end (delta: -112.7MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2024-01-30 14:23:54,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.03ms. Allocated memory is still 224.4MB. Free memory was 193.7MB in the beginning and 191.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:23:54,685 INFO L158 Benchmark]: Boogie Preprocessor took 44.60ms. Allocated memory is still 224.4MB. Free memory was 191.6MB in the beginning and 189.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:23:54,685 INFO L158 Benchmark]: RCFGBuilder took 664.85ms. Allocated memory is still 224.4MB. Free memory was 189.5MB in the beginning and 141.3MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-01-30 14:23:54,685 INFO L158 Benchmark]: TraceAbstraction took 3718.48ms. Allocated memory was 224.4MB in the beginning and 402.7MB in the end (delta: 178.3MB). Free memory was 140.2MB in the beginning and 201.1MB in the end (delta: -60.9MB). Peak memory consumption was 117.4MB. Max. memory is 16.1GB. [2024-01-30 14:23:54,686 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.71ms. Allocated memory was 159.4MB in the beginning and 224.4MB in the end (delta: 65.0MB). Free memory was 81.0MB in the beginning and 193.7MB in the end (delta: -112.7MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.03ms. Allocated memory is still 224.4MB. Free memory was 193.7MB in the beginning and 191.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.60ms. Allocated memory is still 224.4MB. Free memory was 191.6MB in the beginning and 189.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 664.85ms. Allocated memory is still 224.4MB. Free memory was 189.5MB in the beginning and 141.3MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3718.48ms. Allocated memory was 224.4MB in the beginning and 402.7MB in the end (delta: 178.3MB). Free memory was 140.2MB in the beginning and 201.1MB in the end (delta: -60.9MB). Peak memory consumption was 117.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 41]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 unsigned int x_1, x_2, x_3, a, b, c; [L65] 0 pthread_t t1, t2, t3; VAL [a=0, b=0, c=0, t1={6:0}, t2={5:0}, t3={3:0}, x_1=0, x_2=0, x_3=0] [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]],BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,CastExpression[ACSLType[long long],IdentifierExpression[a]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]],BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]],BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,CastExpression[ACSLType[long long],IdentifierExpression[a]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]],BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[x_3],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[a],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[c],IntegerLiteral[0U]]]]] [L68] 0 a = __VERIFIER_nondet_uint() [L69] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[x_3],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[c],IntegerLiteral[0U]]]]] [L69] 0 b = __VERIFIER_nondet_uint() [L70] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[x_3],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[c],IntegerLiteral[0U]]]]] [L70] 0 c = __VERIFIER_nondet_uint() [L72] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[x_3],IntegerLiteral[0U]]]]] [L72] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [_argptr={0:0}, t1={6:0}, t2={5:0}, t3={3:0}, x_1=0, x_2=0, x_3=0] [L41] 1 unsigned int i=0; VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0, x_3=0] [L41] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPLEQ,IntegerLiteral[12U],IdentifierExpression[i]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[11U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[10U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[9U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[8U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[7U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[6U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[5U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[4U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[3U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[2U]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[1U]]],BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IntegerLiteral[0U],IdentifierExpression[i]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[0U]]]]]]] VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0, x_3=0] [L41] COND FALSE 1 !(i