./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/mult-comm.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-comm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27552612 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-comm.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mult-comm.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-2755261-m [2024-01-26 15:20:42,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-26 15:20:42,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-26 15:20:42,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-26 15:20:42,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-26 15:20:42,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-26 15:20:42,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-26 15:20:42,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-26 15:20:42,498 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-26 15:20:42,498 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-26 15:20:42,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-26 15:20:42,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-26 15:20:42,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-26 15:20:42,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-26 15:20:42,500 INFO L153 SettingsManager]: * Use SBE=true [2024-01-26 15:20:42,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-26 15:20:42,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-26 15:20:42,501 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-26 15:20:42,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-26 15:20:42,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-26 15:20:42,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-26 15:20:42,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-26 15:20:42,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-26 15:20:42,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-26 15:20:42,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-26 15:20:42,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-26 15:20:42,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-26 15:20:42,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-26 15:20:42,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-26 15:20:42,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-26 15:20:42,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-26 15:20:42,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-26 15:20:42,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-26 15:20:42,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-26 15:20:42,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-26 15:20:42,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-26 15:20:42,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-26 15:20:42,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-26 15:20:42,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-26 15:20:42,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-26 15:20:42,511 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-26 15:20:42,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-26 15:20:42,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-26 15:20:42,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-26 15:20:42,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-26 15:20:42,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-26 15:20:42,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-26 15:20:42,796 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-26 15:20:42,797 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-26 15:20:42,798 INFO L431 ainManager$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-comm.wvr.yml/witness.yml [2024-01-26 15:20:42,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-26 15:20:42,879 INFO L274 PluginConnector]: CDTParser initialized [2024-01-26 15:20:42,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c [2024-01-26 15:20:43,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-26 15:20:44,090 INFO L384 CDTParser]: Found 1 translation units. [2024-01-26 15:20:44,091 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c [2024-01-26 15:20:44,097 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e99f15a79/8fb974c7404443c3873954492e52432f/FLAG856b02c45 [2024-01-26 15:20:44,108 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e99f15a79/8fb974c7404443c3873954492e52432f [2024-01-26 15:20:44,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-26 15:20:44,109 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-26 15:20:44,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-26 15:20:44,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-26 15:20:44,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-26 15:20:44,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:20:42" (1/2) ... [2024-01-26 15:20:44,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aada698 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:20:44, skipping insertion in model container [2024-01-26 15:20:44,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:20:42" (1/2) ... [2024-01-26 15:20:44,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56f97fe6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:20:44, skipping insertion in model container [2024-01-26 15:20:44,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:20:44" (2/2) ... [2024-01-26 15:20:44,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aada698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44, skipping insertion in model container [2024-01-26 15:20:44,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:20:44" (2/2) ... [2024-01-26 15:20:44,123 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-26 15:20:44,140 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-26 15:20:44,141 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-26 15:20:44,142 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] ((((((((((((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 [2024-01-26 15:20:44,142 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-26 15:20:44,142 INFO L98 nessWitnessExtractor]: Loop invariant at [L50-L52] (unsigned long )_argptr == 0UL [2024-01-26 15:20:44,142 INFO L98 nessWitnessExtractor]: Loop invariant at [L50-L52] ((((((((((((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 [2024-01-26 15:20:44,142 INFO L98 nessWitnessExtractor]: Loop invariant at [L42-L44] (unsigned long )_argptr == 0UL [2024-01-26 15:20:44,143 INFO L98 nessWitnessExtractor]: Loop invariant at [L42-L44] (((((((((((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) [2024-01-26 15:20:44,143 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] b == 0U [2024-01-26 15:20:44,144 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] x_2 == 0U [2024-01-26 15:20:44,144 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] x_1 == 0U [2024-01-26 15:20:44,145 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (0LL - (long long )a) + (long long )b >= 0LL [2024-01-26 15:20:44,146 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] a == 0U [2024-01-26 15:20:44,146 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] x_2 == 0U [2024-01-26 15:20:44,146 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (long long )a - (long long )b >= 0LL [2024-01-26 15:20:44,146 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (long long )a + (long long )b >= 0LL [2024-01-26 15:20:44,146 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] b == 0U [2024-01-26 15:20:44,146 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] x_1 == 0U [2024-01-26 15:20:44,146 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (0LL - (long long )a) - (long long )b >= 0LL [2024-01-26 15:20:44,147 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-01-26 15:20:44,147 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] x_1 == 0U [2024-01-26 15:20:44,147 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] x_2 == 0U [2024-01-26 15:20:44,147 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] x_1 == 0U [2024-01-26 15:20:44,147 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] b == 0U [2024-01-26 15:20:44,147 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-26 15:20:44,147 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] ((((((((((((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) [2024-01-26 15:20:44,147 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] x_2 == 0U [2024-01-26 15:20:44,163 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-26 15:20:44,317 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-comm.wvr.c[1936,1949] [2024-01-26 15:20:44,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 15:20:44,327 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 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 [2024-01-26 15:20:44,376 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-comm.wvr.c[1936,1949] [2024-01-26 15:20:44,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 15:20:44,388 INFO L206 MainTranslator]: Completed translation [2024-01-26 15:20:44,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44 WrapperNode [2024-01-26 15:20:44,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-26 15:20:44,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-26 15:20:44,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-26 15:20:44,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-26 15:20:44,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,415 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-01-26 15:20:44,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-26 15:20:44,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-26 15:20:44,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-26 15:20:44,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-26 15:20:44,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,454 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-26 15:20:44,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-26 15:20:44,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-26 15:20:44,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-26 15:20:44,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-26 15:20:44,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (1/1) ... [2024-01-26 15:20:44,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-26 15:20:44,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-26 15:20:44,510 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) [2024-01-26 15:20:44,527 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 [2024-01-26 15:20:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-26 15:20:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-26 15:20:44,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-26 15:20:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-26 15:20:44,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-26 15:20:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-26 15:20:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-26 15:20:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-26 15:20:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-26 15:20:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-26 15:20:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-26 15:20:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-26 15:20:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-26 15:20:44,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-26 15:20:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-26 15:20:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-26 15:20:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-26 15:20:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-26 15:20:44,551 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-26 15:20:44,646 INFO L244 CfgBuilder]: Building ICFG [2024-01-26 15:20:44,648 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-26 15:20:44,892 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-26 15:20:44,893 INFO L293 CfgBuilder]: Performing block encoding [2024-01-26 15:20:44,968 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-26 15:20:44,969 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-26 15:20:44,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:20:44 BoogieIcfgContainer [2024-01-26 15:20:44,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-26 15:20:44,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-26 15:20:44,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-26 15:20:44,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-26 15:20:44,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:20:42" (1/4) ... [2024-01-26 15:20:44,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9823c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 26.01 03:20:44, skipping insertion in model container [2024-01-26 15:20:44,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 03:20:44" (2/4) ... [2024-01-26 15:20:44,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9823c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 03:20:44, skipping insertion in model container [2024-01-26 15:20:44,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:44" (3/4) ... [2024-01-26 15:20:44,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9823c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 03:20:44, skipping insertion in model container [2024-01-26 15:20:44,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:20:44" (4/4) ... [2024-01-26 15:20:44,976 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-01-26 15:20:44,990 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-26 15:20:44,990 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-01-26 15:20:44,990 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-26 15:20:45,102 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-26 15:20:45,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 172 flow [2024-01-26 15:20:45,179 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2024-01-26 15:20:45,179 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-26 15:20:45,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 2/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-01-26 15:20:45,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 172 flow [2024-01-26 15:20:45,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 76 transitions, 164 flow [2024-01-26 15:20:45,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-26 15:20:45,208 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;@736851e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 15:20:45,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-01-26 15:20:45,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-26 15:20:45,211 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-26 15:20:45,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:20:45,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:20:45,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-26 15:20:45,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-26 15:20:45,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:20:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash 9323, now seen corresponding path program 1 times [2024-01-26 15:20:45,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:20:45,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813610998] [2024-01-26 15:20:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:20:45,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:20:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:20:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:20:45,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:20:45,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813610998] [2024-01-26 15:20:45,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813610998] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:20:45,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:20:45,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-26 15:20:45,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297934439] [2024-01-26 15:20:45,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:20:45,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:20:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:20:45,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:20:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:20:45,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 79 [2024-01-26 15:20:45,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2024-01-26 15:20:45,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:20:45,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 79 [2024-01-26 15:20:45,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:20:45,645 INFO L124 PetriNetUnfolderBase]: 137/407 cut-off events. [2024-01-26 15:20:45,645 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-01-26 15:20:45,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 407 events. 137/407 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2366 event pairs, 123 based on Foata normal form. 61/371 useless extension candidates. Maximal degree in co-relation 584. Up to 240 conditions per place. [2024-01-26 15:20:45,652 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 22 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-01-26 15:20:45,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 192 flow [2024-01-26 15:20:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:20:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:20:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-01-26 15:20:45,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.70042194092827 [2024-01-26 15:20:45,664 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 164 flow. Second operand 3 states and 166 transitions. [2024-01-26 15:20:45,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 192 flow [2024-01-26 15:20:45,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-26 15:20:45,673 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 140 flow [2024-01-26 15:20:45,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-01-26 15:20:45,677 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -12 predicate places. [2024-01-26 15:20:45,677 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 140 flow [2024-01-26 15:20:45,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2024-01-26 15:20:45,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:20:45,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-26 15:20:45,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-26 15:20:45,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-26 15:20:45,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:20:45,678 INFO L85 PathProgramCache]: Analyzing trace with hash 289273, now seen corresponding path program 1 times [2024-01-26 15:20:45,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:20:45,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794739390] [2024-01-26 15:20:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:20:45,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:20:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:20:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:20:45,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:20:45,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794739390] [2024-01-26 15:20:45,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794739390] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:20:45,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:20:45,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-26 15:20:45,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93723832] [2024-01-26 15:20:45,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:20:45,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:20:45,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:20:45,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:20:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:20:45,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-26 15:20:45,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-01-26 15:20:45,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:20:45,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-26 15:20:45,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:20:45,823 INFO L124 PetriNetUnfolderBase]: 143/525 cut-off events. [2024-01-26 15:20:45,824 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-26 15:20:45,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 525 events. 143/525 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3081 event pairs, 57 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 783. Up to 141 conditions per place. [2024-01-26 15:20:45,826 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 33 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-01-26 15:20:45,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 77 transitions, 235 flow [2024-01-26 15:20:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:20:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:20:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-01-26 15:20:45,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7848101265822784 [2024-01-26 15:20:45,852 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 140 flow. Second operand 3 states and 186 transitions. [2024-01-26 15:20:45,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 77 transitions, 235 flow [2024-01-26 15:20:45,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 77 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:20:45,854 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 142 flow [2024-01-26 15:20:45,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-01-26 15:20:45,855 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -14 predicate places. [2024-01-26 15:20:45,855 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 142 flow [2024-01-26 15:20:45,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-01-26 15:20:45,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:20:45,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:20:45,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-26 15:20:45,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-26 15:20:45,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:20:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash 871144950, now seen corresponding path program 1 times [2024-01-26 15:20:45,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:20:45,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956646304] [2024-01-26 15:20:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:20:45,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:20:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:20:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:20:45,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:20:45,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956646304] [2024-01-26 15:20:45,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956646304] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:20:45,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:20:45,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-26 15:20:45,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631301778] [2024-01-26 15:20:45,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:20:45,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:20:45,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:20:45,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:20:45,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:20:45,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-26 15:20:45,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-01-26 15:20:45,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:20:45,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-26 15:20:45,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:20:45,981 INFO L124 PetriNetUnfolderBase]: 208/661 cut-off events. [2024-01-26 15:20:45,981 INFO L125 PetriNetUnfolderBase]: For 40/44 co-relation queries the response was YES. [2024-01-26 15:20:45,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 661 events. 208/661 cut-off events. For 40/44 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4007 event pairs, 95 based on Foata normal form. 15/566 useless extension candidates. Maximal degree in co-relation 552. Up to 191 conditions per place. [2024-01-26 15:20:45,985 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 33 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-01-26 15:20:45,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 239 flow [2024-01-26 15:20:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:20:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:20:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-01-26 15:20:45,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7763713080168776 [2024-01-26 15:20:45,987 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 142 flow. Second operand 3 states and 184 transitions. [2024-01-26 15:20:45,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 239 flow [2024-01-26 15:20:45,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-26 15:20:45,989 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 146 flow [2024-01-26 15:20:45,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-01-26 15:20:45,990 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -15 predicate places. [2024-01-26 15:20:45,990 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 146 flow [2024-01-26 15:20:45,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-01-26 15:20:45,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:20:45,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:20:45,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-26 15:20:45,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-26 15:20:45,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:20:45,991 INFO L85 PathProgramCache]: Analyzing trace with hash -57891566, now seen corresponding path program 1 times [2024-01-26 15:20:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:20:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930910623] [2024-01-26 15:20:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:20:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:20:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:20:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:20:46,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:20:46,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930910623] [2024-01-26 15:20:46,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930910623] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:20:46,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:20:46,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:20:46,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507312232] [2024-01-26 15:20:46,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:20:46,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:20:46,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:20:46,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:20:46,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:20:46,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2024-01-26 15:20:46,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2024-01-26 15:20:46,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:20:46,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2024-01-26 15:20:46,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:20:46,118 INFO L124 PetriNetUnfolderBase]: 245/703 cut-off events. [2024-01-26 15:20:46,118 INFO L125 PetriNetUnfolderBase]: For 52/54 co-relation queries the response was YES. [2024-01-26 15:20:46,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 703 events. 245/703 cut-off events. For 52/54 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4376 event pairs, 123 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 844. Up to 256 conditions per place. [2024-01-26 15:20:46,121 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 37 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-01-26 15:20:46,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 252 flow [2024-01-26 15:20:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:20:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:20:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-01-26 15:20:46,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7383966244725738 [2024-01-26 15:20:46,123 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 146 flow. Second operand 3 states and 175 transitions. [2024-01-26 15:20:46,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 252 flow [2024-01-26 15:20:46,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 245 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-26 15:20:46,125 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 141 flow [2024-01-26 15:20:46,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-01-26 15:20:46,126 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -17 predicate places. [2024-01-26 15:20:46,126 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 141 flow [2024-01-26 15:20:46,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2024-01-26 15:20:46,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:20:46,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:20:46,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-26 15:20:46,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-26 15:20:46,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:20:46,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1185311936, now seen corresponding path program 1 times [2024-01-26 15:20:46,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:20:46,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058367430] [2024-01-26 15:20:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:20:46,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:20:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:20:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:20:46,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:20:46,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058367430] [2024-01-26 15:20:46,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058367430] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:20:46,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:20:46,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:20:46,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593943880] [2024-01-26 15:20:46,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:20:46,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:20:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:20:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:20:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:20:46,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-26 15:20:46,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2024-01-26 15:20:46,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:20:46,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-26 15:20:46,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:20:46,314 INFO L124 PetriNetUnfolderBase]: 176/556 cut-off events. [2024-01-26 15:20:46,314 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-01-26 15:20:46,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 556 events. 176/556 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3225 event pairs, 6 based on Foata normal form. 48/576 useless extension candidates. Maximal degree in co-relation 570. Up to 300 conditions per place. [2024-01-26 15:20:46,317 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 27 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-01-26 15:20:46,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 212 flow [2024-01-26 15:20:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:20:46,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:20:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2024-01-26 15:20:46,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183544303797469 [2024-01-26 15:20:46,319 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 141 flow. Second operand 4 states and 227 transitions. [2024-01-26 15:20:46,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 212 flow [2024-01-26 15:20:46,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:20:46,320 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 131 flow [2024-01-26 15:20:46,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, 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=4, PETRI_FLOW=131, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-01-26 15:20:46,321 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -20 predicate places. [2024-01-26 15:20:46,321 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 131 flow [2024-01-26 15:20:46,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2024-01-26 15:20:46,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:20:46,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:20:46,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-26 15:20:46,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-26 15:20:46,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:20:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash -918864807, now seen corresponding path program 1 times [2024-01-26 15:20:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:20:46,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579776795] [2024-01-26 15:20:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:20:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:20:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:20:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:20:46,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:20:46,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579776795] [2024-01-26 15:20:46,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579776795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:20:46,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:20:46,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:20:46,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215979837] [2024-01-26 15:20:46,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:20:46,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:20:46,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:20:46,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:20:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:20:46,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-01-26 15:20:46,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2024-01-26 15:20:46,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:20:46,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-01-26 15:20:46,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:20:46,509 INFO L124 PetriNetUnfolderBase]: 176/533 cut-off events. [2024-01-26 15:20:46,509 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-01-26 15:20:46,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 533 events. 176/533 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2889 event pairs, 21 based on Foata normal form. 72/561 useless extension candidates. Maximal degree in co-relation 786. Up to 274 conditions per place. [2024-01-26 15:20:46,512 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 30 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-01-26 15:20:46,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 214 flow [2024-01-26 15:20:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:20:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:20:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2024-01-26 15:20:46,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7310126582278481 [2024-01-26 15:20:46,513 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 131 flow. Second operand 4 states and 231 transitions. [2024-01-26 15:20:46,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 214 flow [2024-01-26 15:20:46,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:20:46,516 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 124 flow [2024-01-26 15:20:46,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=124, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-01-26 15:20:46,517 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -23 predicate places. [2024-01-26 15:20:46,517 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 124 flow [2024-01-26 15:20:46,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2024-01-26 15:20:46,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:20:46,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:20:46,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-26 15:20:46,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-26 15:20:46,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:20:46,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2139309051, now seen corresponding path program 1 times [2024-01-26 15:20:46,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:20:46,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452031066] [2024-01-26 15:20:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:20:46,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:20:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:20:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:20:46,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:20:46,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452031066] [2024-01-26 15:20:46,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452031066] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:20:46,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:20:46,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:20:46,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621915860] [2024-01-26 15:20:46,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:20:46,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:20:46,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:20:46,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:20:46,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:20:46,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 79 [2024-01-26 15:20:46,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-26 15:20:46,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:20:46,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 79 [2024-01-26 15:20:46,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:20:46,751 INFO L124 PetriNetUnfolderBase]: 222/552 cut-off events. [2024-01-26 15:20:46,752 INFO L125 PetriNetUnfolderBase]: For 92/98 co-relation queries the response was YES. [2024-01-26 15:20:46,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 552 events. 222/552 cut-off events. For 92/98 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2820 event pairs, 105 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-01-26 15:20:46,754 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 29 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-01-26 15:20:46,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 213 flow [2024-01-26 15:20:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:20:46,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:20:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-01-26 15:20:46,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7637130801687764 [2024-01-26 15:20:46,756 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 124 flow. Second operand 3 states and 181 transitions. [2024-01-26 15:20:46,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 213 flow [2024-01-26 15:20:46,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:20:46,757 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 132 flow [2024-01-26 15:20:46,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-01-26 15:20:46,758 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -23 predicate places. [2024-01-26 15:20:46,758 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 132 flow [2024-01-26 15:20:46,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-26 15:20:46,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:20:46,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:20:46,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-26 15:20:46,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-26 15:20:46,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:20:46,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2074529421, now seen corresponding path program 1 times [2024-01-26 15:20:46,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:20:46,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150121685] [2024-01-26 15:20:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:20:46,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:20:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:20:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:20:46,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:20:46,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150121685] [2024-01-26 15:20:46,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150121685] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:20:46,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:20:46,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:20:46,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562774343] [2024-01-26 15:20:46,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:20:46,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:20:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:20:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:20:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:20:46,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 79 [2024-01-26 15:20:46,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-01-26 15:20:46,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:20:46,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 79 [2024-01-26 15:20:46,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:20:46,948 INFO L124 PetriNetUnfolderBase]: 268/566 cut-off events. [2024-01-26 15:20:46,949 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-01-26 15:20:46,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 566 events. 268/566 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2748 event pairs, 123 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 1091. Up to 288 conditions per place. [2024-01-26 15:20:46,951 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 29 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-01-26 15:20:46,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 231 flow [2024-01-26 15:20:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:20:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:20:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-01-26 15:20:46,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7679324894514767 [2024-01-26 15:20:46,953 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 132 flow. Second operand 3 states and 182 transitions. [2024-01-26 15:20:46,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 231 flow [2024-01-26 15:20:46,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-26 15:20:46,955 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 155 flow [2024-01-26 15:20:46,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-01-26 15:20:46,955 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -21 predicate places. [2024-01-26 15:20:46,955 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 155 flow [2024-01-26 15:20:46,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-01-26 15:20:46,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:20:46,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:20:46,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-26 15:20:46,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-26 15:20:46,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:20:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1413347911, now seen corresponding path program 1 times [2024-01-26 15:20:46,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:20:46,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925652285] [2024-01-26 15:20:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:20:46,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:20:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:20:46,966 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-26 15:20:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:20:46,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-26 15:20:46,986 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-26 15:20:46,986 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 50 remaining) [2024-01-26 15:20:46,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 50 remaining) [2024-01-26 15:20:46,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 50 remaining) [2024-01-26 15:20:46,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 50 remaining) [2024-01-26 15:20:46,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 50 remaining) [2024-01-26 15:20:46,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 50 remaining) [2024-01-26 15:20:46,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 50 remaining) [2024-01-26 15:20:46,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 50 remaining) [2024-01-26 15:20:46,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 50 remaining) [2024-01-26 15:20:46,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 50 remaining) [2024-01-26 15:20:46,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 50 remaining) [2024-01-26 15:20:46,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 50 remaining) [2024-01-26 15:20:46,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 50 remaining) [2024-01-26 15:20:46,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 50 remaining) [2024-01-26 15:20:46,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 50 remaining) [2024-01-26 15:20:46,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 50 remaining) [2024-01-26 15:20:46,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 50 remaining) [2024-01-26 15:20:46,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 50 remaining) [2024-01-26 15:20:46,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 50 remaining) [2024-01-26 15:20:46,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 50 remaining) [2024-01-26 15:20:46,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 50 remaining) [2024-01-26 15:20:46,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 50 remaining) [2024-01-26 15:20:46,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 50 remaining) [2024-01-26 15:20:46,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 50 remaining) [2024-01-26 15:20:46,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 50 remaining) [2024-01-26 15:20:46,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 50 remaining) [2024-01-26 15:20:46,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 50 remaining) [2024-01-26 15:20:46,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 50 remaining) [2024-01-26 15:20:46,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 50 remaining) [2024-01-26 15:20:46,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 50 remaining) [2024-01-26 15:20:46,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 50 remaining) [2024-01-26 15:20:46,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (18 of 50 remaining) [2024-01-26 15:20:46,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 50 remaining) [2024-01-26 15:20:46,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 50 remaining) [2024-01-26 15:20:46,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 50 remaining) [2024-01-26 15:20:46,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 50 remaining) [2024-01-26 15:20:46,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 50 remaining) [2024-01-26 15:20:46,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 50 remaining) [2024-01-26 15:20:46,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 50 remaining) [2024-01-26 15:20:46,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 50 remaining) [2024-01-26 15:20:46,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 50 remaining) [2024-01-26 15:20:46,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 50 remaining) [2024-01-26 15:20:46,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 50 remaining) [2024-01-26 15:20:46,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 50 remaining) [2024-01-26 15:20:46,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 50 remaining) [2024-01-26 15:20:46,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 50 remaining) [2024-01-26 15:20:46,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 50 remaining) [2024-01-26 15:20:46,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 50 remaining) [2024-01-26 15:20:46,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 50 remaining) [2024-01-26 15:20:46,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 50 remaining) [2024-01-26 15:20:46,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-26 15:20:46,996 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:20:47,001 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-26 15:20:47,001 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-26 15:20:47,020 INFO L503 ceAbstractionStarter]: Automizer considered 30 witness invariants [2024-01-26 15:20:47,020 INFO L504 ceAbstractionStarter]: WitnessConsidered=30 [2024-01-26 15:20:47,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 03:20:47 BasicIcfg [2024-01-26 15:20:47,021 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-26 15:20:47,022 INFO L158 Benchmark]: Toolchain (without parser) took 2912.40ms. Allocated memory was 165.7MB in the beginning and 237.0MB in the end (delta: 71.3MB). Free memory was 108.6MB in the beginning and 168.5MB in the end (delta: -59.9MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2024-01-26 15:20:47,022 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 134.2MB. Free memory was 106.1MB in the beginning and 105.8MB in the end (delta: 293.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-26 15:20:47,022 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-26 15:20:47,022 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.93ms. Allocated memory is still 165.7MB. Free memory was 108.2MB in the beginning and 92.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-01-26 15:20:47,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.45ms. Allocated memory is still 165.7MB. Free memory was 92.6MB in the beginning and 90.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-26 15:20:47,023 INFO L158 Benchmark]: Boogie Preprocessor took 67.97ms. Allocated memory is still 165.7MB. Free memory was 90.9MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-26 15:20:47,023 INFO L158 Benchmark]: RCFGBuilder took 484.60ms. Allocated memory is still 165.7MB. Free memory was 88.4MB in the beginning and 58.6MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-26 15:20:47,023 INFO L158 Benchmark]: TraceAbstraction took 2050.38ms. Allocated memory was 165.7MB in the beginning and 237.0MB in the end (delta: 71.3MB). Free memory was 57.8MB in the beginning and 168.5MB in the end (delta: -110.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-26 15:20:47,024 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 134.2MB. Free memory was 106.1MB in the beginning and 105.8MB in the end (delta: 293.7kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.93ms. Allocated memory is still 165.7MB. Free memory was 108.2MB in the beginning and 92.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.45ms. Allocated memory is still 165.7MB. Free memory was 92.6MB in the beginning and 90.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.97ms. Allocated memory is still 165.7MB. Free memory was 90.9MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 484.60ms. Allocated memory is still 165.7MB. Free memory was 88.4MB in the beginning and 58.6MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2050.38ms. Allocated memory was 165.7MB in the beginning and 237.0MB in the end (delta: 71.3MB). Free memory was 57.8MB in the beginning and 168.5MB in the end (delta: -110.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: 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, a, b; [L58] 0 pthread_t t1, t2; VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,CastExpression[ACSLType[long long],IdentifierExpression[a]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,CastExpression[ACSLType[long long],IdentifierExpression[a]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[a],IntegerLiteral[0U]]]] VAL [a=0, b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]]] [L61] 0 a = __VERIFIER_nondet_uint() [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]]] VAL [b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]]] VAL [b=0, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[0U]]]] [L62] 0 b = __VERIFIER_nondet_uint() [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_2],IntegerLiteral[0U]]]] VAL [t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x_1],IntegerLiteral[0U]]]] [L64] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [_argptr={0:0}, t1={3:0}, t2={5:0}, x_1=0, x_2=0] [L42] 1 unsigned int i=0; VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0] [L42] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] VAL [_argptr={0:0}, _argptr={0:0}, i=0, x_1=0, x_2=0] [L42] 1 CodeAnnotStmt[Assertion[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] [L42] COND TRUE 1 i