./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-more-buffer-series.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-more-buffer-series.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-958ec4d-m [2024-02-07 14:55:14,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:55:14,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:55:14,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:55:14,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:55:14,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:55:14,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:55:14,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:55:14,174 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:55:14,174 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:55:14,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:55:14,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:55:14,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:55:14,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:55:14,176 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:55:14,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:55:14,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:55:14,177 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:55:14,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:55:14,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:55:14,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:55:14,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:55:14,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:55:14,181 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:55:14,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:55:14,181 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:55:14,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:55:14,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:55:14,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:55:14,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:55:14,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:55:14,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:55:14,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:55:14,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:55:14,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:55:14,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:55:14,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:55:14,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:55:14,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:55:14,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:55:14,185 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:55:14,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:55:14,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:55:14,186 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:55:14,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:55:14,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:55:14,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:55:14,396 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:55:14,396 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:55:14,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-02-07 14:55:15,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:55:15,684 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:55:15,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-02-07 14:55:15,692 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e0d24f97/f963f08c7d304264b2780cafda12ea10/FLAGba29a2686 [2024-02-07 14:55:15,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e0d24f97/f963f08c7d304264b2780cafda12ea10 [2024-02-07 14:55:15,713 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:55:15,714 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:55:15,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-more-buffer-series.wvr.yml/witness.yml [2024-02-07 14:55:15,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:55:15,791 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:55:15,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:55:15,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:55:15,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:55:15,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:55:15" (1/2) ... [2024-02-07 14:55:15,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39577cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:55:15, skipping insertion in model container [2024-02-07 14:55:15,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:55:15" (1/2) ... [2024-02-07 14:55:15,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@64edad42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:55:15, skipping insertion in model container [2024-02-07 14:55:15,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:55:15" (2/2) ... [2024-02-07 14:55:15,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39577cd0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:15, skipping insertion in model container [2024-02-07 14:55:15,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:55:15" (2/2) ... [2024-02-07 14:55:15,801 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:55:15,831 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:55:15,834 INFO L76 edCorrectnessWitness]: Location invariant before [L112-L112] 0 <= j [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L80-L80] -2147483647 <= q2_back [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant after [L71-L71] 0 <= j [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L98-L98] (-2147483647 <= q1_back) && (q1_front <= 2147483646) [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L116-L116] (-2147483647 <= q2_back) && (q2_front <= 2147483646) [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L101-L101] -2147483647 <= q1_front [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant after [L112-L112] 0 <= j [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L53-L53] 0 <= q1_back [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L83-L83] 1 <= j [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L121-L121] 0 <= j [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L173-L173] (1 <= b) && (b != 0) [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L49-L49] 0 <= i [2024-02-07 14:55:15,835 INFO L76 edCorrectnessWitness]: Location invariant before [L166-L166] ((((((((8 <= i && i <= 2147483646) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L82-L82] 0 <= j [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L71-L71] 0 <= j [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L94-L94] 0 <= i [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L57-L57] -2147483647 <= q1_back [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L76-L76] 0 <= j [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L60-L60] 1 <= i [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L59-L59] 0 <= i [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L172-L172] (b <= -1) && (b != 0) [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L54-L54] 0 <= i [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L85-L85] 0 <= j [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L62-L62] 0 <= i [2024-02-07 14:55:15,836 INFO L76 edCorrectnessWitness]: Location invariant before [L75-L75] 0 <= q2_back [2024-02-07 14:55:15,837 INFO L76 edCorrectnessWitness]: Location invariant after [L49-L49] 0 <= i [2024-02-07 14:55:15,837 INFO L76 edCorrectnessWitness]: Location invariant before [L77-L77] 0 <= j [2024-02-07 14:55:15,837 INFO L76 edCorrectnessWitness]: Location invariant before [L103-L103] 0 <= i [2024-02-07 14:55:15,837 INFO L76 edCorrectnessWitness]: Location invariant after [L94-L94] 0 <= i [2024-02-07 14:55:15,837 INFO L76 edCorrectnessWitness]: Location invariant before [L119-L119] -2147483647 <= q2_front [2024-02-07 14:55:15,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:55:16,011 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2024-02-07 14:55:16,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:55:16,031 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:55:16,041 WARN L423 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-07 14:55:16,041 WARN L423 MainDispatcher]: Unable to annotate cond = i < N with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:55:16,062 WARN L423 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-07 14:55:16,063 WARN L423 MainDispatcher]: Unable to annotate cond = j < N with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:55:16,081 WARN L423 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-07 14:55:16,084 WARN L423 MainDispatcher]: Unable to annotate cond = i < N || q1_front < q1_back with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:55:16,090 WARN L423 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-07 14:55:16,091 WARN L423 MainDispatcher]: Unable to annotate cond = j < N || q2_front < q2_back with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:55:16,096 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4403,4416] Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:55:16,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:55:16,115 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:55:16,115 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16 WrapperNode [2024-02-07 14:55:16,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:55:16,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:55:16,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:55:16,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:55:16,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,160 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 390 [2024-02-07 14:55:16,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:55:16,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:55:16,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:55:16,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:55:16,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,178 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,200 INFO L175 MemorySlicer]: Split 20 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 10]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 1, 3]. [2024-02-07 14:55:16,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:55:16,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:55:16,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:55:16,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:55:16,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (1/1) ... [2024-02-07 14:55:16,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:55:16,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:55:16,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:55:16,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:55:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:55:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:55:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:55:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:55:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:55:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:55:16,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:55:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:55:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:55:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:55:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:55:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:55:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:55:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:55:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:55:16,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:55:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:55:16,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:55:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 14:55:16,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 14:55:16,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-07 14:55:16,303 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-07 14:55:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:55:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:55:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:55:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:55:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:55:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:55:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:55:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:55:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 14:55:16,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:55:16,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:55:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:55:16,306 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:55:16,431 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:55:16,432 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:55:16,957 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:55:16,957 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:55:17,255 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:55:17,255 INFO L320 CfgBuilder]: Removed 7 assume(true) statements. [2024-02-07 14:55:17,255 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:55:17 BoogieIcfgContainer [2024-02-07 14:55:17,255 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:55:17,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:55:17,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:55:17,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:55:17,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:55:15" (1/4) ... [2024-02-07 14:55:17,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebd3bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:55:17, skipping insertion in model container [2024-02-07 14:55:17,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:55:15" (2/4) ... [2024-02-07 14:55:17,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebd3bec and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:55:17, skipping insertion in model container [2024-02-07 14:55:17,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:55:16" (3/4) ... [2024-02-07 14:55:17,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebd3bec and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:55:17, skipping insertion in model container [2024-02-07 14:55:17,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:55:17" (4/4) ... [2024-02-07 14:55:17,262 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-02-07 14:55:17,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:55:17,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2024-02-07 14:55:17,277 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:55:17,328 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 14:55:17,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2024-02-07 14:55:17,377 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2024-02-07 14:55:17,377 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 14:55:17,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 7/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 242 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-02-07 14:55:17,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2024-02-07 14:55:17,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 79 transitions, 182 flow [2024-02-07 14:55:17,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:55:17,399 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;@2f8d6a65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:55:17,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2024-02-07 14:55:17,402 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:55:17,403 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-02-07 14:55:17,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:55:17,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:55:17,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:55:17,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-02-07 14:55:17,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1143405, now seen corresponding path program 1 times [2024-02-07 14:55:17,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:17,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203210127] [2024-02-07 14:55:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:17,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:55:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:17,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:55:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203210127] [2024-02-07 14:55:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203210127] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:55:17,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:55:17,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:55:17,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469206215] [2024-02-07 14:55:17,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:55:17,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:55:17,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:55:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:55:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:55:17,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 84 [2024-02-07 14:55:17,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:17,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:55:17,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 84 [2024-02-07 14:55:17,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:55:19,934 INFO L124 PetriNetUnfolderBase]: 19904/26824 cut-off events. [2024-02-07 14:55:19,935 INFO L125 PetriNetUnfolderBase]: For 696/696 co-relation queries the response was YES. [2024-02-07 14:55:19,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53538 conditions, 26824 events. 19904/26824 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 2273. Compared 182858 event pairs, 15244 based on Foata normal form. 0/14404 useless extension candidates. Maximal degree in co-relation 49393. Up to 25456 conditions per place. [2024-02-07 14:55:20,105 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 49 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-02-07 14:55:20,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 280 flow [2024-02-07 14:55:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:55:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:55:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-02-07 14:55:20,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-02-07 14:55:20,129 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 182 flow. Second operand 3 states and 128 transitions. [2024-02-07 14:55:20,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 280 flow [2024-02-07 14:55:20,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 72 transitions, 264 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-07 14:55:20,266 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 198 flow [2024-02-07 14:55:20,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-02-07 14:55:20,270 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -15 predicate places. [2024-02-07 14:55:20,271 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 198 flow [2024-02-07 14:55:20,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:20,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:55:20,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-02-07 14:55:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:55:20,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-02-07 14:55:20,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1098849499, now seen corresponding path program 1 times [2024-02-07 14:55:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:20,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305469945] [2024-02-07 14:55:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:20,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:55:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:20,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:55:20,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305469945] [2024-02-07 14:55:20,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305469945] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:55:20,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817564068] [2024-02-07 14:55:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:20,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:20,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:55:20,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:55:20,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:55:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:55:20,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 14:55:20,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:55:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:20,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:55:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:20,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817564068] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:55:20,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:55:20,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-02-07 14:55:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189792511] [2024-02-07 14:55:20,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:55:20,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:55:20,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:55:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:55:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:55:20,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 84 [2024-02-07 14:55:20,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:20,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:55:20,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 84 [2024-02-07 14:55:20,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:55:22,647 INFO L124 PetriNetUnfolderBase]: 19907/26833 cut-off events. [2024-02-07 14:55:22,647 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-02-07 14:55:22,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52830 conditions, 26833 events. 19907/26833 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 2273. Compared 183316 event pairs, 15244 based on Foata normal form. 0/14413 useless extension candidates. Maximal degree in co-relation 52742. Up to 25457 conditions per place. [2024-02-07 14:55:22,868 INFO L140 encePairwiseOnDemand]: 74/84 looper letters, 49 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-02-07 14:55:22,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 350 flow [2024-02-07 14:55:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:55:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:55:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-02-07 14:55:22,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-02-07 14:55:22,873 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 198 flow. Second operand 4 states and 145 transitions. [2024-02-07 14:55:22,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 350 flow [2024-02-07 14:55:22,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 78 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:55:22,877 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 257 flow [2024-02-07 14:55:22,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2024-02-07 14:55:22,879 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -13 predicate places. [2024-02-07 14:55:22,880 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 257 flow [2024-02-07 14:55:22,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:22,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:55:22,880 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1] [2024-02-07 14:55:22,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:55:23,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:23,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-02-07 14:55:23,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash -567548983, now seen corresponding path program 2 times [2024-02-07 14:55:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:23,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500033323] [2024-02-07 14:55:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:23,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:55:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:23,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:55:23,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500033323] [2024-02-07 14:55:23,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500033323] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:55:23,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346110658] [2024-02-07 14:55:23,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:55:23,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:23,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:55:23,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:55:23,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 14:55:23,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:55:23,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:55:23,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 14:55:23,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:55:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:23,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:55:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:23,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346110658] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:55:23,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:55:23,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:55:23,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067826985] [2024-02-07 14:55:23,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:55:23,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:55:23,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:55:23,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:55:23,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:55:23,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 84 [2024-02-07 14:55:23,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:23,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:55:23,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 84 [2024-02-07 14:55:23,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:55:25,168 INFO L124 PetriNetUnfolderBase]: 19910/26842 cut-off events. [2024-02-07 14:55:25,169 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2024-02-07 14:55:25,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52875 conditions, 26842 events. 19910/26842 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 2273. Compared 183470 event pairs, 15244 based on Foata normal form. 0/14422 useless extension candidates. Maximal degree in co-relation 52759. Up to 25458 conditions per place. [2024-02-07 14:55:25,306 INFO L140 encePairwiseOnDemand]: 74/84 looper letters, 49 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-02-07 14:55:25,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 84 transitions, 429 flow [2024-02-07 14:55:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:55:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:55:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-02-07 14:55:25,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-02-07 14:55:25,308 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 257 flow. Second operand 5 states and 171 transitions. [2024-02-07 14:55:25,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 84 transitions, 429 flow [2024-02-07 14:55:25,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 410 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-02-07 14:55:25,310 INFO L231 Difference]: Finished difference. Result has 76 places, 84 transitions, 335 flow [2024-02-07 14:55:25,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=76, PETRI_TRANSITIONS=84} [2024-02-07 14:55:25,311 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -9 predicate places. [2024-02-07 14:55:25,311 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 84 transitions, 335 flow [2024-02-07 14:55:25,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:25,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:55:25,312 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1] [2024-02-07 14:55:25,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 14:55:25,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-02-07 14:55:25,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-02-07 14:55:25,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash 46311223, now seen corresponding path program 3 times [2024-02-07 14:55:25,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:25,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892612868] [2024-02-07 14:55:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:25,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:55:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:25,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:55:25,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892612868] [2024-02-07 14:55:25,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892612868] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:55:25,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846459241] [2024-02-07 14:55:25,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 14:55:25,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:25,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:55:25,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:55:25,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 14:55:25,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-07 14:55:25,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:55:25,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-07 14:55:25,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:55:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-07 14:55:25,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:55:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-07 14:55:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846459241] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:55:26,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:55:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 9 [2024-02-07 14:55:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031713370] [2024-02-07 14:55:26,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:55:26,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-07 14:55:26,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:55:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-07 14:55:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-07 14:55:26,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 84 [2024-02-07 14:55:26,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 84 transitions, 335 flow. Second operand has 11 states, 11 states have (on average 18.636363636363637) internal successors, (205), 11 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) [2024-02-07 14:55:26,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:55:26,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 84 [2024-02-07 14:55:26,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:55:27,880 INFO L124 PetriNetUnfolderBase]: 19916/26858 cut-off events. [2024-02-07 14:55:27,880 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-02-07 14:55:27,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52968 conditions, 26858 events. 19916/26858 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 2273. Compared 183328 event pairs, 15244 based on Foata normal form. 0/14439 useless extension candidates. Maximal degree in co-relation 52799. Up to 25459 conditions per place. [2024-02-07 14:55:28,007 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 63 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2024-02-07 14:55:28,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 109 transitions, 633 flow [2024-02-07 14:55:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-07 14:55:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-07 14:55:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 323 transitions. [2024-02-07 14:55:28,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2957875457875458 [2024-02-07 14:55:28,009 INFO L175 Difference]: Start difference. First operand has 76 places, 84 transitions, 335 flow. Second operand 13 states and 323 transitions. [2024-02-07 14:55:28,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 109 transitions, 633 flow [2024-02-07 14:55:28,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 109 transitions, 579 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-02-07 14:55:28,012 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 456 flow [2024-02-07 14:55:28,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=456, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2024-02-07 14:55:28,012 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2024-02-07 14:55:28,013 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 456 flow [2024-02-07 14:55:28,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.636363636363637) internal successors, (205), 11 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) [2024-02-07 14:55:28,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:55:28,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:55:28,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 14:55:28,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:28,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-02-07 14:55:28,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash 445011512, now seen corresponding path program 1 times [2024-02-07 14:55:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:28,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452279990] [2024-02-07 14:55:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:28,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:55:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:28,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:55:28,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452279990] [2024-02-07 14:55:28,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452279990] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:55:28,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:55:28,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:55:28,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70334599] [2024-02-07 14:55:28,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:55:28,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:55:28,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:55:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:55:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:55:28,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 84 [2024-02-07 14:55:28,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 456 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:28,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:55:28,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 84 [2024-02-07 14:55:28,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:55:31,468 INFO L124 PetriNetUnfolderBase]: 37345/50196 cut-off events. [2024-02-07 14:55:31,468 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2024-02-07 14:55:31,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100312 conditions, 50196 events. 37345/50196 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 3792. Compared 359774 event pairs, 14677 based on Foata normal form. 0/29359 useless extension candidates. Maximal degree in co-relation 100239. Up to 24360 conditions per place. [2024-02-07 14:55:31,900 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 162 selfloop transitions, 11 changer transitions 0/188 dead transitions. [2024-02-07 14:55:31,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 188 transitions, 1006 flow [2024-02-07 14:55:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:55:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:55:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2024-02-07 14:55:31,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5099206349206349 [2024-02-07 14:55:31,918 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 456 flow. Second operand 6 states and 257 transitions. [2024-02-07 14:55:31,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 188 transitions, 1006 flow [2024-02-07 14:55:31,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 188 transitions, 925 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-02-07 14:55:31,925 INFO L231 Difference]: Finished difference. Result has 92 places, 97 transitions, 423 flow [2024-02-07 14:55:31,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=423, PETRI_PLACES=92, PETRI_TRANSITIONS=97} [2024-02-07 14:55:31,927 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 7 predicate places. [2024-02-07 14:55:31,928 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 97 transitions, 423 flow [2024-02-07 14:55:31,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:31,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:55:31,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:55:31,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:55:31,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-02-07 14:55:31,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:31,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1159899391, now seen corresponding path program 1 times [2024-02-07 14:55:31,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:31,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459980539] [2024-02-07 14:55:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:31,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:55:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:55:32,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:55:32,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459980539] [2024-02-07 14:55:32,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459980539] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:55:32,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:55:32,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:55:32,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831809250] [2024-02-07 14:55:32,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:55:32,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:55:32,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:55:32,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:55:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:55:32,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 84 [2024-02-07 14:55:32,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 97 transitions, 423 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:32,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:55:32,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 84 [2024-02-07 14:55:32,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:55:36,091 INFO L124 PetriNetUnfolderBase]: 39197/53872 cut-off events. [2024-02-07 14:55:36,092 INFO L125 PetriNetUnfolderBase]: For 3382/3382 co-relation queries the response was YES. [2024-02-07 14:55:36,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112582 conditions, 53872 events. 39197/53872 cut-off events. For 3382/3382 co-relation queries the response was YES. Maximal size of possible extension queue 4210. Compared 414108 event pairs, 14718 based on Foata normal form. 0/33416 useless extension candidates. Maximal degree in co-relation 112515. Up to 31277 conditions per place. [2024-02-07 14:55:36,451 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 148 selfloop transitions, 11 changer transitions 0/175 dead transitions. [2024-02-07 14:55:36,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 175 transitions, 923 flow [2024-02-07 14:55:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:55:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:55:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-02-07 14:55:36,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781746031746032 [2024-02-07 14:55:36,452 INFO L175 Difference]: Start difference. First operand has 92 places, 97 transitions, 423 flow. Second operand 6 states and 241 transitions. [2024-02-07 14:55:36,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 175 transitions, 923 flow [2024-02-07 14:55:36,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 175 transitions, 920 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:55:36,461 INFO L231 Difference]: Finished difference. Result has 99 places, 99 transitions, 469 flow [2024-02-07 14:55:36,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=99, PETRI_TRANSITIONS=99} [2024-02-07 14:55:36,462 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2024-02-07 14:55:36,462 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 99 transitions, 469 flow [2024-02-07 14:55:36,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:36,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:55:36,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:55:36,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:55:36,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-02-07 14:55:36,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 508632916, now seen corresponding path program 1 times [2024-02-07 14:55:36,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:36,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044710809] [2024-02-07 14:55:36,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:55:36,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:55:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:55:36,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:55:36,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:55:36,510 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 54 remaining) [2024-02-07 14:55:36,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 54 remaining) [2024-02-07 14:55:36,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 54 remaining) [2024-02-07 14:55:36,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 54 remaining) [2024-02-07 14:55:36,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 54 remaining) [2024-02-07 14:55:36,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 54 remaining) [2024-02-07 14:55:36,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 54 remaining) [2024-02-07 14:55:36,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 54 remaining) [2024-02-07 14:55:36,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 54 remaining) [2024-02-07 14:55:36,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 54 remaining) [2024-02-07 14:55:36,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 54 remaining) [2024-02-07 14:55:36,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 54 remaining) [2024-02-07 14:55:36,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 54 remaining) [2024-02-07 14:55:36,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 54 remaining) [2024-02-07 14:55:36,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 54 remaining) [2024-02-07 14:55:36,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 54 remaining) [2024-02-07 14:55:36,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 54 remaining) [2024-02-07 14:55:36,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 54 remaining) [2024-02-07 14:55:36,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 54 remaining) [2024-02-07 14:55:36,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 54 remaining) [2024-02-07 14:55:36,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 54 remaining) [2024-02-07 14:55:36,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 54 remaining) [2024-02-07 14:55:36,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (31 of 54 remaining) [2024-02-07 14:55:36,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 54 remaining) [2024-02-07 14:55:36,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 54 remaining) [2024-02-07 14:55:36,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 54 remaining) [2024-02-07 14:55:36,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 54 remaining) [2024-02-07 14:55:36,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 54 remaining) [2024-02-07 14:55:36,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 54 remaining) [2024-02-07 14:55:36,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 54 remaining) [2024-02-07 14:55:36,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 54 remaining) [2024-02-07 14:55:36,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err4ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 54 remaining) [2024-02-07 14:55:36,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 54 remaining) [2024-02-07 14:55:36,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 54 remaining) [2024-02-07 14:55:36,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 54 remaining) [2024-02-07 14:55:36,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 54 remaining) [2024-02-07 14:55:36,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 54 remaining) [2024-02-07 14:55:36,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 54 remaining) [2024-02-07 14:55:36,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 54 remaining) [2024-02-07 14:55:36,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 54 remaining) [2024-02-07 14:55:36,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 54 remaining) [2024-02-07 14:55:36,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 54 remaining) [2024-02-07 14:55:36,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 54 remaining) [2024-02-07 14:55:36,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 54 remaining) [2024-02-07 14:55:36,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 54 remaining) [2024-02-07 14:55:36,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 54 remaining) [2024-02-07 14:55:36,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 54 remaining) [2024-02-07 14:55:36,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 54 remaining) [2024-02-07 14:55:36,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 54 remaining) [2024-02-07 14:55:36,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 54 remaining) [2024-02-07 14:55:36,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 54 remaining) [2024-02-07 14:55:36,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 54 remaining) [2024-02-07 14:55:36,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 54 remaining) [2024-02-07 14:55:36,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 54 remaining) [2024-02-07 14:55:36,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:55:36,520 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2024-02-07 14:55:36,525 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:55:36,525 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:55:36,553 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:55:36,554 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:55:36,555 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:55:36,566 INFO L503 ceAbstractionStarter]: Automizer considered 26 witness invariants [2024-02-07 14:55:36,566 INFO L504 ceAbstractionStarter]: WitnessConsidered=26 [2024-02-07 14:55:36,567 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:55:36 BasicIcfg [2024-02-07 14:55:36,567 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:55:36,569 INFO L158 Benchmark]: Toolchain (without parser) took 20777.82ms. Allocated memory was 157.3MB in the beginning and 9.7GB in the end (delta: 9.5GB). Free memory was 125.8MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-02-07 14:55:36,569 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 91.3MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:55:36,569 INFO L158 Benchmark]: Witness Parser took 0.07ms. Allocated memory is still 157.3MB. Free memory is still 129.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:55:36,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.35ms. Allocated memory is still 157.3MB. Free memory was 125.8MB in the beginning and 106.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-02-07 14:55:36,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.15ms. Allocated memory is still 157.3MB. Free memory was 106.1MB in the beginning and 103.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:55:36,572 INFO L158 Benchmark]: Boogie Preprocessor took 76.83ms. Allocated memory is still 157.3MB. Free memory was 103.3MB in the beginning and 99.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:55:36,572 INFO L158 Benchmark]: RCFGBuilder took 1017.52ms. Allocated memory is still 157.3MB. Free memory was 99.2MB in the beginning and 91.3MB in the end (delta: 7.9MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2024-02-07 14:55:36,573 INFO L158 Benchmark]: TraceAbstraction took 19310.45ms. Allocated memory was 157.3MB in the beginning and 9.7GB in the end (delta: 9.5GB). Free memory was 90.2MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-02-07 14:55:36,574 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 91.3MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.07ms. Allocated memory is still 157.3MB. Free memory is still 129.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.35ms. Allocated memory is still 157.3MB. Free memory was 125.8MB in the beginning and 106.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.15ms. Allocated memory is still 157.3MB. Free memory was 106.1MB in the beginning and 103.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.83ms. Allocated memory is still 157.3MB. Free memory was 103.3MB in the beginning and 99.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1017.52ms. Allocated memory is still 157.3MB. Free memory was 99.2MB in the beginning and 91.3MB in the end (delta: 7.9MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. * TraceAbstraction took 19310.45ms. Allocated memory was 157.3MB in the beginning and 9.7GB in the end (delta: 9.5GB). Free memory was 90.2MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 53]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L41] 0 int *q1, *q2, *f; [L42] 0 int q1_front, q1_back, q2_front, q2_back, i, j, n1, n2, N, total; [L129] 0 pthread_t t1, t2, t3, t4; [L131] 0 N = __VERIFIER_nondet_int() [L132] 0 n1 = __VERIFIER_nondet_int() [L133] 0 n2 = __VERIFIER_nondet_int() [L134] 0 q1_front = __VERIFIER_nondet_int() [L135] 0 q1_back = q1_front [L136] 0 q2_front = __VERIFIER_nondet_int() [L137] 0 q2_back = q2_front [L138] CALL, EXPR 0 create_fresh_int_array(n1) [L161] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L161] RET 0 assume_abort_if_not(size >= 0) [L162] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L162] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L164] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L165] 0 int i = 0; VAL [N=1, \old(size)=0, arr={-3:0}, f={0:0}, i=0, i=0, j=0, n1=0, n2=0, q1={0:0}, q1_back=-1, q1_front=-1, q2={0:0}, q2_back=-2, q2_front=-2, size=0, total=0] [L165] COND FALSE 0 !(i < size) [L168] 0 return arr; [L138] RET, EXPR 0 create_fresh_int_array(n1) [L138] 0 q1 = create_fresh_int_array(n1) [L139] CALL, EXPR 0 create_fresh_int_array(n2) [L161] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L161] RET 0 assume_abort_if_not(size >= 0) [L162] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L162] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L164] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L165] 0 int i = 0; VAL [N=1, \old(size)=0, arr={-4:0}, f={0:0}, i=0, i=0, j=0, n1=0, n2=0, q1={-3:0}, q1_back=-1, q1_front=-1, q2={0:0}, q2_back=-2, q2_front=-2, size=0, total=0] [L165] COND FALSE 0 !(i < size) [L168] 0 return arr; [L139] RET, EXPR 0 create_fresh_int_array(n2) [L139] 0 q2 = create_fresh_int_array(n2) [L140] CALL, EXPR 0 create_fresh_int_array(N) [L161] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L161] RET 0 assume_abort_if_not(size >= 0) [L162] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L162] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L164] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L165] 0 int i = 0; VAL [N=1, \old(size)=1, arr={-5:0}, f={0:0}, i=0, i=0, j=0, n1=0, n2=0, q1={-3:0}, q1_back=-1, q1_front=-1, q2={-4:0}, q2_back=-2, q2_front=-2, size=1, total=0] [L165] COND TRUE 0 i < size VAL [N=1, \old(size)=1, arr={-5:0}, f={0:0}, i=0, i=0, j=0, n1=0, n2=0, q1={-3:0}, q1_back=-1, q1_front=-1, q2={-4:0}, q2_back=-2, q2_front=-2, size=1, total=0] [L166] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[8],IdentifierExpression[i]],BinaryExpression[COMPLEQ,IdentifierExpression[i],IntegerLiteral[2147483646]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[7]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[6]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[5]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[4]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[3]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[2]]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[1]]],BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IntegerLiteral[0],IdentifierExpression[i]],BinaryExpression[COMPEQ,IdentifierExpression[i],IntegerLiteral[0]]]]]] [L166] 0 arr[i] = __VERIFIER_nondet_int() [L165] 0 i++ VAL [N=1, \old(size)=1, arr={-5:0}, f={0:0}, i=0, i=1, j=0, n1=0, n2=0, q1={-3:0}, q1_back=-1, q1_front=-1, q2={-4:0}, q2_back=-2, q2_front=-2, size=1, total=0] [L165] COND FALSE 0 !(i < size) [L168] 0 return arr; [L140] RET, EXPR 0 create_fresh_int_array(N) [L140] 0 f = create_fresh_int_array(N) [L142] CALL 0 assume_abort_if_not(N >= 0) [L38] COND FALSE 0 !(!cond) [L142] RET 0 assume_abort_if_not(N >= 0) [L145] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [N=1, f={-5:0}, i=0, j=0, n1=0, n2=0, q1={-3:0}, q1_back=-1, q1_front=-1, q2={-4:0}, q2_back=-2, q2_front=-2, t1={3:0}, t2={7:0}, t3={6:0}, t4={5:0}, total=0] [L49] 1 _Bool cond = i < N; VAL [N=1, _argptr={0:0}, _argptr={0:0}, cond=1, f={-5:0}, i=0, j=0, n1=0, n2=0, q1={-3:0}, q1_back=-1, q1_front=-1, q2={-4:0}, q2_back=-2, q2_front=-2, total=0] [L51] COND TRUE 1 \read(cond) VAL [N=1, _argptr={0:0}, _argptr={0:0}, cond=1, f={-5:0}, i=0, j=0, n1=0, n2=0, q1={-3:0}, q1_back=-1, q1_front=-1, q2={-4:0}, q2_back=-2, q2_front=-2, total=0] [L53] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[q1_back]]]] VAL [N=1, _argptr={0:0}, _argptr={0:0}, cond=1, f={-5:0}, i=0, j=0, n1=0, n2=0, q1={-3:0}, q1_back=-1, q1_front=-1, q2={-4:0}, q2_back=-2, q2_front=-2, total=0] - UnprovableResult [Line: 54]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 83]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 85]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 98]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 173]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 101]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 103]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 166]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 166]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 166]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 155]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 148]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 146]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 145]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 173]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 121]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 131 locations, 54 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.2s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 454 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 393 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1623 IncrementalHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 21 mSDtfsCounter, 1623 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=469occurred in iteration=6, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 76 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 359 SizeOfPredicates, 4 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 15/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-07 14:55:36,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE